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QS2 Series Low Voltage Servo Drive
Chapter 4 LED Alarm Indicators and Dial
Switch
4.1 LED Indicator Light
4.1.1 Red LED
Red indicator light is alarm indicator light. It is out in normal system. Its
flicker frequency is the code delegating the following status:
No.
Flicker frequency
Alarm code
Description of fault
1
1
1
Encoder alarm
2
2
2 Single phase over current
3
3
3
Overload alarm
4
4
4
Overvoltage of hardware
5
5
5
Over current of hardware
6
6
6
Overvoltage of software
7
7
7
Limit alarm
8
8
8
Reserved by manufacturer
9
8
9
Position deviation alarm
10
8
16
Reserved by manufacturer
11
Constantly on
--
System fault
12
Constantly out
--
Normal
Note: Alarm code is readable from the upper computer’s interface
4.1.2 Green LED
The green indicator indicates the servo enable signal and its indicator contents
are as follows:
No.
Current status
Description
1
Flicker
Drive power supply is in normal condition
2
Constantly on
Motor servo enable
3
Constantly out
Power supply fault
