Yaskawa iQpump Micro Quick Start - Manual (Page 80)

Digital Operator
Display
Fault Name
LWL
(LOH20)
Low Water Level
The “Low Water Level” digital input is active (H1-0o = 8F).
MSL
Net Master Lost
(NSL)
Net Master Lost
The MEMOBUS master has been lost
NMS
(NOTSP)
Not Maintaining Setpoint
The setpoint cannot be maintained and P1-17 is set to 0.
nSE
Node Setup Error
A terminal assigned to the node setup function closed during run.
oC
Overcurrent
Drive sensors detected an output current greater than the specified overcurrent level.
oFA00
<1>
Option Card Connection Error at Option Port CN5
Option compatibility error
oFA01
Option Card Fault at Option Port CN5
Option not properly connected
oFA03, oFA04 Option Card Error Occurred at Option Port CN5
oFA30 to oFA43 Communication Option Card Connection Error (CN5)
oH
Heatsink Overheat
The heatsink temperature exceeded the overheat pre-alarm level set to L8-02.
oH1
Overheat 1 (Heatsink Overheat)
The heatsink temperature exceeded the drive overheat level.
oH4
Motor Overheat Fault (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the fault detection level.
• Detection requires setting multi-function analog inputs H3-02 or H3-10 to E.
oL1
Motor Overload
The electronic motor overload protection tripped
oL2
Drive Overload
The thermal sensor of the drive triggered overload protection.
oL3
Overtorque Detection 1
The current has exceeded the value set for Torque Detection Level 1 (L6-02) for longer than the allowable time (L6-03).
oL4
Overtorque Detection 2
The current has exceeded the value set for Torque Detection Level 2 (L6-05) for longer than the allowable time (L6-06).
oL5
Mechanical Weakening Detection 1
Overtorque occurred, matching the conditions specified in L6-08.
oPr
External Operator Connection Fault
The external operator 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 HAND 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)
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
rH
Braking Resistor Overheat
Braking resistor protection was triggered.
Fault detection is enabled when L8-01 = 1 (disabled as a default).
i.7 Troubleshooting
80 YASKAWA TOEP YAIQPM 02B YASKAWA AC Drive - iQpump Micro Quick Start Guide