Keypad Keys - ABB ATS021 Installation And Operating Instructions Manual

5. Using the automatic transfer switch
CB1
The status of circuit breaker CB1 is signalled by red LED CB1, see Figure 5.1/7:
Circuit Breaker Status
CB1 open
CB1 closed
CB1 opening movement under way
CB1 closing movement under way
CB1 opening failed
CB1 closure failed
Table 5.3: CB1 status indications
CB2
The status of circuit breaker CB2 is signalled by red LED CB2, see Figure 5.1/8:
CB2 circuit breaker status
CB2 open
CB2 closed
CB2 opening movement under way
CB2 closing movement under way
CB2 opening failed
CB2 closing failed
Table 5.4: CB2 status indications

5.3 Keypad keys

CB1 key
In manual mode, press the CB1 key, see Figure 5.1/1 for Opening/Closure of circuit breaker CB1.
CB2 key
In manual mode, press the CB2 key, see Figure 5.1/2 for Opening/Closure of circuit breaker CB2.
RESET
In case of alarm, press RESET to reset the alarm.
TEST button
ATS021 must be in the manual position.
Press the TEST key, see Figure 5.1/4, to set the test mode of the direct and inverse switching sequences.
To exit the TEST mode press RESET.
1SDH000759R0002
CB1 LED Indication
LED CB1 OFF
LED CB1 ON
CB1 LED flashing (1 Hz, 50%ON / 50%OFF)
CB1 LED flashing (1 Hz, 50%ON / 50%OFF)
LED CB1 ON - LED Alarm ON
CB1 LED flashing - Alarm LED flashing
LED indication
LED CB2 OFF
LED CB2 ON
CB2 LED flashing (1 Hz, 50%ON / 50%OFF)
CB2 LED flashing (1 Hz, 50%ON / 50%OFF)
LED CB2 ON - LED Alarm ON
CB2 LED flashing - Alarm LED flashing
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Installation and operating instructions, ATS021