Omron M1 Series User Manual page 602

7 Other Functions
 Method of selecting light alarm causes
The causes of the light alarm that can be selected are allocated to 0 to 15 bits as shown below, and
are set and displayed in hexadecimals.
By setting the bit corresponding to the cause to be selected to 1, the concerned cause can be treat-
ed as a light alarm.
Light Alarm Selection 1 (H81)
Bit
15
14
13
12
11
10
9
8
Light Alarm Selection 2 (H82)
Bit
15
14
13
12
11
10
9
8
(Example) When "RS-485 communications error," "Motor 1 overload" or "Cooling fin overheating" is
selected at H81.
LED No.
Bit
Symbol
7-110
Symbol Description
Inrush current prevention
resistor overheat
- -
RS-485 communications
error
- -
- -
- -
- -
- -
Symbol Description
- -
- -
Inverter life (Number of
startups)
Inverter life (Cumulative run
time)
Thermistor detection (PTC)
Low torque detection
PID warning output
Reference loss
LED4
15 14 13 12
-
-
Bit Symbol
7
6
5
4
3
2
1
0
Bit Symbol
7
6
5
4
3
2
1
0
LED3
11 10 9 8 7
- - - - -
M1 Series Standard Type User's Manual (I669)
Description
- -
Motor 2 overload
Motor 1 overload
Braking resistor overheat-
ing
- -
Inverter internal overheat-
ing
External trip
Cooling fin overheating
Description
Life warning
Cooling fin overheating ear-
ly warning
Motor overload early warn-
ing
- -
Current input disconnection
detection
Positioning error
Excessive Positional Devia-
tion
Speed mismatch (Exces-
sive speed deviation)
LED2 LED1
6 5 4 3 2
-
1 0