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Solid-State Relays
Features
Rugged, epoxy encapsulation construction
4,000 volts of optical isolation
Subjected to full load test and six times the rated
current surge before and after encapsulation
Unique heat-spreader technology
UL and CSA recognized
Opto 22 Power
Series SSR
Overview
In 1974, Opto 22 introduced the first liquid epoxy-filled line of
power solid-state relays (SSR). This innovation in SSR design greatly
improved the reliability and reduced the cost of manufacturing. At
that time, we also incorporated into our manufacturing process
100% testing under full load conditions of every relay we produced.
By 1978, Opto 22 had gained such a reputation for reliability that
we were recognized as the world’s leading manufacturer of solidstate relays. Through continuous manufacturing improvements and
the same 100% testing policy established over 30 years ago,
Opto 22 is still recognized today for the very high quality and
reliability of all our solid-state relays.
Opto 22 offers a complete line of SSRs, from the rugged 120/240/
380-volt AC Series to the small footprint MP Series, designed for
mounting on printed circuit boards. All Opto 22 SSRs feature 4,000
volts of optical isolation and are UL and CSA recognized. The
innovative use of room-temperature liquid epoxy encapsulation,
coupled with Opto 22’s unique heat-spreader technology, are key to
mass producing the world’s most reliable solid state relays.
Every Opto 22 solid state relay is subjected to full load test and six
times the rated current surge both before and after encapsulation.
This double testing of every part before it leaves the factory means
you can rely on Opto 22 solid state relays. All Opto 22 SSRs are
guaranteed for life.
Solid-State Relays
Description
Part Numbers
Part
Description
Part
Description
480 VAC, 45 Amp, DC Control, Transient Proof
575D15-12
575 VAC, 15 Amp, DC Control, Transient Proof
240 VAC, 45 Amp, AC Control
575D30-HS
575 VAC, 30 Amp, DC Control, Transient Proof, with
integrated heatsink
120D3
120 VAC, 3 Amp, DC Control
575D45-12
575 VAC, 45 Amp, DC Control, Transient Proof
120D10
120 VAC, 10 Amp, DC Control
120D25
120 VAC, 25 Amp, DC Control
575Di45-12
575 VAC, 45 Amp, DC Control, Transient Proof, with
LED Indicators
120D45
120 VAC, 45 Amp, DC Control
240D3
240 VAC, 3 Amp, DC Control
DC60P or
DC60MP
60 VDC, 3 Amp, DC Control.
P model is low profile.
240D10
240 VAC, 10 Amp, DC Control
240Di10
240 VAC, 10 Amp, DC Control, with LED Indicators
DC200P or
DC200MP
200 VDC, 1 Amp, DC Control.
P model is low profile.
240D25
240 VAC, 25 Amp, DC Control
DC60S-3
60 VDC, 3 Amp, DC Control
240Di25
240 VAC, 25 Amp, DC Control, with LED Indicators
DC60S-5
60 VDC, 5 Amp, DC Control
240D30-HS
240 VAC, 30 Amp, DC Control, with integrated heatsink
MP120D2
or P120D2
120 VAC, 2 Amp, DC Control.
P model is low profile.
240D45
240 VAC, 45 Amp, DC Control
MP120D4
or P120D4
120 VAC, 4 Amp, DC Control.
P model is low profile.
240Di45
240 VAC, 45 Amp, DC Control, with LED Indicators
380D25
380 VAC, 25 Amp, DC Control
MP240D2
or P240D2
240 VAC, 2 Amp, DC.
P model is low profile.
380D45
380 VAC, 45 Amp, DC Control
480D10-12
480 VAC, 10 Amp, DC Control, Transient Proof
MP240D4
or P240D4
240 VAC, 4 Amp, DC.
P model is low profile.
480D15-12
480 VAC, 15 Amp, DC Control, Transient Proof
MP380D4
380 VAC, 4 Amp, DC
Z120D10
Z Model, 120 VAC, 10 Amp, DC Control
Z240D10
Z Model, 240 VAC, 10 Amp, DC Control
120A25
120 VAC, 25 Amp, AC Control
240A10
240 VAC, 10 Amp, AC Control
240A25
240 VAC, 25 Amp, AC Control
240A45
480D25-12
480 VAC, 25 Amp, DC Control, Transient Proof
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
480D45-12
120 VAC, 10 Amp, AC Control
Form 0859-100305
480D25-HS
480 VAC, 25 Amp, DC Control, Transient Proof, with
integrated heatsink
120A10
PAGE
1
Solid-State Relays
Solid-State Relays
Power Series SSRs
Opto 22 provides a full range of Power
Series relays with a wide variety of
voltage (120–575 volts) and current
options (3–45 amps). All Power Series
relays feature 4,000 volts of optical
isolation and have a high PRV rating.
Some Power Series relays include
built-in LEDs to indicate operation.
See page 3.
Printed Circuit Series SSRs
Opto 22’s Printed Circuit Series allows
OEMs to easily deploy solid state
relays on printed circuit boards. Two
unique packages are available, both
of which will switch loads up to four
amps. Operating temperature: –40 °C
to 100 °C. See page 9.
MP Series
DC Series
The DC Series delivers isolated DC control to large OEM customers
worldwide.
The MP Series packaging is designed with a minimum footprint to
allow maximum relay density on the printed circuit board.
P Series
AC Series
The AC Series offers the ultimate in solid state reliability. All AC
Power Series relays feature a built-in snubber and zero voltage turn
on. Transient-proof models offer self protection for noisy electrical
environments.
Z Series SSRs
The P Series power relays provide low-profile [0.5 in. (12.7 mm)]
center mounting on printed circuit boards.
HS Series SSRs
The HS Series features an integrated
heatsink, which makes them so cool.
These relays have less thermal resistance
inside, so heat dissipates more easily
than in a standard SSR mounted to the
same heatsink. With the heatsink builtin, you don't have to select one from a
catalog, and installation is much
easier. See page 14.
