Rs485 Serial Communication; Connecting And Setting Up Rs485; Installation Checklist - Danfoss VLT Decentral Drive FCD 302 Operating Manual

VLT® Decentral Drive FCD 302
Operating Guide

4.10.8 RS485 Serial Communication

• Use shielded serial communication cable.
• See 4.3 Grounding for proper grounding.
• 2 communication protocols are internal to the drive:
- Danfoss FC.
- Modbus RTU.
•
Functions can be programmed remotely using the protocol software and RS485 connection or in parameter group 8-** Commu-
nications and Options.
• Selecting a specific communication protocol changes various default parameter settings to match the specifications of that pro-
tocol and makes more protocol-specific parameters available.
• Option cards for the drive are available to provide extra communication protocols. See the option card documentation for in-
stallation and operating guides.

4.10.8.1 Connecting and Setting Up RS485

Procedure
1.
Connect RS485 serial communication wiring to terminals (+)68 and (-)69.
61
68
69
Illustration 21: Serial Communication Wiring Diagram
2.
Select the protocol type in parameter 8-30 Protocol.
3.
Set the drive address in parameter 8-31 Address.
4.
Set the baud rate in parameter 8-32 Baud Rate.

4.11 Installation Checklist

Before completing installation of the unit, inspect the entire installation as detailed in
completed.
Table 10: Start-up Checklist
Inspect for Description
Auxiliary equip-
• Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers located on the
ment
input power side of the drive, or the output side to the motor. Examine their operational readiness
and ensure that they are ready in all respects for operation at full speed.
• Check function and installation of any sensors used for feedback to the drive.
• Remove power factor correction caps on motor(s), if present.
Cable routing Ensure that input power, motor wiring and control wiring are separated or in 3 separate metallic con-
duits for high-frequency noise isolation.
32 | Danfoss A/S © | 2020.07
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RS485
Electrical Installation
Table 10. Check and mark the items when
AQ267036816112EN-000101 / 130R0208
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