Inovance MD500 Series User Manual

3. Electrical Installation
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Wiring of DI1 to DI5
● SINK wiring
Figure 3-12 Wiring in SINK mode
0V
DI5
DI1
OP
+24V
NPN
Signal
External
controller
MD500 drive
control board
+VCC
COM
0V
DI5
DI1
OP
+24V
NPN
Signal
Internal 24 V power supply is applied.
External 24 V power supply is applied.
MD500 drive
control board
External
controller
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
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
Figure 3-13 Parallel connection of DI terminals in SINK mode
0V
DI1
OP
+
24V
+24V
NPN
Signal
External
controller
+VCC
COM
DI1
OP
+24V
Control board of
MD500 drive 1
COM
Control board of
MD500 drive 2

Inovance MD500 Series Specifications

General

Brand	Inovance
Model	MD500 Series
Category	Inverter
Language	English