| CD120 SERIES
INCREMENTAL DRAW WIRE
Introduction
Draw wire sensor assemblies combine a rotary sensor such as an encoder with a spring-loaded retractable cable on a drum. This provides a means to
translate the precision of a rotary encoder into a linear measurement.
Features
• A full 120 inches (10 feet) of measurement capability.
• Wire drum is scaled so that one revolution = 1 foot of measurement.
• Mounting bracket and encoder position can be rotated in 90°
increments to accommodate a variety of installation requirements.
Applications
• Concrete, wood, steel sawing
• Mast height measurement for fork truck AGV’s
• Extension measurement for small cranes
• Flood Control gates
• Hydraulic Cylinder Position
SPECIFICATIONS
Mechanical
Output Signal type
Optical Incremental Encoder in Quadrature with Index
Linearity
+/- 0.05% of full scale
Resolution
Range of Pulses per inch (Ref ordering block)
Cable Type
0.024” (0.60 mm) diameter stainless steel
Cable Tension
2.9 - 4.0 pounds (13 - 18 N)
Enclosure material
Aluminum
Weight
4.4 pounds, (2 Kg)
Electrical
Input Current
100mA (no load), up to 160 mA full load
Input Voltage
5-28 Vdc; Vout=Vin
Connector
M16, 7 pin Connector
M18, 10 pin Connector
SCS, cable Gland Seal
Mating Connector/Cable
31186-18XX, XX = cable length in feet
Drum Circumference
12 inches (304.8 mm)
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Page 1
Enviromental
Enclosure Protection Rating
IP66 with M16 or M18 connector
IP65 with cable Gland Seal
Operating Temperature
-20°C to + 85°C
Storage Temperature
-20°C to + 85°C
Other Specifications
Maximum Velocity of cable
10 m/s
Maximum Acceleration of Cable
7 m/s2
DIMENSIONS
Tolerance, unless otherwise noted:
All dimensions are in inches [mm]
120
4.72
90
3.54
192.5
7.58
127.9
5.03
2.50
3.50
68
2.67
40
1.57
21.5
.85
155
6.10
110
39 4.33
1.54
11
.43
7.6
.30
Holes
137.4
5.41
6.6
2X .26
A
92
3.61
2.4
2X .09
M3 screw
Drainage holes – 4xM3 set screws
(on each side). Remove lowest screw for
drainage of trapped moisture
DETAIL A
SCALE 1 : 1
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CD120 DRAW-WIRE, AVAILABLE FEATURES
All dimensions are in mm
4
34,5
44,5
6,5
50
18
4
8
Standard termination with a captive
washer which accepts a 6 mm (1/4”)
screw
CP termination: Threaded cable
termination is attached to a clevis. The
4 mm diameter clevis pin is provided.
B2: A cleaning brush is factory installed
to wipe away dust and moisture as the
cable retracts
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Example : CD120-500-ABZC-28V/V-M18-B2
ORDERING OPTIONS
CD120
-
500
-
ABZC
-
28V/V
-
M18
-
B2
Family
Draw-Wire Assembly
120 inches maximum travel
Aluminum Housing
Resolution
Note: programmable resolution, OMNI , must use an M18 termination
10 counts per inch to 500 counts per inch (See Table, Below)
Output Type
ABZC = Two Channels in Quadrature + Index and complements = Std
ABZ = Two Channels in Quadrature + Index
ABC = Two Channels in Quadrature plus complements
Check with factory for other output types.
Electrical Options
28V/V = 5 – 28 V in. Vout = Vin
28V/5 = 5 – 28 V in. Vout = 5V regulated
28V/OC = 5 – 28 V in. Vout = Open Collector
Termination
M18 = M18, 10 Pin Connector (used with ABZC)
M18 – 10 = M18 Connector with Mating Cable/Connector Assembly, -10 = 10 foot length. Available lengths are 10, 20, 30, and 50 feet.
M16 = M16, 7 Pin Connector (used with ABC or ABZ)
M16 – 10 = M16 Connector with Mating Cable/Connector Assembly, as above.