Form 0859-100305
The Z Series employs a unique heat
transfer system that makes it possible
for Opto 22 to deliver a low-cost, 10amp, solid state relay in an all-plastic
case. The push-on, tool-free quickconnect terminals make the Z Series
DATA SHEET
ideal for high-volume OEM applications. Operating temperature: –
40 °C to 100 °C. See page 7.
PAGE
2
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Specifications
(all Power Series models)
•
•
•
•
•
•
•
•
4,000 V optical isolation, input to output
Zero voltage turn-on
Turn-on time: 0.5 cycle maximum
Turn-off time: 0.5 cycle maximum
Operating temperature: –40 °C to 100 °C
Operating frequency: 25 to 65 Hz
(operates at 400 Hz with six times off-state leakage)
Coupling capacitance, input to output: 8 pF maximum
Hermetically sealed
DV/DT Off-state: 200 volts per microsecond
DV/DT commutating: snubbed for rated current at
0.5 power factor
UL recognized
CSA certified
CE component
Torque specs for screws: Control terminals, 6 in/lb
Field terminals, 18 in/lb
A plastic safety cover (Opto 22 part number SAFETY COVER) is
optionally available for Opto 22 Power Series SSRs. The safety cover
reduces the chance of accidental contact with relay terminals, while
providing access holes for test instrumentation.
Solid-State Relays
•
•
•
•
•
•
Safety Cover for Power Series SSRs
An optional plastic safety cover can be installed on a Power Series SSR.
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
3
Solid-State Relays
AC Power Series Specifications
Opto 22 provides a full range of Power Series relays with a wide variety of voltage (120–575) and current options (3–45 amps). All Power
Series relays feature 4,000 volts of optical isolation and have a high PRV rating. Operating temperature is –40 °C to 100 °C.
Solid-State Relays
120/240/380 Volt
Model Nominal Nominal 1 cycle
Nominal
Number AC Line Current Surge Signal Input
Voltage Rating (Amps) Resistance
(Amps)
Peak
(Ohms)
Signal
Pick-up
Voltage
Signal
Peak
Maximum Off-State Operating
I2t
Drop-out Repetitive
Output
Leakage
Voltage Rating
Voltage
Voltage
Voltage
(mA)
Range
t=8.3
Maximum
Drop
Maximum** (Volts AC) (ms)
Isolation
Voltage
θjc* Dissipation
(Watts/
(°C/Watt)
Amp)
120D3
120
3
85
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
2.5mA
12–140
30
4,000VRMS
11
1.7
120D10
120
10
110
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
7 mA
12–140
50
4,000VRMS
1.3
1.6
120D25
120
25
250
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
7 mA
12–140
250
4,000VRMS
1.2
1.3
120D45
120
45
650
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
7 mA
12–140
1750
4,000VRMS
0.67
0.9
240D3
240
3
85
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
5 mA
24–280
30
4,000VRMS
11
1.7
240D10
240
10
110
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
24–280
50
4,000VRMS
1.3
1.6
240Di10
240
10
110
730
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
24–280
50
4,000VRMS
1.3
1.6
240D25
240
25
250
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
24–280
250
4,000VRMS
1.2
1.3
240Di25
240
25
250
730
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
12–280
250
4,000VRMS
1.2
1.3
240D45
240
45
650
1000
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
24–280
1750
4,000VRMS
0.67
0.9
240Di45
240
45
650
730
3VDC
(32V allowed)
1 VDC
600
1.6 volts
14 mA
24–280
1750
4,000VRMS
0.67
0.9
380D25
380
25
250
1000
3VDC
(32V allowed)
1 VDC
800
1.6 volts
12 mA
24–420
250
4,000VRMS
1.2
1.3
380D45
380
45
650
1000
3VDC
(32V allowed)
1 VDC
800
1.6 volts
12 mA
24–420
1750
4,000VRMS
0.67
0.9
120A10
120
10
110
33K
85VAC
(280V allowed)
10 VAC
600
1.6 volts
7 mA
12–140
50
4,000VRMS
1.3
1.6
120A25
120
25
250
33K
85VAC
(280V allowed)
10 VAC
600
1.6 volts
7 mA
12–140
250
4,000VRMS
1.2
1.3
240A10
240
10
110
33K
85VAC
(280V allowed)
10 VAC
600
1.6 volts
14 mA
24–280
50
4,000VRMS
1.3
1.6
240A25
240
25
250
33K
85VAC
(280V allowed)
10 VAC
600
1.6 volts
14 mA
24–280
250
4,000VRMS
1.2
1.3
240A45
240
45
650
33K
85VAC
(280V allowed)
10 VAC
600
1.6 volts
14 mA
24–280
1750
4,000VRMS
0.67
0.9
Form 0859-100305
DATA SHEET
Note: θjc* = Thermal resistance from internal junction to base. Maximum internal junction temperature is 110 °C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
PAGE
4
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
120/240/380 Volt (cont.)
Thermal Ratings
Surge Current Data
3-Amp 10-Amp 25-Amp 45-Amp
Time
Time*
Peak
Peak
Peak
Peak
(Seconds) (Cycles) Amps Amps Amps Amps
1
85
110
250
650
0.050
3
66
85
175
420
0.100
6
53
70
140
320
0.200
12
45
60
112
245
0.500
30
37
50
80
175
1
60
31
40
67
134
2
120
28
33
53
119
3
180
27
32
49
98
4
240
26
31
47
95
5
300
25
30
45
91
10
600
24
28
42
84
Solid-State Relays
0.017
Note: *60 HZ.
