K&R GT600-4T132G User Manual page 68

3. Electrical Installation
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Wiring of DI1 to DI5
●
SINK wiring
Figure 3-21 Wiring in SINK mode
+24V
+VCC OP
Signal
DI1
NPN
DI5
0V COM
External
controller
Internal 24 V power supply is applied.
Applying internal 24 V power supply is the most commonly used wiring mode. In this
mode, short terminals +24V and OP and connect COM to external power 0V.
To apply external 24V power supply, remove the jumper between terminals +24V
and OP, and between terminals COM and CME. Connect positive side of external
power 24V to OP, and external power 0V to corresponding DI terminal via contact on
external controller.
CAUTION
Figure 3-22 Parallel connection of DI terminals in SINK mode
External
controller
GT600 drive
control board
In SINK mode, do not connect DI terminals of different AC
drives in parallel, otherwise, a digital input fault will occur. If it
is necessary to connect different AC drives in parallel, connect
a diode in series at digital input. The diode characteristics must
satisfy the following requirements:
●
IF: > 40 mA
●
VR: > 40 V
+24V
+24V
+VCC
OP
Signal
DI1
COM
NPN
+24V
OP
DI1
0V
COM
+24V
OP
Signal
DI1
NPN
DI5
0V
GT600 drive
External
control board
controller
External 24 V power supply is applied.
Control board of
GT600 drive 1
Control board of
GT600 drive 2