Honeywell ACM 150, Manual To Installation, Operation, And Maintenance

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ACM 150
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The Alarm 1/Alarm 2 Incident Log shows two gas concentration values:
Peaked the maximum or peak reading
Last the most recent reading
Press “Show Trend Key” to display the trend for the current 2-hour period only. If the
leak event cleared earlier than the current 2-hour period, you can review the archived
trend graph ( Trend graphs ).
The Reset Key is used to release activated relays. If you are using the optional
latching relays, use this selection to reset and deactivate the relays. Press “Remove
cleared Alarms” to clear all alarms from the past history.
Relay activation
When a Alarm 1/Alarm 2 Incident occurs, the ACM 150 monitor software activates
the corresponding relays. All ACM 150 monitors have at least 80 output relays. The
action of each relay is programmable. The default setup for the ACM 150 monitor
assigns these relays to area 1-40. One Alarm 1 level and one Alarm 2 level relay is
assigned to each area. The user can easily change the assignments, programming
the relays for customized activation via the setup menu, Programmable relays .
Default relay setup
• Relays 1-40 activate when the Alarm 1 level is exceeded for any active gas at
areas 1-40 with one Alarm 1 level relay per area.
• Relays 41-80 activate when the Alarm 2 level is exceeded for any active gas at
areas 1-40 with one Alarm 2 level relay per area.
• Example: For area 1, relay 1 and relay 41 are preassigned for Alarm 1 and for
Alarm 2 level activation. This progression continues through to area 40.
Programming relays
The ACM 150 monitor output relays are all programmable. The relays may be
configured by an authorized user to activate based on the following selections:
Trigger The Alarm 1or Alarm 2 level gas
concentration
Mode Direct or Latching
Activation Points (Areas) For one point only or any group of points
up to a maximum of 10 points
Gases Select which monitored gases activate
the relay
Each programmable relay is customized to activate for specific areas and under
specific conditions. For example, it gives the user control over which conditions
might shut down specific gas cylinders. It allows the user to set zones for personnel
alarms so that entire facilities do not have to be evacuated if a leak is local or if the
gas leaking is not hazardous at the level detected.
Typically, alarm incidents are brief and quickly clear if automatic gas shutdown is
activated by the alarm event. With the gas supply cut off, the leak should dissipate.
However, if the leak is not shut off, the ACM 150 monitor will most likely sense the
alarm event each time it scans the leaking area(s).