Dimensional Drawings
Side view: Part numbers DC60S3, 120D3,
and 240D3 only
Form 0859-100305
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Side view: All other part numbers
PAGE
5
Solid-State Relays
480/575 Volt
Solid-State Relays
Model
Number
Nominal Nominal 1 cycle Nominal
AC Line Current Surge Signal Input
Voltage Rating (Amps) Resistance
(Amps) Peak
(Ohms)
Signal
Pick-up
Voltage
Signal
Peak
Maximum Off-State Operating I2t
Isolation
θjc* Dissipation
Drop-out Repetitive Output
Leakage
Voltage Rating Voltage (°C/Watt) (Watts/Amp)
Voltage Voltage
Voltage
(mA)
Range
t=8.3
Maximum
Drop
Maximum** (Volts AC) (ms)
480D10-12
480
10
110
1000
3VDC
(32V allowed)
1 VDC
1200
3.2 volts
11 mA
100–530
50
4,000VRMS
1.2
2.5
480D15-12
480
15
150
1000
3VDC
(32V allowed)
1 VDC
1200
3.2 volts
11 mA
100–530
50
4,000VRMS
1.2
2.5
480D25-12
480
25
250
1000
3VDC
(32V allowed)
1 VDC
1000
1.6 volts
11 mA
100–530
250
4,000VRMS
1.3
1.3
480D45-12
480
45
650
1000
3VDC
(32V allowed)
1 VDC
1000
1.6 volts
11 mA
100–530
1750
4,000VRMS
0.67
0.9
575D15-12
575
15
150
1000
3VDC
(32V allowed)
1 VDC
1200
3.2 volts
15 mA
100–600
90
4,000VRMS
1.2
2.5
575D45-12
575
45
650
1000
3VDC
(32V allowed)
1 VDC
1000
1.6 volts
15 mA
100–600
1750
4,000VRMS
0.67
0.9
575Di45-12
575
45
650
730
3VDC
(32V allowed)
1 VDC
1000
1.6 volts
15 mA
100–600
1750
4,000VRMS
0.67
0.9
Note: θjc* = Thermal resistance from internal junction to base. Maximum internal junction temperature is 110 °C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
Surge Current Data
Thermal Ratings
15-Amp 25-Amp 45-Amp
Time
Time*** 10-Amp
Peak
Peak
Peak
Peak
Second (Cycles) Amps
Amps
Amps
Amps
0.017
1
110
150
250
650
0.050
3
85
140
175
420
0.100
6
70
110
140
320
0.200
12
60
90
112
245
0.500
30
50
70
80
175
1
60
40
55
67
134
2
120
33
49
53
119
3
180
32
47
49
98
4
240
31
43
47
95
5
300
30
40
45
91
10
600
28
35
42
84
Form 0859-100305
DATA SHEET
Note: ***60 HZ
PAGE
6
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
480/575 Volt (cont)
Dimensional Drawings
Side view: Part numbers DC60S3, 120D3,
and 240D3 only
Z Series Specifications
Solid-State Relays
Side view: All other part numbers
AC Power: 120/240 Volt
The Z Series employs a unique heat transfer system that makes it possible for Opto 22 to deliver a low-cost, 10-amp, solid-state relay in an allplastic case. The push-on tool-free quick-connect terminals make the Z Series ideal for high-volume OEM applications. Operating
temperature is –40 °C to 100 °C.
Z120D10
Z240D10
Nominal AC Line Voltage Nominal
120
240
Current Rating (Amps)
10
10
1 cycle Surge (Amps) Peak
110
110
Nominal Signal Input Resistance (Ohms)
1000
1000
Signal Pick-up Voltage
3VDC (32V allowed)
3VDC (32V allowed)
Signal Drop-out Voltage
1 VDC
1 VDC
Peak Repetitive Voltage Maximum
600
600
Maximum Output Voltage Drop
1.6 volts
1.6 volts
Off-State Leakage (mA) Maximum**
6 mA
12 mA
Operating Voltage Range (Volts AC)
12–140
24–280
I Rating t=8.3 (ms)
50
50
Isolation Voltage
4,000 VRMS
4,000 VRMS
θjc* (°C/Watt) Dissipation (Watts/Amp)
4
4
2t
Form 0859-100305
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Notes: θjc* = Thermal resistance from internal junction to base. Maximum internal junction
temperature is 110°C.
** Operating Frequency: 25–65 Hz (operates at 400 Hz with 6 times the offstate leakage)
PAGE
7
Solid-State Relays
AC Power: 120/240 Volt (cont.)
Solid-State Relays
Current vs. Ambient Ratings
Surge Current Data
Time
Second
Time***
(Cycles)
Peak
Amps
0.017
1
110
0.050
3
85
0.100
6
70
0.200
12
60
0.500
30
50
1
60
40
2
120
33
3
180
32
4
240
31
5
300
30
10
600
28
Note: ***60 HZ
Form 0859-100305
DATA SHEET
Dimensional Drawings
PAGE
8
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Printed Circuit Series Specifications
AC Power: MP and P Series
The MP Series packaging is designed with a minimum footprint to allow maximum relay density on the printed circuit board. The P Series
power relays provide low-profile for 0.5-inch (12.7 mm) center mounting on printed circuit boards. Operating temperature: –40 °C to 100 °C.
MP120D4
or P120D4
MP240D2
or P240D2
MP240D4
or P240D4
MP380D4
Nominal AC Line Voltage
120
120
240
240
380
Nominal Current Rating Amps
2
4
2
4
4
1 cycle Surge (Amps) Peak
20
85
20
85
85
Nominal Signal Input
Resistance (Ohms)
1000
1000
1000
1000
1000
Signal Pick-up Voltage
3VDC***
(24V allowed)
3VDC***
(24V allowed)
3VDC***
(24V allowed)
3VDC***
(24V allowed)
3VDC***
(24V allowed)
Signal Drop-out Voltage
1 VDC
1 VDC
1 VDC
1 VDC
1 VDC
Peak Repetitive Voltage Maximum
600
600
600
600
800
Maximum Output Voltage Drop
1.6 volts
1.6 volts
1.6 volts
1.6 volts
1.6 volts
Off-State Leakage mA Maximum**
5 mA
5 mA
5 mA
5 mA
5 mA
Operating Voltage Range (Volts AC)
12–140
12–140
24–280
24–280
24–420
I2t
2
30
2
30
30
Isolation Voltage
4,000 VRMS
4,000 VRMS
4,000 VRMS
4,000 VRMS
4,000 VRMS
θjc* °C/Watt
20
6.5
20
6.5
6.5
Dissipation Watts/Amp
1.2
1.2
1.2
1.2
1.2
Rating (Motor Load)
1 FLA at 120 VAC
6 LRA at 120 VAC
2.5 FLA at 240 VAC
6 LRA at 240 VAC
1 FLA at 120 VAC
15 LRA at 120 VAC
2.5 FLA at 240 VAC
15 LRA at 240 VAC
2.5 FLA at 380 VAC
15 LRA at 380 VAC
Rating t=8.3 (ms)
Solid-State Relays
MP120D2
or P120D2
Notes: θjc* = Thermal resistance from internal junction to base. Maximum internal junction temperature is 110 °C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
*** = P Series 32 volts maximum.
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
9
Solid-State Relays
AC Power: P and MP Series (cont.)
