FMS Fault Correction
Three-point step control output (B)
Aids
B1
Motor does not move
Check whether "OPEN" and "CLOSE" relays pull on when the
switch (4) is operated.
If not:
Make sure that there is not a fault
(recognisable from the fault LED)
Check F2 fuse (on power supply front panel)
Check FMS relay-module connection
If so:
Check whether "OPEN" and "CLOSE"
signals are present on motor
Check fuse on relay-module
Check voltage supply circuit of the motor
_____________________________________________________________________________________________________
B3
Fault
151
201
The control element may not have reached its set-point value rapidly enough.
191
202
Possible especially on control elements that are activated separately and
192
203
then have to run their full travel (e.g. re-circulation damper or flue gas damper
193
204
or in the case of flying curve switching).
194
205
195
Increase control speed on motor (if possible)
or
Limit control range by means of limit switch (in order to save running time)
otherwise
Increase parameters for monitoring bands (if admissible)
(possible only for level 2)
_____________________________________________________________________________________________________
B4
Fault
171
181
Although the control element is in the monitoring band it does not reach
172
182
the dead band.
173
183
174
184
Increase pulse length for the channel (parameter 730 to parameter 734)
175
185
or
limit switch is too close the programmed top or bottom point.
Adjust limit switch
___________________________________________________________________
After adjusting the limit switch the FMS must read in the range limits again,
see page 116
.
___________________________________________________________________
95
