10
2.5.1 Alarm Connection Procedure
Before making any connections to the A36D, ensure that the AC power is off at the main breaker box and the
charger’s breakers are off. Verify that no voltage is present by using a voltmeter at all input and output
terminals.
For relays mentioned as ENERGIZED on alarm condition:
If it is desired that the annunciator be active until the alarm triggers, connect the annunciator leads to the
NC and C contacts of the desired alarm (located on the relay alarm contacts on S2A-198 board). If it is
desired that the annunciator be deactivated until the alarm triggers, connect the annunciator leads to the
NO and C contacts of the desired alarm.
For relays mentioned as DE-ENERGIZED on alarm condition:
If it is desired that the annunciator be active until the alarm triggers, connect the annunciator leads to the
NO and C contacts of the desired alarm (located on the relay alarm contacts on S2A-198 board). If it is
desired that the annunciator be deactivated until the alarm triggers, connect the annunciator leads to the NC
and C contacts of the desired alarm.
EXAMPLE: A customer wants a green lamp to be illuminated
at all times and wants a red lamp to illuminate and a speaker
to sound when the Summary alarm triggers. The customer
would make the connections to the NC and C contacts on
one set of the Summary relay contacts between the speaker
and a power supply. On the other set of Summary relay
contacts, the customer would connect the NO and C contacts
between the green lamp and power supply, and would
connect the NC and C contacts between the red lamp and
power supply. Refer to Figure 10.
Figure 10 – Example Connections
(Customer Provided Equipment)
S2A-198 Relay Information
Relay Function
Logic
AC Power Fail
De-Energize on Fail
Summary
De-Energize on Fail
High DC Voltage
Shutdown
Energize on Fail
Low DC Current
De-Energize on Fail
High DC Voltage
Energize on Fail
Low DC Voltage
De-Energize on Fail
Open DC Protection De-Energize on Fail
Table 8 – Alarms Relay Logic
Load Resistive Load (P.F. = 1)
Contact Material Ag (Au clad)
Maximum Allowed Current 2 A
Max. Operating Voltage and
Current
0.5 A at 125 VAC
0.6 A at 110 VDC
2.0 A at 30 VDC
Max. Switching Capacity
62.5 VA
60 W
Min. Permissible Load 10 µA / 10 mVDC
Table 9 – Alarm Contact Specifications
Summary of Contents for A36D
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