YASKAWA A1000 Technical Manual page 142

5.3 Alarm Detection
PGoH
<2>
<1> Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to EN61800-5-1, ISO13849 Cat.
3, IEC/EN61508 SIL2, Insulation coordination: class 1.
<2> Detected in models CIMR-Ao4A0903 and 4A1200.
142
PG Hardware Fault (detected when using a PG-X3 option card)
PG cable has become disconnected.
Motor Switch during Run
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).
Thermistor Disconnect
THo
The thermistor used to detect motor temperature has become disconnected.
IGBT Maintenance Time (90%)
TrPC
IGBTs have reached 90% of their expected performance life.
Undertorque Detection 1
UL3
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) less than L6-02 for longer than L6-03
time.
Undertorque Detection 2
UL4
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) less than L6-05 for longer than L6-06
time.
Undervoltage
One of the following conditions was true when the drive was stopped and a Run command was entered:
• DC bus voltage dropped below the level specified in L2-05.
Uv
• Contactor to suppress inrush current in the drive was opened.
• Low voltage in the control drive input power. This alarm outputs only if L2-01 is not 0 and DC bus voltage
is under L2-05.
Output Voltage Detection Fault
voF
There is a problem with the output voltage.
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide