K-TRON KSU-II/KCM, Programming Instructions Manual

Page: 76 / 121

4 Alarm Messages- Cause and Remedy
4.2 LWF alarms
Page 76 Docu-No.: 0590020601-EN Rev. 1.6.0
4.2 LWF alarms
Process alarms
Cause Remedy
52 FEEDFACT. BAD • Feedfactor is zero or feeding
condition changed so that the
feedfactor exceed the set limit in the
<ALARM> menu <FF DEV LIMIT>.

Enter new feedfactor.

Check feedfactor limit in <ALARM>
menu <FF DEV LIMIT>.

Check feeding condition.
53
SCALE
OVERRANGE • The weight on the scale is above the
scale gross range permitted.

Check the scale for proper
operation.

If LWF, reduce level of refilling -
<REFILL MAX> parameter.
54
SCALE
UNDERRANGE • The weight on the scale is below the
zero or gross weight < 0.

Check the scale and re-tare.
55 NETWT > LIMIT • The material weigh in the hopper is
above the limit set in the <ALARM>
menu. <NW HI LIMIT>.

Check for proper hopper filling.

Check the tare value.

Check for scale or weigh bridge
measurement errors.
56 NETWT < LIMIT • The material weigh in the hopper is
below the limit set in the <ALARM>
menu.<NW LO LIMIT>.

Check for proper hopper filling.

Check the tare value.

Check for scale or weigh bridge
measurement errors.
57 REFILL
EXPIRED • The programmed refilling time
(program parameter <ALARM>
menu, <MAX REFILL TIME> was
exceeded without refilling being
completed.

Check refilling device, increase the
time in program parameter
<ALARM> menu, <ALARM
LIMTS> sub-menu, <MAX REF
TIME> or refill faster if necessary.
58 LOADER
TIMEOUT • Loader hopper is empty

Check loader and material supply.
61
LOW CONTROL
GAIN • Adaptive gain is 10 or below.

Check for excessive PERT values.

Reduce scale disturbances.

Increase operating setpoint.