Operation; General Maintenance; Electrical Inputs; Electrical Outputs - General Monitors TA402A Instruction Manual

Model TA402A
This chapter discusses
maintenance to perform, describes the
electrical inputs, outputs, accepting &
resetting alarm, calibration
conditions and fault diagnostics.

4.1 General Maintenance

Once the Model TA402A has been installed,
very little maintenance is required other than
periodic checks to verify the integrity of the
system.
n The user should evaluate conditions at
the detector site to determine how
frequent checks should be performed.
n A functional test of the system should be
performed at least once each year. This
test should include full operation of
stand-by systems or back up power for
the prescribed period.
n The power, detector and output wiring
should be checked
verifying that all of the components and
devices are connected correctly.
n If the "Password" is disabled, periodic
checks of the setup parameters should be
performed.

4.2 Electrical Inputs

There are two electrical inputs to the Model
TA402A. They are the General Monitors'
Field Device and the Card Test input. Both
of these input connections (field device and
card test) are made to the rear terminal block
(see chapter 3 for more detailed installation
information).
n The Flame Detector input consists of the
standard three lead connections used
with General Monitors' Field Devices
(Black = Common, White = Signal, Red
= +24Vdc). See figure 8 on page 10 of
this manual.
what general
& fault
for tightness,
n The Card Test input consists of a single
termination for remote testing of the
Model TA402A' s
detailed information on the Card Test,
refer to figure 9 on page 11 of this
manual.

4.3 Electrical Outputs

The electrical outputs on the Model
TA402A consist of relay contacts, open
collectors and an analog current signal.
n The following outputs have rear terminal
relay contacts:
A1 Alarm - DPDT relay contacts
A2 Alarm - DPDT relay contacts
Fault - SPDT relay contacts
All of the relay contacts on the Model
TA402A have a maximum rating of:
4A @ 250Vac, 3A @ 30Vdc resistive
n The following outputs have rear terminal
open collectors:
A1 Alarm & LED Mimic
A2 Alarm & LED Mimic
Fault
UA - Unaccepted Alarm
FUA - Unaccepted Fault
CAL/INH - Discrete Inhibit Indication
All of the open collector outputs on the
Model TA402A have a maximum rating of:
100mA @ 35Vdc

Operation

13
functions. For