Leds - ABB ATS021 Installation And Operating Instructions Manual

Installation and operating instructions, ATS021

7.2.3 LEDs

Figure 7.4 LEDs on ATS021
LN 1 - CB1
A red LN 1 LED signals the status of the line LN 1 (normal line), when the circuit breaker CB1 is ON. Line
status is explained in the table below.
LN 2 - CB2
A red LN 2 LED signals the status of the line LN 2 (emergency line), when the circuit breaker CB2 is ON.
Line status is explained in the table below.
Line Status
Voltage OK
No voltage
Overvoltage
Undervoltage
Invalid frequency
Unbalance
Table 7.1 Line status indication
CB1
A red CB1 LED is ON, when the circuit breaker CB1 is in the ON position (the circuit breaker CB1 is ON
and the circuit breaker CB2 is OFF), the LED is OFF otherwise. While the circuit breaker CB1 is opening
or closing the CB1 led will blink. If the opening command fails, CB1 led will stay ON. If closing command
fails, CB1 led will blink.
CB2
A red CB2 LED is ON, when the circuit breaker CB2 is in the ON position (the circuit breaker CB2 is ON
and the circuit breaker CB1 is OFF), the LED is OFF otherwise. While the circuit breaker CB2 is opening
or closing the CB2 led will blink. If the opening command fails, CB2 led will stay ON. If closing command
fails, CB2 led will blink.
28
1SDH000759R0002, L4106
LED Indication
ON
OFF
Fast blinking (5 Hz)
Blinking (1 Hz, 50% ON / 50% OFF)
Blinking (1 Hz, 90% ON / 10% OFF)
Blinking (1Hz, 10% ON / 90% OFF)
7. Using automatic transfer switch ATS021