TEL TAVRIDA ELECTRIC VCB15 LD, User Manual

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4.2.7 CM indication
The CM has the following LED indication functionality:
CM “Power“ indication;
CM “Ready“ state indication;
CM “Malfunction“ state indication.
CM state
Indication
LED Power LED Ready LED Malfunction
Power supply voltage is
absent more than 3 minutes
off off off
"Close" operation is
preparing
continuous off off
CM is ready and operable continuous continuous off
Power supply voltage is absent for
more than 1.5
seconds
off continuous 1 blink
Exessive trip or close time continuous off 2 blinks
Actuator coil isolated continuous off 3 blinks
Short circuit of Actuator coil continuous off 4 blinks
Manual Trip and Lock continuous off 5 blinks
Overheat continuous off 6 blinks
State of ISM is not defined continuous off 7 blinks
Internal fault of the CM continuous off continuous
Notes.
1. Number of blinks in series followed by 1.5 s intervals, continuous light or off state are shown for LED indicators.
2. Period of checking Actuator Coil state (short circuit / isolated) – 10 s.
Priority of the fault indication starting from the highest one:
1. CM overheat ;
2. ISM state is open without command from the CM;
3. Exessive trip or close time;
4. Manual Trip and Lock;
5. Short circuit of Actuator coil;
6. Actuator coil isolated;
7. Power supply voltage is absent more than 1.5 seconds.
Table 11 - CM indication
The placement of LED inicators are shown in Figure 79. The LED indicators are visible from two directions.
1. “Power“ LED indicator
2. “Malfunction“ LED indicator
3. “Ready“ LED indicator
2 1
Figure 79
CM_16 LED indicators
3
The self-diagnostic system inside the CM detects possible malfunctions and reports them via the Malfunction
LED blink signals and Malfunction Relay state. The explanation of the LED blink codes is given in Table 11.