Specifications

Chapter 8: Troubleshooting
Firmware – S2011 and S3012
Revision: 1 (9/98) 69 © Saftronics, Inc.
8.2 Alarm Display and Explanation
Alarms do not activate fault contact outputs and the Inverter returns to its former operation status automatically when the cause is
removed. The following table explains the different types of alarms.
Table 21 Alarm Display and Explanation
Alarm Display Contents Explanation
U
Blinking
Undervoltage detection Undervoltage has been detected.
O
Blinking
OV during stop
Main circuit DC voltage exceeds the overvoltage detection level while the Inverter
output is OFF.
O H 1
Blinking
Heatsink overheating
Under condition of heatsink temperature > [OH1 detection level (approximately 95°C)],
continuous operation at OH1 detection is selected.
O L 3
Blinking
Overtorque detection
Under condition of Inverter output current > n075 (overtorque detection level),
continuous operation at overtorque detection is selected.
Blinking
External baseblock External baseblock command is input from control circuit terminal.
E F
Blinking
Simultaneous FWD/REV
RUN commands
Both FWD and REV RUN commands are input simultaneously for over 500 ms.
C A L L
Blinking
MEMOBUS transmission
waiting
Under condition of n002 (operation method selection) > 4, the Inverter has not received
the normal data from serial communication after power ON. Refer to 8.1 Fault
Diagnosis and Corrective Actions for verification/change of the constant.
O H 3
Blinking
Inverter overheat pre-alarm Inverter overheat pre-alarm signal is input from control circuit terminal.
C E
Blinking
MEMOBUS transmission
error
Continuous operation is selected at MEMOBUS transmission error. Refer to 8.1 Fault
Diagnosis and Corrective Actions for verification of the constant.
O P E 1
Inverter kVA setting fault Inverter kVA setting error.
O P E 3
Multi-function contact input
setting error
One of the following setting errors occurred in the multi-function contact input selection
(n035 to n039):
• Two or more of the same values are set.
• Both 15 and 16 are set at the same time.
• Both 22 and 25 are set at the same time.
O P E 5
V/f data setting error Setting error of n012 to n018 (V/f data).
O P E 6
Constant setting error
One of the following setting errors occurred:
• Inverter rated current 5 0.1 > n032 (motor rated current), or n032 > Inverter rated
current 5 2.
• n058 (jump frequency 1) > n059 (jump frequency 2) − n60 (jump frequency range).
• n030 (output frequency upper limit) < n031 (output frequency lower limit).
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