oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
Features
■ Incremental encoder / quadrature output
■ Exceptionally long operating life
*R
■ Sturdy construction
■ Bushing mount
■ Available with PC board mounting bracket (optional)
ECW - Digital Contacting Encoder
Electrical Characteristics
Output .......................................................................................... 2-bit gray code, Channel A leads Channel B by 90 º electrically turning clockwise (CW)
Closed Circuit Resistance .......................................................................................................................................................................... 5 ohms maximum
Open Circuit Resistance.......................................................................................................................................................................100 K ohms minimum
Contact Rating ................................................................................................................................................. 10 milliamp @ 10 VDC or 0.1 watt maximum
Insulation Resistance (500 VDC) ................................................................................................................................................... 1,000 megohms minimum
Dielectric Withstanding Voltage (MIL-STD-202 Method 301)
Sea Level ............................................................................................................................................................................................ 1,000 VAC minimum
Electrical Travel..................................................................................................................................................................................................... Continuous
Contact Bounce (15 RPM)............................................................................................................................................................... 5 milliseconds maximum
RPM (Operating) ............................................................................................................................................................................................... 120 maximum
Phase Tolerance (CH A to CH B) ............................................................................................................................................................................90 ° ± 72 °
Environmental Characteristics
Operating Temperature Range .........................................................................................................................................-40 ºC to +85 ºC (-40 °F to 185 °F)
Storage Temperature Range ......................................................................................................................................... -40 ºC to +85 ºC (-40 °F to +185 °F)
Humidity ............................................................................................................................................................... MIL-STD-202, Method 103B, Condition B
Vibration .......................................................................................................................................................................................................................... 15 G
Contact Bounce..........................................................................................................................................................................0.1 millisecond maximum
Shock .............................................................................................................................................................................................................................. 50 G
Contact Bounce..........................................................................................................................................................................0.1 millisecond maximum
Rotational Life ................................................................................................................................................................................ 200,000 shaft revolutions
IP Rating ..........................................................................................................................................................................................................................IP 40
Mechanical Characteristics
Mechanical Angle ................................................................................................................................................................................................. Continuous
Running Torque (Detented) .............................................................................................................................................0.5 to 1.5 N-cm (0.75 to 2.25 oz-in.)
Undetented Torque ........................................................................................................................................................0.17 to 1.0 N-cm (0.25 to 1.50 oz-in)
Mounting Torque ....................................................................................................................................................................... 79 N-cm (7 lb.-in.) maximum
Shaft Side Load (Static)................................................................................................................................................................... 4.5 kg (10 lbs.) minimum
Weight ................................................................................................................................................................................ Approximately 21 gms. (0.75 oz.)
Terminals .................................................................................................................................................................................................PC pin or solder lug
Soldering Condition
Manual Soldering.................................................................................................................. 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
Wave Soldering...........................................................................................................................................96.5Sn/3.0Ag/0.5Cu solder with no-clean flux
260 °C (500 °F) max. for 5 seconds
Wash processes ....................................................................................................................................................................................Not recommended
Marking..........................................................................................................................Manufacturer’s name and trademark, part number, and date code.
Hardware ............................................... One lockwasher and one mounting nut are shipped with each encoder, except where noted in the part number.
Quadrature Output Table – This table is intended to show available outputs as currently defined.
1/4 CYCLE PER DETENT
CW
FULL CYCLE PER DETENT (Normally Open in Detent Shown)
CW
Channel A
Channel A
Closed Circuit
Closed Circuit
Open Circuit
Open Circuit
Closed Circuit
Closed Circuit
Open Circuit
Open Circuit
D D D D D D D D D D D D D D D D D
D
D
Channel B
D
D
D
Channel B
RECOMMENDED INCREMENTAL CONTROL DIAGRAM FOR USE WITH A DEBOUNCE CIRCUIT
.0015 f
7
(CUSTOMER LOGIC CIRCUITRY)
9
DIRECTION
5 ms DELAY
DEBOUNCE
(MC 14490)
DECODE
LOGIC
UP/DOWN
COUNTER
BINARY
OUTPUT
MAGNITUDE
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
ECW - Digital Contacting Encoder
Dimensional Drawings
BUSHING MOUNTED - HOUSING A
Rear-Facing Terminals
PANEL HOLE DIMENSIONS
Bushing Mounted
“L” ± 0.38
(“L” ± .015)
8.51
(.335)
22.2 ± 0.25
(.874 ± .010)
9.52
(.375)
11.1
(.437)
14.7 ± 0.5
DIA.
9.0
(.578 ± .020)
DIA.
(.354)
M9 X 0.75-6g SPL
1.52
(.060)
5.69 ± 0.25
(.224 ± .010)
5.74
(.226)
9.02
(.355)
CHANNEL B
PCB MOUNTING DIMENSIONS
(Housing Styles B and E)
SOLDER HOLES - HOUSING C
Dimensions not given are the same as Bushing Mounted.
CL
23.37 ± 0.25
(.920 ± .010)
.762
(.030)
4 PLCS.
COMMON
11.4
(.450)
2.54
TYP.
(.100)
15.2
(.600)
17.069
(.672)
23.6
(.930)
26.975
(1.062)
14.478
(.570)
1.2
DIA. 7 PLCS.
(.047)
CHANNEL A
2.54
(.100)
1.57
(.062)
ACB
6.35 ± 0.25
(.250 ± .010)
COMMON
7.24 ± 0.25
(.285 ± .010)
1.6
(.063)
11.10
(.437)
COMMON
CHANNEL B
6.32 + 0.03/– 0.06
DIA.
(.249 + .001/– .003)
"D"
Shaft Style R
"D"
14.9 ±.050
DIA.
