General Monitors TA402A Instruction Manual page 12

Installation
8
Rear Terminal Connections (
14 AWG wire may be used if it is properly
stripped according to figure 3.
Fig ure 3
Contact with PC Board components should
be avoided in order to prevent damage by
static electricity.
To connect wires to the terminal block on
the Model TA402A, loosen the desired
screw, insert the stripped end of the wire and
tighten.
For the rear terminal designations refer to
figure 4 below:
Fig ure 4
) A2 Time De layed Alarm
continued
The terminal designations for the A2 Time
Delayed Alarm outputs are:
La bel
A2- C1
A2-1
A2-2
A2-3
A2-4
A2- C2
A2- OC
LA2
The A2 Time Delayed 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.
common for A2-1 & A2-2.
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 Time Delayed Alarm relay
contacts while the unit is on power:
User Se lected
Re lay State
De- Energized
General Monitors
Term De scrip tion
2d Re lay Com mon (1&2)
4d Re lay Con tact
6d Re lay Con tact
8d Re lay Con tact
10d Re lay Con tact
12d Re lay Com mon (3 & 4)
14d Open Col lec tor (OC)
OC Logic for A2 LED
24z
The A2-C1 designation is
Nor mally
Open
Nor mally A2- C1 & A2-1,
En er gized A2- C2 & A2-4
Nor mally A2- C1 & A2-2,
A2- C2 & A2-3
The A2-C2
Nor mally
Closed
A2- C1 & A2-2,
A2- C2 & A2-3
A2- C1 & A2-1,
A2- C2 & A2-4