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Optional Hardware and Software Teledyne API - Model 200EH/EM Operation Manual
52
A
LARM 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 5-13: 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 5-6 describes how to connect the alarm relays.
Table 5-6 Concentration Alarm Relay Output Operation
RELAY PIN
STATE
1
RELAY FUNCTION
N
O
C
N
C
COMMENTS
Concentration Alarm 1
Active
Gas
concentration level is above the trigger limit set for
CONC_ALARM_1
iDAS 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
iDAS 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.
04521C (DCN5731)