4
Alarm Messages- Cause and Remedy
4.1 System alarms
Page 70
Docu-No.: 0590020601-EN Rev. 1.6.0
06 WT PROC
FAILURE
• SFT(s) failed.
• Serial communication to the load cell
interrupted.
• f = SFT internal failure. communica-
tion OK.
• t = No communication from the SFT
to the controller board.
• ?= Not valid answer from SFT.
Locate which SFT has failed on the
<SFTs> line in the <SCALE>
Menu, <SFT> sub-menu.
07
INCORRECTNUM.S
FT
• Number of SFTs found during
polling does not equal that required.
Check <SFT REQUIRED> number
is valid. See <SCALE> menu,
<SFT> sub-menu.
Check for all SFTs being
operational.
08 BAD SFT
STATUS
• SFT is showing an incorrect status.
Replace SFT if problem persists.
09 NO MDU FOUND
• The KCM CPU did not find a motor
drive on the internal channel on
power-up.
Check drive pcb LEDs for correct
function.
Check Internal channel
connections.
Replace drive or CPU pcb.
10 MOTOR ALARM
• The KCM CPU lost the motor drive
on the internal channel while in
operation.
Check drive pcb LEDs for correct
function.
Check Internal channel
connections.
Replace drive or CPU pcb.
11
MDU SERIAL
TIMEOUT
• Motor drive has lost communication
with the KCM CPU and then turns off
all digital outputs and shuts of drive
power.
Check Internal channel
connections.
Replace drive or CPU pcb.
12 MDU THERMAL
OVL
• Drive temperature has been
exceeded > 75 deg C. Drive stops.
Reduce operating temperature
13 MDU SPEED
DEV
• No speed feedback signal is present
when motor is asked to run.
• Speed deviation from target >
5
rpm
• Wrong motor voltage programmed.
Check speed pick-up for operation
and replace if necessary.
Check speed pick-up wiring and
power connections.
Check programming.
Replace drive.
Check motor.
Alarm Num- Alarm
Cause
Remedy
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