Chapter 2
2-46
Standard Models and Specifications
2-6-2 Servomotor Cables
A Servomotor Cable connects a Servomotor to the Servo Driver and is available in either of
two types: Separate Cables and Integrated Cables. The Integrated Cables include the
encoder cable and power cable. Select a Cable to match the Servomotor being used. The
maximum distance between the Servomotor and the Servo Driver is 20 meters.
Note: Use a robot cable if cable flexibility is required.
● Robot Cable Bending Durability
A Robot Cable uses materials that enable a service life of 20 million bendings minimum under the fol-
lowing conditions for the minimum bending radius (R) or larger.
Note 1. The service life data on bending durability consists of test values. Use this data only as ref-
erence values, and allow margin in actual application.
Note 2. The bending durability is the number of times that the Cable can be bent without breaking
or other damage occurring that affects the sheath functionality when the conductors inside
the cable are conducting electricity. The bending durability does not apply to the shield
breaking.
Note 3. Mechanical failure, ground faults, or other problems may occur due to damaged insulation if
the Cable is used with a radius smaller than the minimum bending radius. Contact your
OMRON representative if the Cable will be used with a radius smaller than the minimum
bending radius.
● Power Cables
@: 003 to 020
● Encoder Cables
@: 003 to 020
Integrated
cables
Separate cables
Model Standard cable
models
Robot cable models
For Servomotors
without brakes
R7A-CEA@@@S Power cable R88A-CAWA@@@S R88A-CAWA@@@SR
Encoder cable R7A-CRA@@@C R7A-CRA@@@CR
For Servomotors
with brakes
R7A-CEA@@@B Power cable R88A-CAWA@@@B R88A-CAWA@@@BR
Encoder cable R7A-CRA@@@C R7A-CRA@@@CR
Model Minimum bending radius
(R)
For Servomotors
without brakes
R88A-CAWA
@@@SR
55 mm
For Servomotors
with brakes
R88A-CAWA
@@@BR
55 mm
Model Minimum bending radius
(R)
R7A-CRA@@@CR 46 mm
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