Inovance MD500T75G - Page 54

3. Electrical Installation MD500 User Manual
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In the SINK wiring mode, do not connect the 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 the digital input. The diode
characteristics must satisfy the following requirements:
ƕ Forward current rating If: >10 mA
ƕ )RUZDUGYROWDJHGURS9I9
Figure 3-14 Parallel connection of DI terminals in SINK mode
0V
DI1
OP
+24V
+24V
2.4k
3.3Ȏ
NPN
Signal
External controller
Control board of AC drive 2
+VCC
COM
DI1
OP
+24V
2.4k
Control board of AC drive 1
COM
2. SOURCE wiring
0V
DI5
DI1
OP
+24V
+24V
2.4k
2.4k
3.3Ȏ
PNP
Signal
External controller AC drive control board
+VCC
COM
7RXVHWKH6285&(ZLULQJPRGHUHPRYHWKHMXPSHUEHWZHHQWKH9DQGWKH23WHUPLQDOV&RQQHFW9WRWKHFRPPRQ
port of the external controller, and connect the OP terminal to the COM terminal.
,I\RXLQWHQGWRXVHDQH[WHUQDOSRZHUVXSSO\ZLWKWKH6285&(ZLULQJPRGHUHPRYHWKHMXPSHUEHWZHHQWKH9DQGWKH
OP terminals. Connect the external power 0V to the OP terminal, and the positive side of the external power +24V to the
corresponding DI terminal via the contact on the external controller.
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