68
SECTION 9
TROUBLESHOOTING
Table 9-6
Table of Alarms
Table 9-7
Table of Warnings
Alarm
Code
Alarm Name
Possible Cause
Protective Action
15
POWER FAILURE
Power failure or reduction in the power supply
voltage.
Free run
(motor stop)
16 TMP:OVERLOAD
After
accelerating to 80 % of the designated speed
or low-speed setting, the speed dropped below 80 %
due to overloading etc
21
TMP:TEMP/MB CABLE
Increased pump drive motor temperature.
23
EI:MOTOR OVERCURR
Overcurrent ran through the motor.
26
TMP:BRG TEMP
Increased pump bearing temperature.
30
EI:CONT. TEMP ERR
Increased temperature inside the control system
34 EI:INV.
OVERCURR
Overcurrent ran through the motor.
35 EI:INV.
OVERVOLT
Increase the 24 VDC power supply.
36
EI:DC-DC LOW VOLT
Decrease the 24 VDC power supply.
43
EI:PARAM ERROR
Stored parameters are not correct.
44
EI:CPU ERROR
Error in the CPU for inverter control
46
MOTOR OVERSPEED
Pump rotation speed is too high.
47
EI:R-SPEED ERROR
Pump rotational speed cannot be detected.
48
EI:ACCEL OVERTIME
Pump does not accelerate to 80 % of the designated
speed or low-speed setting within the specified time
after start-up.
49
TMP:CAN NOT START
Pump fails to rotate within 30 seconds after start-up.
Alarm
Code
Alarm Name
Possible Cause
Protective Action
50 TMP:BRG
TEMP
WARN. Increased
pump bearing temperature
Operation
continued.
80
EI:CONT.TEMP.WARN
Increased temperature inside power supply unit.
94
MB:AIR RASH B
Atmospheric penetration.
99 MAINTENANCE
TIME
Maintenance
call timer reaches its set time.
Summary of Contents for UTM300B
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Page 70: ...GAS PURGE 7...
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