(.587 ±.020)
2.54
2 PLCS.
(.100)
1.07
3X
(0.042)
11.09
(.437)
4.01 +.050/-.025
(.158 +.002/-.001)
6.35
(.250)
10.90
(.429)
1.19
(.047)
1.57
(.062)
17.4 ±.025
(.685 ±.010)
4.75 +.076/-.050
DIA.
(.187 +.003/-.002)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
19.76
(.778)
4.7
DIA.
(.185)
9.65
FOR SHAFTS
(.380)
14.7
< 1 " LENGTH
FOR SHAFTS ≥ 1 " LENGTH
(.578)
SLOT DEPTH ("Y" SHAFT)
.13
(.005)
.25
(.010)
8.50 ±.025
(.335 ±.010)
MM
(IN)
3.17
DIA.
(.125)
1.57
(.062)
3.55
(.140)
9.93
DIA.
(.391)
9.52
(.375)
3/8–32 UNEF 2A
2.79
(.110)
12.24
(.482)
Shaft Style Y
15.87 ±.038
(.625 ±.015)
22.2 ±.025
(.874 ±.010)
1.19
(.047)
2.54
(.100)
6.00
(.236)
DIA.
1.6
(.063)
23.87
(.940)
9.01 ±.020
(.355 ±.008)
2X
4.75 ± .006/-.051
DIA.
(.187 + .003/-.002)
"D" DIMENSION EXTENDS FROM SHAFT END TO BUSHING FACE
"D" = (SHAFT LENGTH, FMS) – (BUSHING LENGTH)
1.52
(.060)
2.54
(.100)
5.08
(.200)
4.01 + .051/ – .025
(.158 + .002/ – .001)
5.54 ± .076
(.218 ± .003)
21.11
(.831)
.97
8X
R
(.038)
.635
(.025)
Shaft Style J
BUSHING MOUNTED - HOUSING H
Front-Facing Terminals
.635
3 PLCS.
(.025)
27.69 ± 0.25
(1.090 ± .010)
28.50 ± 0.25
(1.122 ± .010)
3X
Shaft Style C
1.19
(.047)
.107
DIA.
(.042)
3 PLCS.
11.33
(.446)
14.68 ± 5.08
DIA.
(0.578 ± 0.20)
9.53
(.375)
CHANNEL A
6.32 + 0.03/– 0.06
DIA.
(.249 + .001/– .003)
B
22.68
(.893)
22.20 ± 0.25
(.874 ± .010)
8.99
(.354)
DIA.
Shaft Style B
A
PCB MOUNTING DIMENSIONS
“L” ± 0.38
(“L” ± .015)
8.51
(.335)
6.35
(.250)
1.52
(.060)
C
5.08
(.200)
CHANNEL B
SNAP-IN MOUNT - Housing G
13.08
(.515)
9.14
DIA.
(.360)
3.17
DIA.
(.125)
28.49 ± 0.25
(1.122 ± .010)
ACB
CHANNEL A
PCB BRACKET MOUNTED - HOUSING B
Dimensions not given are the same as Bushing Mounted.
9.52
(.375)
27.68 ± 0.25
(1.090 ± .010)
1.19
DIA.
(.047)
4 PLCS.
16.0
2.54
(.100) (.630)
2 PLCS.
CHANNEL A
CHANNEL B
COMMON
ECW - Digital Contacting Encoder
How to Order
PART NUMBERING SYSTEM
E C W 1 J
-
B 2 4
- B C 0 0 2 4 L
RoHS IDENTIFIER
Code Description
L
Compliant
Blank Non-Compliant
Code Rotational Life
C
200,000 Revolutions
PERFORMANCE CODE
Code Detents Cycles/Rev.
E0006
0
6
E0009
0
9
E0012
0
12
E0024
0
24
E0036
0
36
B0012
12
12
C0006
6
24
C0024
24
D0009
36
9
BUSHING CONFIGURATION
Code Description
W
9 mm x 1/4 " Length. Threaded M9x0.75
L
9 mm x 3/8 " Length. Threaded M9x0.75
(Use B shaft only.)
T
9 mm x 1/4 ". No Thread.
SWITCHING CONFIGURATION (In Detent Position)
Applies to performance codes B0012 and C0024
only, use code "0" for all other performance codes.
Code Description
0
Not Applicable
1
Normally Open
HOUSING TERMINAL CONFIGURATION
(X indicates “Equipped With”
Code
A B C D E F G* H K
Features
X X
X
X
Terminal Cover
X X
X
X
Rear-Facing Terminals
X X
X
Solder Holes
X
X X X
PCB Bracket
X
X
X X
X
Hardware Included
X
Snap-In Mount
X X
Forward-Facing Terminals
ANTI-ROTATION LUG POSITION
Code Description
J
9:00 Position
D
None
*Bushing code T only.
SHAFT STYLE (See Outline Drawing for Details)
Code Description
B
Plain with Inserted Slot (1/4 " Dia.)
C
Single Flatted (1/4 " Dia.)
R
Plain with Inserted Slot (6 mm Dia.)
Y
Split Shaft Version (.185 " Dia.)
J
Flatted Shaft (3/16 " Dia.)
The sample part number demonstrates the identification
code for Bourns contacting encoders.
Boldface features are Bourns standard options. All others
are available with higher minimum order quantities.
SHAFT LENGTH (FMS)
Code
16
20
24
28
32
36
19
22
24
Available
Description
Shaft Styles
1/2 " Length
B
5/8 " (15.9 mm) Length
J
3/4 " (19 mm) Length
B, C, J, Y
7/8 " (22.2 mm) Length
B, C, J, Y
1 " (25.4 mm) Length
B, C, J, Y
1-1/8 " (28.6 mm) Length B, C, J, Y
Metric
19 mm Length
R
22 mm Length
R
24 mm Length
R
REV. 09/09
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications