MD600 Series Compact AC Drive Hardware Guide-EN-B06.PDF - 第76页
Wiring ‑75‑ ● Source wiring Figure 6‑11 Source wiring In the source wiring mode, you can only use the external 24 V power supply. To use the external power supply, set the DIP switch S4 to NC (OP unconnected), connect th…
Wiring
‑74‑
● Sink wiring
Figure 6‑9 Sink wiring
To use the internal 24 V power supply of the drive, which is the most commonly wiring
method, set the DIP switch S4 to 24V (short the OP and 24V terminals), and connect
the COM terminal of the drive to the 0V terminal of the external controller.
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
requirement: IF > 40 mA and VR > 40 V, as shown in
"Figure 6–10 Parallel connection
of DIs of different AC drives in sink wiring mode
"
on page 74
.
Figure 6‑10 Parallel connection of DIs of different AC drives in sink wiring mode
Wiring
‑75‑
● Source wiring
Figure 6‑11 Source wiring
In the source wiring mode, you can only use the external 24 V power supply. To use
the external power supply, set the DIP switch S4 to NC (OP unconnected), connect the
OP terminal of the AC drive to the 0V terminal of the external controller, and connect
the anode of the 24 V external power supply to the DI through the control contact on
the external controller.
DO wiring
To use the DO terminal to drive a relay, connect a snubber diode to both ends of the relay
coil. Otherwise, it may cause damage to the 24 VDC power supply. Ensure that the driving
capacity does not exceed 50 mA.
Wiring
‑76‑
Figure 6‑12 Wiring between DO and relay
Connect the snubber diode with the polarity placed correctly. Otherwise, the DO circuit
will be damaged upon the DO output.
DO: Optocoupler isolation; unipolarity open collector output
Output voltage range: 0 V to 24 V
Output current range: 0 mA to 50 mA
The DO is a single-polarity terminal and can be wired only in the following way.
The DO does not require the internal 24 V power supply.