SCS-XX = Cable Gland Seal with XX feet of cable. Available lengths (XX) = 10, 20, 30 and 50 feet.
Available Features
BLANK = Standard Termination
B2 = Built-in Cleaning Brush for cable
CP = Clevis Termination
RESOLUTIONS TABLE
Resolution
Distance/ Count
10
0.100 “
25
0.040 “
50
0.020 “
100
0.010”
250
0.004”
500
OMNI*
*Available with M18 termination only
0.002”
Programmable
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PINOUT AND CONNECTION TABLES
The connector style will determine pinouts. For example, an encoder with ABC channels and an M18 connector uses the table to the right.
M16 Connector
Channels Designated in Model Number
M18 Connector
Pin
ABZ
ABC
Pin
Channel
A
A
A
A
A
B
B
B
B
B
C
Z
A
C
Z
D
+V
E
—
D
+V (Supply Voltage)
E
—
B
F
0V (Circuit Common)
F
0V
G
Case Ground (CG)
G
CG
H
A
I
B
J
Z
Wire Color
(22AWG)
Channels Designated in Model Number
ABZ
ABC
ABZC
YEL
A
A
A
BLUE
B
B
B
ORN
Z
—
Z
W-Yel
—
A
A
W-Blu
—
B
B
W-Orn
—
—
Z
RED
+V (Supply Voltage)
BLK
0V (Circuit Common)
GRN
Case Ground (CG0)
WHITE
Shield Drain (Shielded Cable Only)
WAVEFORM DIAGRAM
INDEX GATED WITH B LOW
Z
180°
A
B
Cable Extends
Cable Retracts
AGENCY APPROVALS & CERTIFICATIONS
EN 61000-6-4 and EN 61000-6-2
Page 5
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MOUNTING INSTRUCTIONS
CD120 Mounting Instructions
1. Mount the CD120 mounting plate securely to a stable flat surface using M6 or
1/4” bolts and washers.
2. Attach the draw wire to your moving equipment using the eyelet provided with an
M4, #8 screw or a 3/16” pin. If you have purchased a special termination, then
use the mounting instructions for that wire termination.
WARNING:
• Damage may occur if draw wire is released and allowed to freely retract without
tension.
• Make certain the draw wire path is clear of objects or sharp edges to prevent
cable damage.
• Draw wire should exit as straight as possible. A pulley may be used to redirect it
How to Change Encoder Positioning
1. Remove the four #10-32 hex socket cap screws
and washers from the encoder flange. (5/32 in. hex
driver).
2. Rotate the encoder flange in 90° increments. You
may need to pull it out a little to get it loose enough
to turn.
3. If the encoder is completely removed, you can
rotate the encoder shaft a little to align the driving
gear with the draw wire hub. It should insert with
little or no resistance. Do Not Force the gear into
place.
4. Replace the screws and lock washers and tighten
to 13 in-lb [1.4 N-m].
How to Change the Mounting Plate Position
1. Remove the four M4 hex socket cap screws from the
mounting plate (3 mm hex driver)
2. Align the mounting plate on the side you wish to attach it.
3. Replace the screws and tighten to 13 in-lb [1.4 N-m].
Page 6
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ACCESSORIES
Description
M16 Cable Connector Assembly
When ordered separately. Cable Assembly may be
ordered directly as part of the model number
M18 Cable Connector Assembly
When ordered separately. Cable Assembly may be
ordered directly as part of the model number
Omnicoder® Programming Cable
Ordered Separately
Part Number
MS31186-1610 = 10’
MS31186-1620 = 20’
MS31186-1630 = 30’
MS31186-1650 = 50’
MS31186-1810 = 10’
MS31186-1820 = 20’
MS31186-1830 = 30’
MS31186-1850 = 50’
60031-101
Page 7
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Copyright © 2019 Sensata Technologies, Inc.
Spec. Sheet No. 02323-001 Rev:05/02/19
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