MURATA-PS DMS-30PC-4

DMS-30PC-4/20S
4-20mA Input 3½ Digit Panel Meters
with Full-Size LED Displays
FEATURES
The DMS-30PC-4/20S Series of 4-20mA current-loop-input, 3½ digit, LED display
panel meters offer an outstanding combination of electrical performance, display readability, ease-of-use, and long-term reliability. Each of the 5 models features a large
(0.56"/14.2mm), red or green, LED display. Low-power or high-intensity red models are
optional. Power supplies can be a single +5V or an optional, wide-range +7.5-32V (24V
nominal). All DMS-30PC-4/20S meters are constructed using DATEL's super-reliable, fieldproven, epoxy-encapsulated DMS-30PC digital voltmeters. The entire assembly utilizes
100% soldered connections. These are the most rugged, 4-20mA input, panel meters in the
world.
N
Full-size, 0.56" (14.2mm), red or green LED's
N
Low-power or high-intensity LED's optional
N
Single +5V or optional +7.5-32V supply
N
+24V Isolated-power models
N
Low power consumption, 15mA from +5V
N
100Ω impedance, 2V loop drop
N
DIP-switch selectable range and decimal points
N
Hundreds of different input/readout combinations
N
Vibration-resistant package; Reliable screw-terminal
input connections
N
High-quality, 20-turn, gain/span and zero/offset adjust
potentiometers
N
Miniature size:
Gain (span) and offset (zero) adjustments are both performed with high-precision,
20-turn potentiometers. All decimal point and range-change settings are made on a goldplated, vibration-resistant, DIP switch; there are no cumbersome solder gaps or jumpers
to contend with. Connections to the current loop and the power source are both made on a
rugged, four-position, screw-type terminal block.
The DMS-30PC-4/20S's user-friendly design accommodates virtually hundreds
of different input-current/output-reading combinations. This eliminates the majority of
requirements for more costly, long-lead-time, factory "specials"– especially in applications
requiring several different-range meters. A bezel assembly, featuring secure screw fasteners and an EPDM rubber gasket, is available for applications requiring moisture and/or dust
resistance.
2.17" x 0.92" x 1.02"
55mm x 23mm x 27mm
+5V
DMS-30PC-1
3½ DIGIT A/D
CONVERTER
DATA
R7
GAIN
ADJUST
R3
ZERO
ADJUST
DP1
BAND-GAP
REFERENCE
CIRCUIT
DP2
DP3
N.C.
+5V
ON
+5V
1
2
3
4
5
6
7
8
(SW1)
DIP
SWITCHES
VOLTAGE
CONVERTER
1
TB1
1
TB2
2
1
2
SG9
+
For full details go to
www.murata-ps.com/rohs
+
–
4-20mA
LOOP INPUT
~ –V is not connected to meter ground
on ‘-I’ suffix models.
www.murata-ps.com
–
+V
–V
POWER SUPPLY
INPUT
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 1 of 4
DMS-30PC-4/20S
4-20mA Input 3½ Digit Panel Meters
with Full-Size LED Displays
Performance/Functional Specifications
Ordering Information
Typical at TA = +25°C, unless otherwise noted.
Current Loop Input
Min.
Typ.
Max.
Units
Full Scale Input Range
+3.5
–
+22
mA
Input Impedence
–
100
–
Ohms
Voltage Drop
–
–
2.0
Volts
Overcurrent Protection
–
±0.15
±0.3
mA
Performance
Sampling Rate
DMS-30PC-4/20S-5RS-C
DMS-30PC-4/20S-5GS-C
DMS-30PC-4/20S-5RL-C
DMS-30PC-4/20S-5RH-C
DMS-30PC-4/20S-24RL-C
DMS-30PC-4/20S-24RS-I-C
+5V supply, standard-intensity red LED's
+5V supply, standard-intensity green LED's
+5V supply, low-power red LED's
+5V supply, high-intensity red LED's
+7.5V to +32V supply, low-power red LED's
+24V isolated supply, standard-intensity
red LED’s
+24V isolated supply, high-intensity red LED’s
+24V isolated supply, high-intensity blue LED’s
+24V isolated supply, standard-intensity
green LED’s
DMS-30PC-4/20S-24RH-I-C
DMS-30PC-4/20S-24BS-I-C
DMS-30PC-4/20S-24GS-I-C
2.5 reading per second
Accuracy (1 minute warm-up)
±0.05%FS ±1 Count
DMS-30PC-4/20S-5RS
+4.75 to +5.25Vdc at 225mA max.
DMS-30PC-4/20S-5GS
+4.75 to +5.25Vdc at 225mA max.
ACCESSORIES
DMS-PS4-C
DMS-PS7-C
DMS-BZL1-C
DMS-BZL2-C
DMS-30-CP
DMS-30PC-4/20S-5RH
+4.75 to +5.25Vdc at 225mA max.
A panel-mount retaining clip is supplied with each model.
