AMC 1ACO Instructions Manual page 14

Switch Feature
SW1-2, Minimum Run
Timer
SW2-2
SW1-3, Sensor Type
(Mode
SW1-4
Select)
SW2-1 Alarm Relay
Activated
when Fault is
Detected
SW2-3 Audio Enable
for Warning
SW2-4 Sensor Fault
Threshold
SW2-5 Activation
Delay,
Warning
SW2-6 Activation
Delay, Alarm
SW2-7 Audio Alarm
Enable
Gas Monitor 1ACO One-Channel Monitor
Position
Warning and alarm relays are maintained in alarm state
See
for a minimum time interval following alarm activation, as
Description
follows:
SW1-2
OFF
ON
OFF
ON
Note that a sensor level falling below the alarm threshold
and then re-occurring during this time resets the alarm
timer for the associated alarm.
Sensor type (threshold mode) is selected as follows:
See
SW1-3
Description
OFF
ON
OFF
ON
The Alarm relay is not activated when fault is detected.
OFF
ON When fault is detected, the Alarm relay is activated.
OFF Audio alarm is disabled for Warning conditions.
ON Audio alarm is activated in conjunction with Warning.
OFF Sensor Fault thresholds set at 0.4 mA into 250R or 100
mV.
ON Sensor Fault thresholds set at 1.4 mA into 250R or
350mV.
OFF No activation delay of Warning conditions.
ON Five minute delay on activation of Warning conditions
following sensor exceeding alarm threshold.
OFF No activation delay of Alarm conditions.
ON Delay on activation of Alarm conditions following sensor
exceeding alarm threshold.
OFF Audio alarm (buzzer) disabled.
ON Audio alarm (buzzer) enabled.
Description
SW2-2 Minimum Run Time
OFF 0 minutes
OFF 5 minutes
ON 10 minutes
ON 30 minutes
SW1-4 Sensor Type (Mode)
OFF Increasing
OFF Decreasing
ON Reserved
ON Reserved
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