LED Display
LCD Display
Minor Fault Name
ol4
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).
Cause
Possible Solution
Parameter settings are not appropriate for the
load
Check the settings of parameters L6-05 and L6-06.
LED Display
LCD Display
Minor Fault Name
ou
ov
DC Bus Overvoltage
The DC bus voltage exceeded the trip point.
• For 200 V class drives: approximately 410 V
• For 400 V class drives: approximately 820 V (740 V when E1-01 < 400)
Cause
Possible Solutions
Surge voltage present in the drive input
power.
• Install a DC link choke or an AC reactor.
• Voltage surge can result from a thyristor convertor and a phase advancing capacitor operating on the
same drive input power system.
The motor is short-circuited.
• Check the motor power cable, relay terminals and motor terminal box for short circuits.
• Correct grounding shorts and turn the power back on.
Ground current has overcharged the main
circuit capacitors via the drive input power.
Noise interference causes the drive to operate
incorrectly.
• Review possible solutions for handling noise interference.
• Review section on handling noise interference and check control circuit lines, main circuit lines and
ground wiring.
• If the magnetic contactor is identified as a source of noise, install a surge protector to the MC coil.
Set number of fault restarts (L5-01) to a value other than 0.
LED Display
LCD Display
Minor Fault Name
p
c
y
c
Pump Cycling
Pump Over
Cycle
Pump Over Cycle
Cause
Possible Solution
The pump has exceeded the number of cycles
set in P2-10 in the time set in P2-11 and P2-12
is set to 1 (alarm).
• Set the Pump Over Cycle alarm characteristics in P2-10 and P2-11.
• Drive response to this condition is controlled by P2-12, Over Cycling Mode.
LED Display
LCD Display
Minor Fault Name
rdd
R-DNE-S
o
Remote Drive Disable
Cause
Possible Solution
Terminal S
o
(H1-0
o
= 95) has been closed
for the time set in P4-26, Remote Drive
Disable On-Delay, when P4-25, Remote
Drive Disable Selection, was set to 0 (N.O.).
Remove conditions causing the terminal to close.
Terminal S
o
(H1-0
o
= 95) has been open
for the time set in P4-26, Remote Drive
Disable On-Delay, when P4-25, Remote
Drive Disable Selection, was set to 1 (N.C.).
Remove conditions causing the terminal to open.
LED Display
LCD Display
Minor Fault Name
5e
SE
MEMOBUS/Modbus Communication Test Mode Error
Note:
This alarm will not trigger a multi-function output terminal that is set for alarm output
(H2-
oo
= 10).
Cause
Possible Solution
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive was
running.
Stop the drive and run the test again.
LED Display
LCD Display
Minor Fault Name
tde
TdE
Time Data Error
Cause
Possible Solution
6.4 Alarm Detection
YASKAWA
TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
277
6
Troubleshooting
Summary of Contents for iQpump Micro CIMR-PW Series
Page 443: ......
