Electrical Installation
‑162‑
Figure 8‑39 Sink wiring mode
The internal 24 V power supply of the drive is the most commonly wiring method.
In the sink wiring mode, short the OP and 24V terminals of the drive, and connect
the COM terminal of the drive to the 0V terminal of the external controller, as
shown in the following figure.
If an external 24 V power supply is used, remove the jumper between +24V and OP.
In addition, connect the 24 V positive electrode of the external power supply to the
OP terminal. The current flows out of the DI and flows back to 0V of the external
power supply via the external controller contact.
In the mode, the DIs of different AC drives cannot be connected in parallel.
Otherwise, the DI may malfunction. If DIs of different AC drives must be connected
in parallel, connect the anode of a diode to the DI in series and the diode needs to
satisfy the following requirement: IF > 40 mA and VR > 40 V, as shown in "
Figure 8–
40 Parallel connection of DIs of multiple AC drives in the sink mode
"
on page 163
.
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