e
Surge Current Data
Solid-State Relays
Time
Time*
Second (Cycles)
Dimensional Drawings
Peak
Amps
Peak
Amps
0.017
1
20
85
0.050
3
18
66
0.100
6
15
53
0.200
12
11
45
0.500
30
9
37
1
60
8.5
31
2
120
8
28
3
180
7.5
27
4
240
7
26
5
300
6.5
25
10
600
6
24
Form 0859-100305
DATA SHEET
Note: *60 HZ
PAGE
10
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
AC Power: P and MP Series (cont.)
Thermal Ratings
Time
Time*
Second (Cycles)
Peak
Amps
Peak
Amps
0.017
1
20
85
0.050
3
18
66
0.100
6
15
53
0.200
12
11
45
0.500
30
9
37
1
60
8.5
31
2
120
8
28
3
180
7.5
27
4
240
7
26
5
300
6.5
25
10
600
6
24
Solid-State Relays
Surge Current Data
Note: *60 HZ
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
11
Solid-State Relays
DC Switching Series Specifications
DC60P or
DC60MP
DC200P or
DC200MP
DC60S-3
DC60S-5
5-60 VDC
5-200 VDC
5-60 VDC
5-60 VDC
Forward Voltage
Drop
1.5 volts
1.5 volts
at 1 amp
1.5 volts
at 3 amps
1.5 volts
at 5 amps
Nominal Current
Rating
3 amps
1 amp
3 amps
5 amps
Off-State Blocking
60 VDC
250 VDC
60 VDC
60 VDC
Signal Pickup
Voltage
3 VDC
32 Volts*
allowed
3 VDC
32 Volts*
allowed
3 VDC
32 Volts
allowed
3 VDC
32 Volts
allowed
Signal Dropout
Voltage
1 VDC
1 VDC
1 VDC
1 VDC
1,000 ohms
1,000
ohms
1 Second Surge
5 amps
2 amps
5 amps
10 amps
Operating Temp.
Range
-40° C to
100° C
-40° C to
100° C
-40° C to
100° C
-40° C to
100° C
Solid-State Relays
Operating Voltage
Range
Signal Input
Impedance
Isolation Voltage
1,000 ohms 1,000 ohms
4,000 VRMS 4,000 VRMS 4,000 VRMS 4,000 VRMS
1 mA
maximum
1 mA
maximum
1 mA
maximum
1 mA
maximum
Package Type
P/MP
series
P/MP
series
Power
series
Power
series
Turn-On Time
100 μsec
100 μsec
100 μsec
100 μsec
Turn-Off Time
750 μsec
750 μsec
750 μsec
750 μsec
Off-state Leakage
Thermal Ratings
Form 0859-100305
DATA SHEET
Note: *MP series maximum allowed control signal 24 VDC.
PAGE
12
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Dimensional Drawings
Side view: Part numbers DC60S3,
120D3, and 240D3 only
Solid-State Relays
Side view: All other part numbers
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
13
Solid-State Relays
HS Series Specifications
Solid-State Relays
The HS Series features an integrated heatsink, which makes them so cool. Because there is less thermal resistance internal to the unit than in
a standard SSR mounted to the same heat sink, heat dissipates more easily. The built-in heatsink means you don't have to select a heatsink,
and installation is much easier. Each HS-series SSR has built-in hardware for screw mounting and a built-in DIN-rail adapter clip for mounting
to a 35mm DIN rail.
Model Number
Nominal AC Line Voltage
Operating Voltage Range (Volts AC)
Peak Repetitive Voltage Maximum
240D30-HS
480D25-HS
575D30-HS
240
480
575
24–280
100–530
100–600
600
1000
1200
Off-State Leakage (mA) Maximum**
5 mA
10 mA
12 mA
Nominal Output Voltage Drop (RMS)
1.0 volts
1.0 volts
1.0 volts
30
25
30
Nominal Current Rating (Amps)
1 cycle Surge (Amps) Peak
610
610
610
I2t Rating t=8.3 (ms)
1550
1550
1550
Isolation Voltage (transient 4KV)
2,500VRMS
2,500VRMS
2,500VRMS
Dissipation (Nominal Watts/Amp)
1.0
1.0
1.0
Signal Pick-up Voltage
4VDC
(32V allowed)
4VDC
(32V allowed)
4VDC
(32V allowed)
Signal Drop-out Voltage
1 VDC
1 VDC
1 VDC
Nominal Signal Input Resistance (Ohms)
730
1000
1000
θja* (°C/Watt)
2.2
2.2
2.2
Note: θja* = Thermal resistance from internal junction to ambient. Maximum internal junction
temperature is 110 °C.
** Operating Frequency: 25 to 65 Hz (operates at 400 Hz with 6 times the offstate leakage)
Surge Current Data, Peak Amps
Form 0859-100305
DATA SHEET
Time
Second
PAGE
14
60HZ
50HZ
0.0167
610
580
0.05
394
375
0.1
300
386
0.2
230
219
0.5
164
156
1
126
120
2
112
106
3
92
87
4
89
85
5
85
81
10
79
75
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
HS-series (cont.)
