Filter
Top Products
Getting Started Teledyne API Model T360/T360M Operation Manual
42
3.5.7. Connecting the Alarm Relay Option (OPT 61)
Option 61 consists of a set of 2 concentration alarms. Each alarm can be
independently enabled or disabled as well as programmed with its own,
individual alarm limit point (see Section 4.14 for details on programming the
alarms).
The status of each alar
m is available via a set of alarm relay outputs located in the
lower right quadrant of the analyzer’s rear panel (see Figure 3-4). While there are
four relay outputs on t
he back of the analyzer, only two of the outputs correspond
to the instrument’s two concentration alarms.
Table 3-7: Alarm Relay Output Assignments
RELAY NAME AL1 AL2 AL3 AL4
ASSIGNED
ALARM
ST_SYSTEM_OK2
1
CONCENTRATION
ALARM 1
CONCENTRATION
ALARM 2
SPARE
1
ST_SYSTEM OK2 is a second system OK status alarm available on some analyzers.
ALARM OUT
AL1 AL2 AL3 AL4
NO C NC NO C NC NO C NC NO C NC
ST_SYSTEM_OK2
(Optional Alert)
CONCENTRATION
ALARM 1
CONCENTRATION
ALARM 2
SPARE
Figure 3-10: Alarm Relay Output Pin Assignments
Each of the two concentration relay outputs has 3-pin connections that allow the
relay to be connected for either normally open or normally closed operation.
Table 3-8 describes how to connect the alarm relays.
Table 3-8: Concentration Alarm Relay Output Operation
RELAY PIN
STATE
1
RELAY FUNCTION
NO
C NC
COMMENTS
Concentration
Alarm 1
Active
Gas
concentration level is above the trigger limit set for CONC_ALARM_1
DAS Trigger CONCW1 ACTIVATED
CONC ALARM1 WARN appears on Analyzer Display
AL2
Concentration
Alarm 1
Inactive
Gas
concentration level is below the trigger limit set for CONC_ALARM_1
Concentration
Alarm 2 Active
Gas
concentration level is above the trigger limit set for CONC_ALARM_2
DAS Trigger CONCW2 ACTIVATED
CONC ALARM2 WARN appears on Analyzer Display
AL3
Concentration
Alarm 2 Inactive
Gas
concentration level is below the trigger limit set for CONC_ALARM_2
1
NO = Normally Open operation. C = Common. NC = Normally Closed operation.
07272B DCN6552