Installation
42
Connect Communication
REFUsol 20K...33K-2T
982079 | 05 | 2021-03
Fig. 39: Pin assignment RJ45 plug
5. Insert the RJ45 connector into the RS485 port of the
inverter until it locks securely.
6. Check secure connection of the RJ45 plug.
7. Fit the RS485 and digital input cover.
8. Tighten the union nut of the PG screw connection.
9. Check the tightness and the strain relief of the PG
screw connection and cover.
4.11.2Connect Digital Inputs IN1 to IN4
1. Remove the RS485 and digital input cover on the
inverter.
2. Slightly loosen the union nut of the PG screw con
-
nection.
3. Remove the blind plug from the PG gland and feed
the shielded network cable through the cable gland
and seal.
4. Plug in the terminal strip for the digital inputs.
5. Assemble the network cable and connect the wires
to the digital inputs of the terminal strip IN1, IN2,
IN3, IN4 and GND.
6. Fit the RS485 and digital input cover.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
IN1
IN2
IN3
IN4
GND
DRM0
100%
60%
30%
0%
Summary of Contents for 20K-2T
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