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ACTFAULT Parameter (S300-S700)

ASCII - Command ACTFAULT    
Syntax Transmit ACTFAULT [Data]    
Syntax Receive ACTFAULT <Data>   Available in  
Type Variable rw   MMI Yes
ASCII Format Integer8   CANBus Object Number 3503 (hex)
DIM -   PROFIBUS PNU 1603 (dec) IND = 1 (dec)
Range 0, 1   DPR 3 (dec)
Default 1    
Opmode All   Data Type Bus/DPR Integer8
Drive State Disabled + Reset (Coldstart)   Weighting  
Start Firmware 1.0    
Configuration Yes   Last Change of this Object 2.8
Function Group drive configuration   EEPROM Yes
Short Description Active fault mode

Description

The ACTFAULT command is used to specify the response of the drive if a fault occurs.
ACTFAULT=0: If a fault occurs, the output stage is immediately inhibited, the drive coasts down.
ACTFAULT=1: If a fault occurs, an Emergency Stop procedure is initiated, that consists of the following steps.

  1. Switch over the controller mode to velocity control (OPMODE=0)
  2. Change the braking ramp for the velocity control loop (DEC) to the emergency stop ramp (DECSTOP)
  3. Set the internal velocity setpoint to 0 (before the ramp generator).
  4. Start a timer (with time-out = 5 seconds)

As soon as the internal velocity setpoint (after the ramp generator) has reached 0, the output stage is inhibited and the original controller mode is re-activated. This will also happen if the time-out occurs before the velocity setpoint has reached 0.

Comments:
In some critical error situations, the output stage is disabled immediately. Then the setting ACTFAULT = 1 has no function (see description ERRCODE *).

With the parameter ERRCNFG can be enforced on individual fault the immediate blocking of the amplifier. The setting ACTFAULT = 1 then has no function.