DMS-30PC-4/20S-5RL
+4.75 to +5.25Vdc at 20mA max.
DMS-30PC-4/20S-24RL
+7.5 to +32Vdc at 30mA max.
DMS-30PC-4/20S-24XX-I (models)
+21.6 to +26.4Vdc at 60mA max.
Temperature Drift
–
±0.15
±0.3
Cnts/°C
Power Supply Requirements
DIP-Switch Settings Table 
Display Reading
Display
Display Type and Size
3½ digit, 0.56"/14.2mm high LED
Polarity Indication
"–" for negative readings
Overrange Indication
"–1_ _ _ " for negative inputs
"1_ _ _ " for positive inputs
Physical/Environmental
Operating Temperature
Storage Temperature
Humidity (non-condensing)
Case Material
Weight
+24V/0.45A AC/DC power supply module
+24V/0.7A AC/DC power supply module
Panel-mount bezel assembly
Panel-mount bezel with sealing gasket
Panel cutout punch
0
–
+60
°C
–40
–
+75
°C
0
–
95
%
Polycarbonate
1 ounces (28 grams)
~ Input Grounding: Except for the "-I"suffix models which feature isolated current
loop inputs, all other DMS-30PC-4/20S meters are supplied with their 4-20mA
negative-input terminals (TB1-2, "-") internally connected to their power supply
ground terminal (TB2-2, “-V”). This single-ended input configuration is compatible
with most grounded-referenced 4-20mA transmitters.
Applications in which the DMS-30PC-4/20S and its associated 4-20mA
transmitter are connected to a common ground and the transmitter drives two or
more loads (for example, the meter in series with a PLC) must have the meter
connected as the first device in the current loop, that is, closest to the system
ground (see Figure 2). If this is not possible and/or the meter must be connected
in the middle of the current loop, then'-I' suffix models must be used to provide
the required isolation between the meter’s current loop input and the power supply ground ("-V"). See Figures 2, 3, 4, and 5 for typical loop connections.
SW1
SW2
SW3
SW4
1.
000 to 100-300
On
On
On
Off
2.
000 to 400-600
Off
On
Off
Off
3.
000 to 700-1999
On
Off
Off
Off
4.
±100
On
On
On
Off
5.
±200 to ±300
On
On
Off
Off
6.
±400 to ±600
On
Off
Off
Off
7.
±700 to ±1999
Off
Off
Off
On
When looking up DIP-switch settings in the Table and the desired display readings happen to fall between two switch settings, try performing the adjustments
with both settings to determine which one offers the better settability. Please
keep in mind that the DMS-30PC meter (from which the DMS-30PC-4/20S is
derived) has an accuracy specification of ±2 counts (max.). Thus, it may not
always be possible to obtain the exact desired display reading.
OPERATING AND SETUP INSTRUCTIONS
As shipped, the DMS-30PC-4/20S is factory calibrated to read "000"
for a 4mA input and "1999" for a 20mA input. The following worst-case
procedure assumes the DMS-30PC-4/20S is completely mis-adjusted,
i.e., both potentiometers and the DIP switches are randomly set.
1. Set R7 (gain/span adjust) and R3 (zero/offset adjust) fully clockwise,
roughly 20 turns, and place SW1-SW8 to OFF (down position).
2. Set SW1 to ON (up position). See DIP switch setting #3.
3. Apply a precision 4mA input, with proper polarity, and adjust R3 until
the meter's display reads "000".
4. Apply a precision 20mA and adjust R7 until the display reads "1999".
Repeat 3 and 4 to make sure adjustments do not affect one another.
5. If desired, select the appropriate decimal point by setting either SW5,
SW6 or SW7 to ON (DP1, DP2 or DP3 respectively).
NOTE: If a display reading other than "000" to "1999" is desired,
refer to the DIP-Switch Settings Table for SW1-SW4 settings.
www.murata-ps.com
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 2 of 4
DMS-30PC-4/20S
4-20mA Input 3½ Digit Panel Meters
with Full-Size LED Displays
Examples
+24V
1. Desired display readings are:
ON
4mA ="0.00"
20mA = "2.00"
+
+V (TB2-1)
(TB1-1)
1
2
4
3
7
6
5
DMS-30PC-4/20S-24RL
+
8
Use DIP-switch setting #1 and enable decimal point DP2 via SW6.
Apply 4mA and adjust R3 so the display reads "0.00". Apply 20mA and
adjust R7 so the display reads "2.00".
LOOP-POWERED
TRANSMITTER
–
4-20mA
N.C.
(TB1-2)
–
–V (TB2-2)
2. Desired display readings are:
24V GROUND
ON
4mA = "–100"
12mA = "000"
20mA = "100"
1
2
3
4
5
7
6
Figure 3. Typical Connections for Loop-Powered Transmitters
Driving Single-Ended Meters.
8
Use DIP-switch setting #4. Apply 12mA and adjust R3 so the display
reads "000". Apply 20mA and adjust R7 so the display reads "100".
