Badger Meter SRD/SRI Valve Positioners - Manual (Page 71)

Fault Possible Cause Solution
Unstable behavior,
position control circuit
oscillates
Autostart incomplete,
therefore, control
parameters not suitable
Carry out complete Autostart, see “Menu 2: Autostart”
Small actuator volume but
high air capacity
Increase damping at pneumatic output, see
“Menu 6: Parameter for Position controller” reduce gain (P
parameters)
Friction on valve packing
too great
Loosen packing gland slightly or replace
IP module or Pneumatic
amplifier defective
Change module, pneumatic amp
Actuator leakage Check the actuator and repoint
Actuator reacts too
sluggishly
Air capacity insufficient Attach booster
Gain set too low Increase damping at pneumatic output, see
“Menu 6: Parameter for Position controller”
Positioning time T63 set too
high
Reduce positioning time, see
“Menu 6: Parameter for Position controller”
No communication
possible
Input voltage too low Eliminate voltage drop
Faulty protocol,
communicator and device
type do not match
Check configuration of devices
Wrong electronics unit Change device
For tuning controller parameters see “Menu 6: Parameter for Position controller”
Troubleshooting Guide
Page 71 August 2014 POS-UM-00010-EN-03