ABB ATS022 Installation And Operating Instructions Manual page 30

Installation and operating instructions, ATS022
If, for example, you wish to monitor a frequency alarm (bit 6) and/or an overvoltage (bit 2) alarm, the
corresponding binary code is 100010, which converted to decimal becomes 34. The decimal number
must be selected directly from the DO7 menu in the device.
For correct operation of DO7 the presence of an auxiliary power supply is required.
DO7 must not be used in installation configurations with circuit-breakers T1-T2-T3 and motor operator
MOS.
The Unbalance alarm also includes cases of undervoltage or overvoltage (for example, the drop of one
phase in a 3P or 3P + N system).
In the absence of voltages, ATS022 cannot calculate the angle between the various phases and therefore
it considers this condition as: Incorrect phase sequence.
DO8 Not available
DO9 Circuit breaker operation failed alarm indication
When the opening or closing command of a circuit breaker fails, contact DO9 closes; the switching logic
is disabled and the Alarm LED lights up.
To reset the alarm press RESET:
the alarm is reset, the Alarm LED turns Off and the ATS022 enters manual mode.
Press RESET again to bring ATS022 to automatic mode.
DO10 Automatic/Manual mode indication
Contact DO10 indicates the operating mode of the device:
• DO10 open: ATS022 operates in automatic mode
• DO10 closed: ATS022 operates in manual mode
DO11 CB3 circuit breaker control
Depending on the operating mode set, contact DO11 allows control of only opening or opening/closing
of circuit breaker CB3:
Protection Devices selection
2 CBs
3CBs NPL
3CBs NPL Bus Tie
3CBs Bus Tie
*The CT-AWE must be adjusted with a time between 200ms and 300ms.
Table 6.1: Description of DO11 functions - ATS022
DO12 Logic enabled/disabled indication
Contact DO12 indicates whether switching logic is enabled or disabled:
• DO12 open: logic enabled
• DO12 closed: logic disabled
1SDH000760R0002
DO11 NOTES
not used
CT-AWE type timed relays required if
used
selected opening&closing option
used CT-AWE* type timed relays required
used CT-AWE* type timed relays required
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6. Input and output signals