
HOA Keypad Display
Fault Name
oL4
Overtorque Detection 2
The current has exceeded the value set for Overtorque Detection 2 (L6-05) for longer than the allowable time
(L6-06).
oL7
High Slip Braking oL
The output frequency stayed constant for longer than the time set to n3-04 during High Slip Braking.
oPr
External HOA Keypad Connection Fault
The HOA keypad has been disconnected from the drive.
Note:
An oPr fault will occur when all of the following conditions are true:
• Output is interrupted when the keypad is disconnected (o2-06 = 1).
• The Run command is assigned to the operator (b1-02 = 0 and LOCAL has been selected).
ov
Overvoltage
Voltage in the DC bus has exceeded the overvoltage detection level.
• For 200 V class drives: approximately 410 V
• For 400 V class drives: approximately 820 V (740 V when E1-01 is less than 400)
• For 600 V class drives: approximately 1040 V
PF
Input Phase Loss
Drive input power has an open phase or has a large imbalance of voltage between phases. Detected when L8-05 is
set 1 (enabled).
PoC
Pump Over Cycle
rF
Braking Resistor Fault
The resistance of the braking resistor is too low.
rH
Braking Resistor Overheat
Braking resistor protection was triggered.
Fault detection is enabled when L8-01 = 1 (disabled as a default).
rr
Dynamic Braking Transistor
The built-in dynamic braking transistor failed.
SC
IGBT Short Circuit or Ground Fault
SEr
Too Many Speed Search Restarts
The number of Speed Search restarts exceeded the value set to b3-19.
SPL
Suction Pressure Loss
Suction Pressure Loss
Wire-break detection for suction pressure.
TdE
Time Data Error
THo
Thermistor Disconnect
The thermistor that detects motor temperature has become disconnected.
TIE
Time Interval Error
TIM
Time Not Set
TLGI Geothermal Input
Temperature Lost Geothermal Input
The geothermal input is not present.
UL3
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the allowable time
(L6-03).
UL4
Undertorque Detection 2
The current has fallen below the minimum value set for torque detection (L6-05) for longer than the allowable time
(L6-06).
UL6
Motor Underload
The load has fallen below the underload curve defined in L6-14.
UnbC
Current Unbalance
Current flow has become unbalanced.
i.6 Troubleshooting
YASKAWA TOEP YAIP1W 02E YASKAWA AC Drive - iQpump1000 Installation & Start-up Guide
77
Summary of Contents for CIMR-PW*A Series
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