Thermal Ratings
30
30
25
A
25 Amp Models
RMS Amperes
20
B
15
10
5
20
30
40
50
60
70
80
90
100
A
20
B
15
10
5
20
30
Ambient Temperature (°C)
40
50
60
70
80
90 100
Ambient Temperature (°C)
A: Single relay or with 0.75” spacing between relays. Derate above 40 °C; subtract 0.5 amp/°C.
B: Three relays side by side with 0.25” spacing. All relays with the same load. Derate above 40 °C; subtract 0.4 amp/°C.
Solid-State Relays
30 Amp Models
RMS Amperes
25
NOTE: This data is for SSRs mounted to a horizontal surface. To take advantage of the
cooling effect of natural air flow, we recommend mounting HS-series SSRs to a vertical
surface with the Opto 22 logo right side up as shown here.
Dimensional Drawing
3.90” (99.11mm)
3.50” (88.90mm)
0.20” (5.08mm)
1.25”
(31.75mm)
0.25”
(6.35mm)
3.21” (81.55mm)
1.75”
(44.45mm
4.81”
(122.17mm)
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
15
Solid-State Relays
Applications: Tips
Heat Sink Calculation
Solid-State Relays
Like all semiconductor devices, SSR current ratings must be based on maximum internal junction temperature. All Opto 22 SSRs operate
conservatively at maximum internal junction temperatures of 110 °C. Use the equation below to calculate the maximum allowable heat sink
thermal resistance for your application. It is good engineering practice to provide a margin for error instead of running the application right at
the limits. If your application is near the thermal limit, it can be helpful to add a fan to move air across the heat sink.
IMPORTANT: Thermally conductive grease must be used between the relay base and the heat sink.
Sample Calculation 1
120-volt, 20-amp load; 50 °C ambient air temperature
Model: 120D25 SSR.
See the last two columns of the table on page 4 for thermal resistance and dissipation values for the 120D25. Also, see the note at the bottom
of the table.
Dissipation: 1.3 watts/amp
Thermal resistance: 1.2 °C/watt
Maximum junction temperature: 110 °C
The calculation would be as follows:
Form 0859-100305
DATA SHEET
This means that you should select a heat
sink with a thermal resistance of less
than 1.1 °C/watt.
PAGE
16
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Sample Calculation 2
240-volt,18-amp load, 25 °C ambient air temperature
Model: 240D45
See the last two columns of the table on page 4 for thermal resistance and dissipation values for the 240D45. Also, see the note at the bottom
of the table.
The calculation would be as follows:
This means that you should select a heat
sink with a thermal resistance of less
than 4.6 °C/watt.
Solid-State Relays
Dissipation: 0.9 watts/amp
Thermal resistance: 0.67 °C/watt
Maximum junction temperature: 110 °C
Duty Cycle Calculation
When solid-state relays are operated in an on/off mode, it may be advantageous to calculate the RMS value of the current through the SSR for
heat sinking or determining the proper current rating of the SSR for the given application.
IRMS = RMS value of load or SSR
T1 = Time current is on
T2 = Time current is off
ION = RMS value of load current during on period
I RMS =
(ION)2 x T1
T1 + T2
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
17
Solid-State Relays
Solid-State Relays
Transformer Loads
Solenoid Valve and Contactor Loads
Careful consideration should be given to the selection of the proper
SSR for driving a given transformer. Transformers are driven from
positive saturation of the iron core to negative saturation of the core
each half cycle of the alternating voltage. Large inrush currents can
occur during the first half cycle of line voltage if a zero-voltage SSR
happens to turn on during the positive half cycle of voltage when
the core is already in positive saturation. Inrush currents greater
than 10 times rated transformer current can easily occur. The
following table provides a guide for selecting the proper SSR for a
given transformer rating.
All Opto 22 SSRs are designed to drive inductive loads such as
solenoid valves and electromechanical contactors. The built-in
snubber in each SSR assures proper operation into inductive loads.
The following table is a guide in selecting an SSR to drive a solenoid
or contactor.
120-Volt Coils
SSR CURRENT
RATING
SOLENOID
CONTACTOR
2-Amp
1-Amp
NEMA Size 4
4-Amp
3-Amp
NEMA Size 7
240-Volt Coils
120-Volt Transformers
TRANSFORMER
SSR CURRENT
RATING
P or MP 120D2
100 VA
Z120D10
500 VA
120D3
100 VA
SSR MODEL
P or MP 120D4
250 VA
120D10 or 120A10
500 VA
120D25 or 120A25
1 KVA
120D45
2 KVA
240-Volt Transformers
P or MP240D2
200 VA
7240D10
1 KVA
120D3
200 VA
P or MP240D4
500 VA
240D10 or 240A10
1 KVA
240D25 or 240A25
2 KVA
240D45
4 KVA
480-Volt Transformers
SSR MODEL
TRANSFORMER
480D10-12
5-Amp Primary
480D15-12
5-Amp Primary
SOLENOID
CONTACTOR
2-Amp
1-Amp
NEMA Size 7
4-Amp
3-Amp
NEMA Size 7
Control Current Calculation
All Opto 22 DC-controlled SSRs have a control circuit consisting of
1000 ohms in series with an LED. The LED will drop 1 volt, so the
voltage across the internal resistor will be 1 volt less than the control
voltage.
The control current (IC ) can be calculated from the control voltage
(VC ) as follows:
IC = (VC - 1)/1000
Examples:
3 VDC control voltage:
IC = (3 - 1)/1000 = 0.002 A (2 mA)
32 VDC control voltage:
IC = (32 - 1)/1000 = 0.031 A (31 mA)
For control voltages above 32 VDC, an external resistor can be
added in series with the SSR to limit the control current. Also, if the
device driving the control current to the SSR is limited, you can limit
the control current by using an external resistor (Re).
