YASKAWA iQpump Micro CIMR-PW Series User Manual page 277

LED Display LCD Display
ol4
Cause
Parameter settings are not appropriate for the
load
LED Display LCD Display
ou
Cause
Surge voltage present in the drive input
power.
The motor is short-circuited.
Ground current has overcharged the main
circuit capacitors via the drive input power.
Noise interference causes the drive to operate
incorrectly.
LED Display LCD Display
Pump Cycling
pcyc
Pump Over
Cycle
Cause
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).
LED Display LCD Display
rdd
R-DNE-So
Cause
Terminal So (H1-0o = 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.).
Terminal So (H1-0o = 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.).
LED Display LCD Display
5e
Cause
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive was
running.
LED Display LCD Display
tde
Cause
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Overtorque Detection 2
The current has exceeded the value set for Overtorque Detection 2 (L6-05) for longer than the allowable
oL4
time (L6-06).
Check the settings of parameters L6-05 and L6-06.
DC Bus Overvoltage
The DC bus voltage exceeded the trip point.
ov
• For 200 V class drives: approximately 410 V
• For 400 V class drives: approximately 820 V (740 V when E1-01 < 400)
• 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.
• Check the motor power cable, relay terminals and motor terminal box for short circuits.
• Correct grounding shorts and turn the power back on.
• 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.
Pump Over Cycle
• 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.
Remote Drive Disable
Remove conditions causing the terminal to close.
Remove conditions causing the terminal to open.
MEMOBUS/Modbus Communication Test Mode Error
Note: This alarm will not trigger a multi-function output terminal that is set for alarm output
SE
(H2-oo = 10).
Stop the drive and run the test again.
Time Data Error
TdE
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
6.4 Alarm Detection
277
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