YASKAWA A1000 Series Quick Start Manual page 201

Digital Operator Display
PASS
Cause
MEMOBUS/Modbus test has finished
normally.
PGo
PGoH
rUn
Digital Operator Display
Cause
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive
was running.
THo
<1>
<1> Detected in models 4A0930 and 4A1200.
Digital Operator Display
TrPC
Cause
IGBTs have reached 90% of their expected
performance life.
UL3
UL4
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
MEMOBUS/Modbus Comm. Test Mode Complete
This verifies that the test was successful.
PG Disconnect (for Control Mode with PG)
Detected when no PG pulses are received for a time longer than setting in F1-14.
PG Hardware Fault (detected when using a PG-X3 option card)
PG cable has become disconnected.
Motor Switch during Run
A command to switch motors was entered during run.
MEMOBUS/Modbus Communication Test Mode Error
SE
Note: This alarm will not trigger a multi-function output terminal that is set for alarm output
(H2-oo = 10).
Stop the drive and run the test again.
Thermistor Disconnect
The thermistor used to detect motor temperature has become disconnected.
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance life.
Replace the drive.
Undertorque Detection 1
Drive output current (or torque in OLV, CLV, AOLV/PM, and CLV/PM) less than L6-02 for longer than
L6-03 time.
Undertorque Detection 2
Drive output current (or torque in OLV, CLV, AOLV/PM, and CLV/PM) less than L6-05 for longer than
L6-06 time.
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
5.3 Alarm Detection
201
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