7.5 Alarm Detection Capabilities
75
Power Supply Unit
INSTRUCTION MANUAL
7
Table 7-6 Table of Alarms
Alarm
Code
LCD Display Cause Protective Action
11 11=TD COUNTER LIMIT
Counts of the high speed touch-
down counter exceeded the
specified number.
Start-up impossible
(detected during power
supply self-diagnostics)
12 12=PF COUNTER LIMIT
Counts of the power failure touch-
down counter exceeded the
specified number.
13 13=WRONG TMP MODEL
The combination of the pump and
power supply is wrong.
14 14=AC LOW VOLTAGE Fall in AC input power voltage.
Regenerative braking
15 15=POWER FAILURE Power failure.
16 16=TMP:OVERLOAD
After accelerating to 80% of the
designated speed or low-speed
setting, the speed dropped below
80% due to overloading etc.
Deceleration
21 21=TMP TEMP/MB CABLE
Increased pump drive motor
temperature.
MB cable is not connected.
Free run
(motor stop)
22 22=TMP:SENSOR ERROR
Pump rotation signal could not be
detected correctly.
23 23=EI:MOTOR OVERCURR Overcurrent ran through the motor.
24 24=TMP PUMP TEMP Pump Temperature
31 31=EI:BR OVERTEMP
Increased temperature inside power
supply unit.
32 32=EI:DC-DC OVERTEMP
Increased temperature inside power
supply unit.
33 33=EI:FAN ERROR
Power supply cooling fan has
stopped.
34 34=EI:INV. OVERCURR Overcurrent ran through the motor.
35 35=EI:INV. OVERVOLT
Defective circuit in the power
supply.
36 36=EI:DC-DC LOW VOLT
Defective circuit in the power
supply.
Regenerative braking
37 37=EI:DC-DC OVERCURR
Defective circuit in the power
supply.
Deceleration
38 38=EI:DC-DC OVERVOLT
Defective circuit in the power
supply.
43 43=EI:PARAM ERROR Stored parameters are not correct.
Start-up impossible
(detected during power
supply self-diagnostics)
44 44=EI:CPU ERROR Error in the CPU for inverter control.
Free run
(motor stop)
45 45=EI:BRAKE OVERTIME
Pump does not stop within the
specified time after the stop
operation.
46 46=MOTOR OVERSPEED Pump rotation speed is too high.
47 47=EI:R-SPEED ERROR
Pump rotation speed cannot be
detected.
To Next Page