IC = (VC - 1)/ (Re + 1000)
Re = [(VC - 1)/(IC)] -1000
To limit the control current to 2 mA, this simplifies to:
Form 0859-100305
DATA SHEET
Re = 500 (VC - 3)
PAGE
18
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Opto 22 SSRs for controlling single-phase motors are shown in the
following tables:
120-Volt Single-Phase
Non-Reversing Motors
SSR Model
MOTOR RATING
1 Amp
Z120D10
1/4 HP
120D3
1-1/2 Amp
P or MP120D4
1-1/2 Amp
120D10 or 120A10
1/4 HP
120D25 or 120A25
1/3 HP
120D45
3/4 HP
In applications requiring higher voltage, two Opto 22 SSRs may be
operated in series for double the voltage rating. The built-in
snubber in each SSR assures proper voltage sharing of the two SSRs
in series. In the following diagram, two 240-volt, 45-amp SSRs are
connected in series for operation on a 480-volt line. The control is
shown with a parallel hook-up but it should be noted that a serial
connection can also be implemented.
240-Volt Single Phase
Non-Reversing Motors
SSR Model
MOTOR RATING
P or MP240D2
1 Amp
Z240D10
1/4 HP
240D3
1-1/2 Amp
P or MP240D4
1-1/2 Amp
240D10 or 240A10
1/3 HP
240D25 or 120A25
1/2 HP
240D45
1-1/2 HP
Lamp Loads
Since all Opto 22 SSRs are zero-voltage switching, they are ideal for
driving incandescent lamps, because the initial inrush current into a
cold filament is reduced. The life of the lamp is increased when
switched by a zero-voltage turn-on SSR. The following table is a guide
to selecting an Opto 22 SSR for switching a given incandescent lamp.
120 Volt Lamps
SSR CURRENT RATING
120-Volt Single-Phase
Reversing Motors
Solid-State Relays
P or MP120D2
Solid-State Relays in Series
LAMP RATING
2-Amp
100 Watt
4-Amp
400 Watt
10-Amp
1 Kilowatt
SSR Model
MOTOR RATING
25-Amp
2 Kilowatt
P or MP240D2
1 Amp
45-Amp
3 Kilowatt
Z240D10
1/4 HP
240D3
1-1/2 Amp
P or MP240D4
1-1/2 Amp
240D10 or 240A10
1/4 HP
240D25 or 120A25
1/3 HP
240D45
3/4 HP
240 Volt Rating
SSR CURRENT RATING
LAMP RATING
2-Amp
200 Watt
4-Amp
800 Watt
10-Amp
2 Kilowatt
25-Amp
4 Kilowatt
45-Amp
6 Kilowatt
240-Volt Single-Phase
Reversing Motors
1/4 HP
480D15-12
1/4 HP
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Form 0859-100305
MOTOR RATING
480D10-12
DATA SHEET
SSR Model
PAGE
19
Solid-State Relays
Single-Phase Reversing Motor Control (cont.)
Solid-State Relays
Heater Loads
Care should be taken in selecting a SSR for driving a heater load if
the load is cycled on and off in a continuous manner as might occur
in a temperature control application. Constant cycling can cause
thermal fatigue in the thyristor chip at the point where the chip
bonds to the lead frame. Opto 22 employs a thick copper lead frame
for mounting the SCR chips in the power series SSRs to eliminate
thermal fatigue failures. In addition, Opto 22 recommends
operating any SSR at 75% rated current for cycling heater loads to
ensure complete reliability.
The following table is a guide to selecting the proper SSR for a given
heater load.
Nominal SSR
Current Rating
Maximum
Recommended
Heater Current
2-Amp
1½-Amp
4-Amp
2½-Amp
10-Amp
7½-Amp
25-Amp
18-Amp
45-Amp
35-Amp
10 480V
8-Amp
10 480V
8-Amp
The resistors are unnecessary if the control circuit is designed
to ensure that one SSR is off before the other SSR is on.
Three-Phase Motor Control
Single-Phase Reversing Motor Control
The circuit diagram below illustrates a typical 1 Ø motor winding
inductance and the phase shift capacitor can cause twice-line
voltage to appear across the open SSR. A 240-volt SSR should be
used for a 120-volt line. During the transition period when one SSR
is turned on and the other SSR is going off, both SSRs may be on. In
this case, the capacitor may discharge through the two SSRs,
causing large currents to flow, which may destroy the SSRs. The
addition of RL as shown will protect the SSRs from the short circuit
capacitor discharge current.
Three-phase motors may be controlled by solid-state relays as
shown. A third SSR as shown is optional, but not necessary. The
control windings may be connected in series or parallel. Care should
be taken to ensure that the surge current drawn by the motor does
not exceed the surge current rating of the SSR.
Form 0859-100305
DATA SHEET
240 Volt Three-Phase Motor
PAGE
20
SSR MODEL
MOTOR
Z240D10
3/4 HP
240D10
3/4 HP
240A10
3/4 HP
240D25
2 HP
240A25
2 HP
240D45
3 HP
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
480 Volt Three-Phase Motors
SSR MODEL
MOTOR
480D10-12
1-½ HP
480D15-12
1-½ HP
Three-Phase Reversing Motor Control
Opto 22
Relay
Motor Full
Load Rating
Resistor for
120V line
Resistor for
240V line
3-Amp
1.25-Amp
4 ohm 50 W
8 ohm 50 W
10-Amp
5-Amp
1 ohm 100 W
2 ohm 100 W
25-Amp
8-Amp
.5 ohm 100 W
1 ohm 100 W
45-Amp
16-Amp
.25 ohm 150 W
.5 ohm 150 W
15-Amp
5-Amp
1 ohm 100 W
2 ohm 100 W
Solid-State Relays
Three-phase reversing motor control can be implemented with four
SSRs as shown in the connection diagram. The SSRs work in pairs
with SSR1 and SSR3 operated for rotation in one direction and SSR2
and SSR4 operated for rotation in the reverse direction. The resistor
R1 as shown in the connection diagram protects against line-toline shorts if SSR1 and SSR4 or SSR3 and SSR2 are on at the same
time during the reversing transition period. Use the following table
as a guide to the proper selection of an SSR for this application.
