Omron S8VK-C24024

The R88A-CA1GxxxSF (without brake), R88A-CA1GxxxBF (with brake) and R88A-CA1GExxBF (extension)

power cables are intended to be used with the following 1S servo motors:

- R88M-1L(4K0/5K0)30C-xS2

- R88M-1M(4K0/5K5)15C-xS2

The wire section has been optimized for the motor and the combination is suitable even in the limit

conditions of ambient temperature and current.

The power cable increases its temperature due to Joule’s eect and, in normal conditions, the

heat produced is dissipated by natural convection, so the cable temperature remains below its

maximum temperature (115ºC).

However, when you use several motors in the same installation and their power cables travel together

through the same duct, heat dissipation by natural convection is reduced due to mutual inuence

and the cable might exceed its maximum temperature.

If your arrangement results in NG, the power cable might reach excessive temperatures. The

alternatives to build a proper installation are as follows:

- Split the power cables in 2 or more ducts

- Use a bigger duct where you can guarantee a bigger cable separation (increasing ‘S’ factor)

- Use the R88A-CA1H power cable instead of R88A-CA1G. It has a bigger section, so it produces

 less heat. With this cable there are no limitations in the duct conguration

In case you have a doubt or a dierent conguration, please contact your Omron representative.

*1. Connect the cable to the servo drive enclosure using the shield clamp.

*2. PE and shell are set in the connectors at Servo motor’s side.

*1. Connect the cable to the servo drive enclosure using the shield clamp.

*2. PE and shell are set in the connectors at Servo motor’s side.

Below you will nd 3 cases. The conditions for the case evaluation are as follows:

- All motors are of the same size

- All motors work at 100% load (working at rated motor torque in average)

- Ambient temperature is the maximum specied

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