Electrical installation
17
Electrical installation
Overview
This chapter contains:
• general cabling instructions
• instructions for setting the bus termination
• instructions for connecting the module to the RS-485 network.
WARNING! Before installation, switch off the drive power supply.
Wait five minutes to ensure that the capacitor bank of the drive is
discharged. Switch off all dangerous voltages connected from
external control circuits to the inputs and outputs of the drive.
General cabling instructions
Arrange the bus cables as far away from the motor cables as
possible. Avoid parallel runs. Use bushings at cable entries.
RS-485 connection
RS-485 cable is connected to connector X1 on the FMBA-01
Modbus Adapter module.
X1 Description
1 SHLD Bus cable shield. Connected internally to
GND_B via an RC filter and directly to
CH_GND (chassis).
2 DATA_B Data positive
3 DATA_A Data negative
4 GND_B Isolated signal ground
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