Form 0859-100305
DATA SHEET
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
21
Solid-State Relays
FAQ: SSR Applications
Solid-State Relays
Q : What is a solid-state relay?
A: A solid-state relay (SSR) is a semiconductor device that can be
used in place of a mechanical relay to switch electricity to a load in
many applications. Solid-state relays are purely electronic, normally
composed of a low current “control” side (equivalent to the coil on
an electromechanical relay) and a high-current load side
(equivalent to the contact on a conventional relay). SSRs typically
also feature electrical isolation to several thousand volts between
the control and load sides. Because of this isolation, the load side of
the relay is actually powered by the switched line; both line voltage
and a load (not to mention a control signal) must be present for the
relay to operate.
Q : What are the advantages of using an SSR over a
mechanical relay?
A: There are many applications that require a moderate amount of
power (W to kW) to be switched on and off fairly rapidly. A good
example would be the operation of a heater element in a
controlled-temperature system. Typically, the amount of heat put
into the system is regulated using pulse-width modulation turning
a fixed-power heating element on and off for time periods ranging
from seconds to minutes. Mechanical relays have a finite cycle life,
as their components tend to wear out over thousands to millions of
cycles. SSRs do not have this problem; in the proper application,
they could be operated almost infinitely.
Q : Do you make multi-pole or multi-throw SSRs?
A: Opto 22 manufactures only single-pole, single-throw SSRs. If
multi-phase operation is required, just use a relay on each phase.
Because of the limitations on semiconductor devices of the type
used in SSRs, it is not practical to build single-device multi-throw
SSRs. However, an alternative to multi-throw operation may be
accomplished with multiple relays.
Q : Can I hook up SSRs in parallel to achieve a higher
current rating?
A: No. There is no way to guarantee that two or more relays will
turn on simultaneously when operated in parallel. Each relay
requires a minimum voltage across the output terminals to
function; because of the optical isolation feature, the “contact” part
of the SSR is actually powered by the line it switches. One relay
turning on before the other will cause the second relay to lose its
turn-on voltage, and it won’t ever turn on, or at least not until the
first relay fails from carrying too much current.
Q : What does a “zero-crossing” turn-on circuit refer
to?
A: “Zero-crossing” turn-on and turn-off refer to the point on the AC
wave form when the voltage is zero. It is at this point that an AC SSR
will turn on or off. All Opto 22 AC relays are designed with a zerocrossing turn-on and turn-off circuit. When the AC circuit voltage is
at zero, no current is flowing. This makes it much easier and safer for
the semiconductor device in the relay to be turned on or off. It also
generates much less electrical EMI/RFI noise.
Form 0859-100305
DATA SHEET
Q : What are the limitations of using an SSR?
PAGE
22
A: SSRs have a few limitations when compared to the capabilities
of their mechanical counterparts. First, because the relay is
semiconductor-based, it will never turn all the way on, nor off. This
means that in the “on” state, the relay still has some internal
resistance to the flow of electricity, causing it to get hot. When in
the “off” state, the relay will exhibit a small amount of leakage
current, typically a few mA. This leakage can conspire to keep some
loads, especially ones with a high impedance, from turning off!
Additionally, SSRs are more sensitive to voltage transients; while
Opto 22 relays are very well transient-protected, if a relay gets hit
hard enough a sufficient number of times, it will die or degrade.
This makes SSRs less ideal for driving highly inductive
electromechanical loads, such as some solenoids or motors. SSRs
should also never be used for applications such as safety power
disconnects, because even in the off state, leakage current is
present. Leakage current through an SSR also implies the presence
of a potentially high voltage. Even though the relay is not
conducting a large amount of current, the switched terminal will
still be “hot,” and thus dangerous.
Q : Can I use an AC SSR to switch DC?
A: No. Because of the zero-crossing circuit described above, the
relay will most likely never turn on, and even if it is on, it will likely
not be able to be turned off, as DC voltage typically never drops to
zero.
Q : Can I use a DC SSR to switch AC?
A: No. The semiconductor device used in Opto 22’s DC SSRs is
polarized. It may break down and conduct for the portion of the
waveform that is reversed in polarity.
Q : Can a DC SSR be used to switch an analog signal?
A: This is not recommended at all. First, the voltage drop across the
relay will cause signal loss. Second, the conduction characteristics of
the SSR are very non-linear at low operating voltages and currents.
Use a mechanical relay; it will work much better.
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
Q : What agency approvals do your SSRs carry?
A: In general, Opto 22 relays carry UL, CSA, and CE approval. See
http://support.opto22.com. Additionally, some SSRs contain
VDE-approved optocouplers; contact Opto 22 for more information.
FAQ: SSR Troubleshooting
A: There is no “normal” mode of failure for SSRs. They just stop
working, by refusing to turn on or off. An improper installation is
often to blame for an SSR failure, as these are very simple, reliable
devices. If you have a failed SSR, it is important to look at the normal
operating parameters of that relay within the larger system to make
sure that the relay being used is appropriate to the application, and
that the relay is being properly installed in the system. The three
most common causes of SSR failure are as follows:
• SSR improperly matched to load. The relay was destroyed
by overheating from carrying too much current too long.
• SSR insufficiently protected. Remember, a semiconductor
is less tough than a simple metal contact. Reverse voltages
exceeding the PRV rating of the relay will cause damage. Voltage spikes on the switched line, perhaps from inductive kickback, may have destroyed one or more of the internal switching
devices. Remember to use snubbers, transorbs, MOVs, and/or
commutating diodes on highly inductive loads.
• SSR improperly installed. The SSR was not mounted to a
large enough heat sink, or no thermal compound was used,
causing the relay to overheat. Also, insufficient tightening of the
load terminals can cause arcing and ohmic heating of the relay.
Opto 22 recommends 18 inch-pounds of torque on the load
screw terminals. Similar failures have also been attributed to
the use of crimp-on terminal lugs or spades; make sure such
terminals are tightly crimped, and even drip some solder into
the joint to ensure good electrical contact and protection from
corrosion.
