SJ200 Inverter
Connecting the Inverter to ModBus
Follow the steps in this section to connect the inverter to the ModBus network.
1.Keypad Removal - The inverter keypad uses the serial communications interface connector on the front of the inverter. To access the RJ45 modular connector, you will need to remove the keypad. Refer to “Inverter Keypad Removal and Installation” on page
2.Modular Interconnect Removal - With the keypad removed, locate the RJ45 modular interconnect, the clear plastic connector in the opening as shown below. Press downward on the locking tab at the top of the connector, releasing it for removal. Be sure to keep it in a secure place; you may need it in the future for placing the keypad on the inverter again. The RJ45 modular jack that remains will new accept the serial communication cable.
RJ45 modular interconnect /
communications
connector
Keypad bay
B Appendix
3.Cable Wiring - The inverter communications port uses RS485 differential transceiver. The
pinout is shown to the right and listed below. Be sure the cable connection you make matches the diagram.
|
|
|
|
| SJ200 | ||
Pin | Symbol | Description | |||||
|
|
|
| ||||
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
1 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
2 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
3 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
4 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
5 | SP | Send/Receive data Positive |
|
|
|
| |
|
|
|
|
|
|
| |
6 | SN | Send/Receive data Negative |
|
|
|
| |
|
|
|
|
|
|
| |
7 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
8 | — | Not used. Do not connect |
|
|
|
| |
|
|
|
|
|
|
| |
8 7 6 5 4 3 2 1
S S 
Not used N P Not used