TSi Power Corporation MC80043,4,5,6,7,8,9,50
ATS-800 Series Automatic Transfer Switches Rev. 3, April, 2018
TSi Power Corporation Proprietary Information
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Note: The audible alarm can be turned off by setting the Audible Alarm switch, located on the
front panel, to the “OFF” position, see Figure 3.
Figure 12: ATS Series Display Board Assembly
2.23 DB-9 ALARM PORT ASSEMBLY (See Figure 13)
Signals can be transmitted by means of the DB-9 connector in the rear of the ATS unit that provide . for
remote monitoring of alarms. See Figures 8 and 13. Pin assignments are outlined in section 4.3.
Figure 13: PZ00129 DB-9 Alarm Circuit Board Assembly
2.3 INPUT/OUTPUT CIRCUIT BREAKERS (See Figure 13)
One two-pole circuit breaker (located in the rear of the unit) connects the Primary AC to the ATS
unit and another two-pole circuit breaker connects the Backup AC to the ATS unit.
Note: If the output load current exceeds 125% of the circuit breaker ratings (15, 20, 30 or 40 A),
then the input circuit breaker(s) will trip and prevent the possibility of overheating of the
components or wires inside the ATS Series units. Reduce the load if the circuit breaker trips. If
Primary AC
Green LED
Indicator
Backup AC
Yellow LED
Indicator
No Primary or
Backup AC
Input Red LED
Alarm
Connectorized
Ribbon Cable
to Main Control
Board