Q : How can I test my SSR?
Q : I have an SSR driving a load. The load turns on
okay, but never seems to turn off, unless I remove
power from the relay entirely. What might be happening?
A: This is normally a problem when using an SSR with a highimpedance load, such as a neon lamp or a small solenoid. Loads like
these often have relatively large initial currents, but relatively small
“hold in” currents. The result is that the off-state leakage current
through the relay (see previous section) is insufficient to cause the
load to turn on to start with, but sufficient to keep it on, once
started. The solution is to place a power resistor, sized for 8–10
times the rated maximum leakage current for the SSR in parallel
with the load. Make sure that this resistor has a high enough power
rating for the application. For example, for a 5 mA leakage current at
120 VAC, a resistor drawing 50 mA would be desirable. Using Ohm’s
Law, the resistor value becomes 2,400 ohms. This resistor will
dissipate 6 watts, so a 7.5 or 10-watt size power resistor should be
used.
Solid-State Relays
Q : My SSR does not function anymore. What may
have happened?
to change state unless zero voltage is applied. Most test equipment
will supply a DC voltage to the relay, and the relay will thus never
see the zero it requires to change state. To test an SSR, it is best to
operate it at the actual line voltage it will be used at, driving a load
such as a large light bulb.
Q : I have a new AC SSR driving a solenoid. It turns on
okay once, but will not turn on again. What is going
on?
A: Some solenoids, some types of halogen lights, and some types
of strobe lights incorporate a diode in series with the coil or
filament. This causes the light to behave as a half-wave rectifier.
Opto 22 SSRs have a built-in R-C snubber circuit in parallel with the
output. The capacitor in this circuit charges up but cannot discharge
through the series diode, causing a voltage to appear across the SSR
terminals. Because the SSR must see a zero voltage across the
terminals to come on, it can’t turn on again in this situation. The
solution here would be to put a high-value resistor (several tens of
Kohms) across the terminals of the relay, to allow the capacitor to
drain its charge.
Form 0859-100305
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2006–2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
A: It is not possible to test an SSR by the same methods used to test
mechanical relays; a typical SSR will always show an infinite
impedance to a resistance meter placed across the output
terminals. There are a few reasons for this. First, the SSR requires a
small amount of power to operate, derived from whatever voltage
source is placed on the load terminals. A typical multimeter will not
supply sufficient voltage to cause the relay to change state. Second,
AC SSRs contain a zero-crossing circuit, which will not allow them
PAGE
23
More About Opto 22
Products
SNAP PAC Brains
Opto 22 develops and manufactures reliable, flexible, easy-to-use
hardware and software products for industrial automation, remote
monitoring, and data acquisition applications.
SNAP PAC System
Designed to simplify the typically complex process of
understanding, selecting, buying, and applying an automation
system, the SNAP PAC System
consists of four integrated
components:
• SNAP PAC controllers
• PAC Project™ Software Suite
• SNAP PAC brains
• SNAP I/O™
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for
I/O processing and communications. Brains offer analog, digital,
and serial functions, including thermocouple linearization; PID loop
control; and optional high-speed digital counting (up to 20 kHz),
quadrature counting, TPO, and pulse generation and measurement.
SNAP I/O
I/O provides the local connection to sensors and equipment.
Opto 22 SNAP I/O offers 1 to 32 points of reliable I/O per module,
depending on the type of module and your needs. Analog,
digital, serial, and special-purpose modules are all mixed on
the same mounting rack and controlled by the same processor
(SNAP PAC brain or rack-mounted controller).
Quality
SNAP PAC Controllers
Programmable automation controllers
(PACs) are multifunctional, multidomain,
modular controllers based on open standards and
providing an integrated development environment.
Opto 22 has been manufacturing PACs for many years. The latest
models include the standalone SNAP PAC S-series and the rackmounted SNAP PAC R-series. Both handle a wide range of digital,
analog, and serial functions and are equally suited to data
collection, remote monitoring, process control, and discrete and
hybrid manufacturing.
SNAP PACs are based on open Ethernet and Internet Protocol (IP)
standards, so you can build or extend a system without the expense
and limitations of proprietary networks and protocols.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite provides full-featured and
cost-effective control programming, HMI (human machine
interface) development and runtime, OPC server, and database
connectivity software to power your SNAP PAC System.
These fully integrated software applications share a single tagname
database, so the data points you configure in PAC Control™ are
immediately available for use in PAC Display™, OptoOPCServer™,
and OptoDataLink™. Commands are in plain English; variables and
I/O point names are fully descriptive.
PAC Project Basic offers control and HMI tools and is free for
download on our website, www.opto22.com. PAC Project
Professional, available for separate purchase, adds OptoOPCServer,
OptoDataLink, options for Ethernet link redundancy or segmented
networking, and support for legacy Opto 22 serial mistic™ I/O units.
Founded in 1974 and with over 85 million devices sold,
Opto 22 has established a worldwide reputation for highquality products. All are made in the U.S.A. at our
manufacturing facility in Temecula, California. Because we
do no statistical testing and each part is tested twice before leaving
our factory, we can guarantee most solid-state relays and optically
isolated I/O modules for life.
Free Product Support
Opto 22’s Product Support Group offers free, comprehensive
technical support for Opto 22 products. Our staff of support
engineers represents decades of training and experience. Product
support is available in English and Spanish, by phone or email,
Monday through Friday, 7 a.m. to 5 p.m. PST.
Free Customer Training
Hands-on training classes for the SNAP PAC System are offered at
our headquarters in Temecula, California. Each student has his or
her own learning station; classes are limited to nine students.
Registration for the free training class is on a first-come, first-served
basis. See our website, www.opto22.com, for more information or
email [email protected].
Purchasing Opto 22 Products
Opto 22 products are sold directly and through a worldwide
network of distributors, partners, and system integrators. For more
information, contact Opto 22 headquarters at 800-321-6786 or
951-695-3000, or visit our website at www.opto22.com.
www.opto22.com
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-090113
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • [email protected]
© 2010 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.