ZGR SOLAR STR 250
Operation manual
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33
There are four RS485 communication terminals COM1, COM2, COM3 on the bottom of the inverter. Please
choose according to the actual situation.
1)
Strip the protection layer and insulation layer by appropriate length (Fig. 4-45).
Fig. 4-45 Strip the protection layer
2)
Loosen the swivel nut of the communication terminal and select an appropriate seal according to cable
outer diameter (5 - 8 mm). Lead the cable through the swivel nut and seal successively (Fig. 4-46).
Fig. 4-46 Lead the cable through the swivel nut
3)
Secure the cable to the terminal base (Fig. 4-47).
Fig. 4-47 Secure the cable
4)
Insert the terminal base into the corresponding terminal (Table 4-12).
No DEFINITION
1
RS485 A IN, RS485A differential
2
RS485 B IN, RS485B differential
3
RS485 A OUT, RS485A communication signal -
4
RS485 B OUT, RS485B communication signal -
Table 4-12 Terminal definition
5)
Pull the cable gently to make sure it is secured, tighten the swivel nut clockwise (Fig. 4-48).
