WAGO-I/O-SYSTEM 750
Diagnostics
99
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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9
Diagnostics
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LED A indicates the operating status, LEDs B … H indicate possible errors.
The meaning of these indications is as follows:
Table 22: Diagnostics
LED
State
Message
A
Off
No operational readiness or
the internal data bus communication is interrupted.
Note: If the watchdog was disabled, the LED is
always green. See section “Commissioning” >
“Configuration with WAGO-I/O-
CHECK
”.
Green
Operational readiness and correct internal data bus
communication
B
Off
No error
Red
General error message for L1:
Under-/overvoltage or overcurrent
C
Off
No error
Red
General error message: Clipping of a current
measuring path IL1, IL2 or IL3
D
Off
No error
Red
High measuring error, caused by undershooting the
min. voltage at L1, L2 or L3
E
Off
No error
Red
General error message for L2:
Under-/overvoltage or overcurrent
F
Off
No error
Red
General error message for L3:
Under-/overvoltage or overcurrent
G
Off
No error
Red
General error message: Clipping of a voltage
measuring path L1, L2 or L3
H
Off
No error
Yellow Error of the phase sequence L1-L2-L3
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