Model TA102A
18
4.0 Operation
This chapter discusses what general maintenance to perform and describes the
electrical inputs, outputs, accepting & resetting alarm & fault conditions and fault
diagnostics.
4.1 General
Maintenance
(Also refer to leaflet T023 of BG Chemle)
Once the Model TA102A has been installed, very little maintenance is required other
than periodic checks to verify the integrity of the system.
•
The user should evaluate conditions at the sensor site to determine how frequent
calibration checks should be performed.
•
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.
•
The power, sensor and output wiring should be checked for tightness, verifying that
all of the components and devices are connected correctly.
•
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 TA102A. They are the:
•
General Monitors Field Device and
•
Card Test input
Both of these input connections (sensor and card test) are made to the rear terminal
block (see Chapter 3 for more detailed installation information).
•
The Smart Sensor or Point IR Detector input consists of the three lead connections
used with General Monitors’ Field Devices (Common, Signal, +24VDC). Refer to
figure 31.
•
The Card Test input consists of a single termination for remote testing of the Model
TA102A’s functions. For detailed information on the Card Test, refer to Figure 33.
4.3 Electrical
Outputs
The electrical outputs on the Model TA102A consist of relay contacts, open collectors
and an analog current signal.
The following outputs have rear terminal relay contacts:
Output
Rear Terminal Relay
Contacts
A1 Alarm
DPDT relay contacts
A2 Alarm
DPDT relay contacts
Fault
SPDT relay contacts
Figure 37 – Rear Terminal Relay Contacts
