Yaskawa CIMR-PU2A0040 [295/548] Fault detection

Yaskawa CIMR-PU2A0040 [295/548] Fault detection
Cause Possible Solution
The Real-Time Clock for the digital operator
is not set in parameter o4-17
The drive is a new drive, first power-up
condition
o4-17 was set to 2, Reset, by the user,
manually clearing the Real-Time Clock
data.
Set o4-17 to 1 to set the time for the digital operator.
The drive will display the
"TIM" alarm (Time Not Set) when the Real time Clock is not set . Additionally,
at power up, if the "TIM" condition is present, the drive will automatically switch to the time setting
screen (o4-17 = 1) for 30 seconds to prompt the user to set the Real-Time Clock.
The user did not set the Real Time Clock when
prompted following power-up.
Cycle power to the drive and set the Real Time Clock within 30 seconds of power-up, or set the clock
manually via parameter o4-17.
The digital operator battery is low or the
battery has been replaced
Replace the digital operator battery and set the Real-Time Clock.
An error has occurred in the Real-Time Clock
function of the digital operator
Replace the digital operator. For instructions on replacing the digital operator, contact Yaskawa or your
nearest sales representative.
Digital Operator Display Fault Name
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).
Cause Possible Solution
Parameter settings are not appropriate for the
load
Check the settings of parameters L6-02 and L6-03.
There is a fault on the machine side Check the load for any problems.
Digital Operator Display Fault Name
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).
Cause Possible Solution
Parameter settings are not appropriate for the
load
Check L6-05 and L6-06 settings
There is a fault on the machine side Check the load for any problems.
Digital Operator Display Fault Name
UL6 UL6
Motor Underload
The weight of the load has fallen below the underload curve defined in L6-14.
Cause Possible Solution
The output current has fallen below the motor
underload curve defined in L6-14 for longer
than the time set to L6-03
Adjust the value set to L6-14 so that output current remains above the motor underload curve during
normal operation.
Digital Operator Display Fault Name
Uv1
DC Bus Undervoltage
One of the following conditions occurred while the drive was running:
Voltage in the DC bus fell below the undervoltage detection level (L2-05).
For 200 V class drives: approximately 190 V
For 400 V class drives: approximately 380 V (350 V when E1-01 is less than 400)
For 600 V class drives: approximately 475 V
The fault is output only if L2-01 is set to 0 or 1 and the DC bus voltage has fallen below the level set to
L2-05 for longer than the time set to L2-02.
Cause Possible Solution
Input power phase loss
The main circuit drive input power is wired incorrectly.
Correct the wiring.
One
of the drive input power wiring terminals
is loose
Ensure there are no loose terminals.
Apply the tightening torque specified in this manual to fasten the terminals. Refer to Wire Gauges
and Tightening Torque on page 77 for details.
6.4 Fault Detection
YASKAWA SIEP YAIP1U 01A AC Drive - P1000 Technical Manual
295
6
Troubleshooting
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com

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