Apply 4mA and the display should read "–100". For these display readings, no decimal points are used. Set SW5, SW6 and SW7 to OFF.
+24V
+V (TB2-1)
DMS-30PC-4/20S-24RL-I
3. Desired display readings are:
(TB2-2)
ON
4mA = ".000"
12mA = ".250"
1
2
3
4
–V
5
6
7
+
8
This example is not as straightforward as the previous two. Notice that
12mA is exactly halfway between 4mA and 20mA. If we assume the
input could go up to 20mA, the display reading would be: 2 x .250 or
".500". From the table, we can select DIP-switch setting #2 and enable
DP1 via SW5. Apply 4mA and adjust R3 so the display reads ".000".
Apply 12mA and adjust R7 so the display reads ".250".
+ (TB1-1)
+
(TB1-2)
–
+
PLC or OTHER
SINGLE-ENDED
DEVICE
4-20mA
SINGLE-ENDED
TRANSMITTER
4-20mA
–
–
24V GROUND
Figure 4. Typical Connections for Isolated-Supply Meters
in Series with an Auxiliary Device
CONNECTION DIAGRAMS
+24V
+24V
+
+V (TB2-1)
+
(TB1-1)
4-20mA
+
+
DMS-30PC-4/20S-24RL
SINGLE-ENDED
TRANSMITTER
+5V
+V (TB2-1)
+
(TB1-1)
+
(TB1-2)
–
4-20mA
DMS-30PC-4/20S-24RL
LOOP
TRANSMITTER
–
24V GROUND
(TB1-2)
–
–
–V (TB2-2)
Figure 2. Typical Connections for Single-Ended Transmitters Driving
Single-Ended +24V Powered Meters.
www.murata-ps.com
24V GROUND
–V (TB2-2)
5V GROUND
Figure 5. Typical Connections for +5V Powered Meters. Note that 5V Ground
and 24V Ground are Tied Together Inside the Meter.
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 3 of 4
DMS-30PC-4/20S
4-20mA Input 3½ Digit Panel Meters
with Full-Size LED Displays
MECHANICAL DIMENSIONS: Inches (mm)
2 PL DEC ±0.02 (±0.51)
3 PL DEC ±0.010 (±0.254)
18 to 26 AWG
(Solid or stranded)
0.20" (5.08mm)
STRIPPING LENGTH:
1.33
(33.8)
1
1.02
(25.9)
0.040
(1.02)
®
WIRE SIZE:
DMS-30PC-4/20S
TOLERANCES:
MADE IN USA
®
2.09
(53.09)
0.04
(1.02)
0.84
(21.34)
2.17
(55.12)
Zero/Offset
Adjust
Back View
1 Depth dimension for the DMS-30PC-4/20S-24RL model only.
DIP
Switches
D1
12
0.92
(23.37)
Front View
1
ON
R10
R3
Zero
Adjust
SW1
1
R12
2
3
R9
R1 R8
R7
Gain
Adjust
4
5
6
8
7
SG10
R6
TB1
+
–
TB2
+
–
1
2
U2
SG9
1
R5 R4 R2
Gain/Span
Adjust
2
+ – + –
Loop
Input
DP1
(SW5)
Power
Input
DP2
(SW6)
DP3
(SW7)
OPTIONAL BEZEL (DMS-BZL1 and DMS-BZL2)
FRONT VIEW
#2-56 INSERT
0.156 (3.96) DEEP
0.187
(4.75)
PANEL
®
®
1.270
(32.26)
MADE IN USA
OPTIONAL
GASKET
BEZEL
2.55 (64.77)
RECOMMENDED DRILL AND PANEL CUTOUT DIMENSIONS
RETAINING CLIP INSTALLATION
0.116
(2.95)
INTERNAL CORNER RADII:
0.032 (0.81) MAX.
1.07
(27.18)
PANEL CUTOUT
0.878
(22.30)
PANEL
2.118 (53.80)
®
MADE IN USA
0.096
(2.44)
®
2.35 (59.69)
0.093 (2.362) DIAMETER (4 REQUIRED)
ONLY WHEN USING OPTIONAL BEZEL ASSEMBLY
A panel-mount retaining clip is supplied with all models
USA:
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: [email protected] ISO 9001 and 14001 REGISTERED
11/25/08
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2008 Murata Power Solutions, Inc.
www.murata-ps.com
Mansfield (MA), Tel: (508) 339-3000, email: [email protected]
Canada:
Toronto, Tel: (866) 740-1232, email: [email protected]
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected]
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected]
Germany:
München, Tel: +49 (0)89-544334-0, email: [email protected]
Japan:
Tokyo, Tel: 3-3779-1031, email: [email protected]
Osaka, Tel: 6-6354-2025, email: [email protected]
China:
Shanghai, Tel: +86 215 027 3678, email: [email protected]
Guangzhou, Tel: +86 208 221 8066, email: [email protected]
Singapore:
Parkway Centre, Tel: +65 6348 9096, email: [email protected]
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 4 of 4