Trane TR200, BACnet Option Module instruction manual parameter

How to Control the Adjustable Frequency

Drive

Adjustable Frequency Drive Feedback to Network

The BACnet option provides several output variables (NVOs) to the network, containing important adjustable frequency drive, motor and I/O feedback data. The BACnet option transmits bound network variables only and sends feedback data when there is a change in value.

Influence of the digital input terminals upon the drive control mode, par.8-50Coasting Select to par.8-56Preset Reference Select

The influence of the digital input terminals upon control of the adjustable frequency drive can be programmed in par.8-50Coasting Select to par.8-56Preset Reference Select.

NOTE

par.8-01Control Site overrules the settings in parameters 8-50 to 8-56and Terminal 37, Safe Stop overrules any

parameter.

Each of the digital input signals can be programmed to logic AND, logic OR, or to have no relation to the cor- responding bit in the control word. In this way, a specific control command, i.e., stop / coast, can be initiated by the serial communication bus only, serial communication bus AND Digital Input, or serial communication bus OR digital input terminal.

CAUTION

In order to control the adjustable frequency drive via BACnet, par.8-50Coasting Select must be set to either Bus [1], or to Logic AND [2] and par.8-01Control Site must be set to Digital and ctrl. word [0] or Controlword only [2].

More detailed information and examples of logical relationship options are provided in the Troubleshooting chapter.

TR200 BACnet 5-15