OE Max Controls CSDJ Plus User Manual page 35

2-12
Wiring
Wiring Precautions
Using the high-speed controller with 3000:1 of precision, servo drive
handles signals below small mV. Pay attention to the conditions listed
below when wiring.
1. Multi-core twisted pair with overall wire shield must be used for the
signal wire and position signal (CN1, CN2, CN3 connection wire).
Thus use electric wire with the thickness of at least AWG26.
Especially when the input of the position command in open
collector method is provided by the host controller, multi-core twist
pair shield wire must be used. Otherwise it may cause error in
operations such as position shifting due to external noise.
2. If possible, use thick electrical wire for grounding and one point
must be grounded. However, apply the class higher than 3 class.
When isolating the motor and mechanical parts, ground the motor.
3. The maximum length of the wire for command input cable (CN1) is
3m and for the position sensor and motor power cable, its
maximum length is 20m. Cut off excessive wires and use shortest
wiring distance if possible.
* Contact the agency for long-distance wiring.
4. Pay attention to the following cases to prevent errors due to noise
when operation the system.
- Line filter, servo drive, motor, input devices should be installed
as closely as possible.
- Attach surge absorbing circuit for relay, wiring circuit breaker,
electronic contactor, and etc. Refer to Noise Protection.
5. The heat sink of the servo drive can rise up to around 80℃ Avoid
the devices or wiring, which can be easily effected by the heat, from
the servo drive.
6. Open unused signals and terminals. The system may be affected by
the external noise if unused circuit is wired.
7. If the cable is not fixed in place and moves, utilize separate movable
cable. The life span of the cable is around 2 years. Change the cable
every 2 years.