VLT® Serie 2800 and VLT® Serie 6000 Modbus RTU
å VLT 2800 and VLT 6000 with Modbus RTU
The adjustable frequency drive communicates in
Modbus RTU format over an EIA-485 (formerly
RS-485) network. Modbus RTU allows access to the
drive’s Control Word and Bus Reference.
The Control Word allows the Modbus master to control
several important functions of the drive:
• Start
• Stop the drive in several ways:
Coast stop
Quick stop
DC Brake stop
Normal (ramp) stop
• Reset after a fault trip
• Run at a variety of preset speeds
• Run in reverse
• Change the active setup
• Control the drive’s two built-in relays
The Bus Reference is commonly used for speed control.
It is also possible to access the parameters, read
their values, and, where possible, write values to
them. This permits a range of control possibilities,
including controlling the drive’s setpoint when its
internal PID controller is used.
MG.10.S1.22 - VLT is a registered Danfoss trademark
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