Model TA102A
Quick-Start Guide
viii
1.5.1 A2 Alarm
The terminal designations for the
A2
alarm outputs are:
LABEL
TERM
DESCRIPTION
A2-C1
2d
Relay Common (1 & 2)
A2-1
4d
Relay Contact
A2-2 6d
Relay
Contact
A2-3
8d
Relay Contact
A2-4 10d
Relay
Contact
A2-C2
12d
Relay Common (3 & 4)
A2-OC 14d
Open
Collector
(OC)
LA2
24z
OC Logic for A2 LED
Figure 4 – A2 Alarm Outputs
The
A2
alarm outputs are DPDT relays, 1 open collector output (
A2-OC
) that follows
the logic of the relays and 1 open collector output (
LA2
) that follows the blinking pattern
of the front panel LED. The A2-C1 designation is common for A2-1 & A2-2. The A2-C2
designation is common for A2-3 & A2-4. The normally open (
NO
) and normally closed
(
NC
) contacts depend on a user selectable option (see Chapter 5). The table below
refers to the proper open and closed
A2
alarm relay contacts while the unit is on
power:
Figure 5 – A2 Alarm Relay Contacts
1.5.2 A1 Alarm
The terminal designations for the
A1
Alarm outputs are:
Label
Term
Description
A1-C1
2z
Relay Common (1 & 2)
A1-1
4z
Relay Contact
A1-2 6z
Relay
Contact
A1-3
8z
Relay Contact
A1-4 10z
Relay
Contact
A1-C2
12z
Relay Common (3 & 4)
A1-OC 14z
Open
Collector
(OC)
LA1
24d
OC Logic for A1 LED
Figure 6a – A1 Alarm Outputs
The
A1
Alarm outputs are DPDT relays, 1 open collector output (
A1-OC
) that follows
the logic of the relays and 1 open collector output (
LA1
) that follows the blinking pattern
of the front panel LED. The A1-C1 designation is common for A1-1 & A1-2. The A1-C2
designation is common for A1-3 & A1-4. The normally open (
NO
) and normally closed
(
NC
) contacts depend on a user selectable option (see Chapter 5).
User Selected
Relay State
Normally
Open
Normally
Closed
Normally
Energized
A2-C1 & A2-1,
A2-C2 & A2-4
A2-C1 & A2-2,
A2-C2 & A2-3
Normally
De-Energized
A2-C1 & A2-2,
A2-C2 & A2-3
A2-C1 & A2-1,
A2-C2 & A2-4
