Cable Arrangement; Insulation Inspection - INVT Goodrive270 Series Operation Manual

Goodrive270 series VFD for fan and pump
TLK terminal brand: KST (The model varies with the brand.)
SQNBS narrow-head terminal brand: KST (The model varies with the brand.)
Note:
 If you select a cable model larger than a recommended model in the table, check whether the
wiring terminal width exceeds the allowed width in 4.3.2 Main circuit terminal diagram.
 If yes, select an SG narrow-head terminal and matching cable since an SG narrow-head terminal
has smaller width.
 The cables recommended for the main circuit can be used in scenarios where the ambient
temperature is lower than 40° C, the wiring distance is shorter than 100m, and the current is the
rated current.
 The terminals (+) and (-) are used by multiple VFDs to share the DC bus.
D.4.4 Cable arrangement
Motor cables must be arranged away from other cables. The motor cables of several inverters can be
arranged in parallel. It is recommended that you arrange the motor cables, input power cables, and
control cables separately in different trays. The output dU/dt of the inverters may increase
electromagnetic interference on other cables. Do not arrange other cables and the motor cables in
parallel.
If a control cable and power cable must cross each other, ensure that the angle between them is 90
degrees.
The cable trays must be connected properly and well grounded. Aluminum trays can implement local
equipotential.
The following figure shows the cable arrangement.
Input power cable
Min. distance: 200 mm
Control cable
D.4.5 Insulation inspection
Check the motor and the insulation conditions of the motor cable before running the motor.
1. Ensure that the motor cable is connected to the motor, and then remove the motor cable from the
U, V, and W output terminals of the VFD.
Figure D-3 Cable routing distance
-350-
Optional peripheral accessories
Motor cable
Min. distance:
Power cable
300 mm
Motor cable
Min. distance: 500 mm
Control cable