Airport Systems

3.4Flash Head Status Reporting Relay Installation Wiring

The PLCHMR features eight (8) configurable status reporting outputs. Each output connects to a form-c relay via three screw terminal connections. Each screw terminal connection is uniquely tied to one of the relay’s contacts. In accordance with Figure

3.4-1:

1)Terminal labeled #1 connects to the normally-open contact

2)Terminal labeled #2 connects to the common contact

3)Terminal labeled #3 connects to the normally-closed contact,

Typically each discrete alarm reporting connections is made to the site’s alarm monitoring system uses terminals 1 & 2. Using the typical connection ensures that a fail/fault indication is reported in the event that power is interrupted to the SG-60 High Intensity Strobe Light System.

Each relay’s state is controlled uniquely by its software Tier Reporting Mechanism (TRM). The TRM is software configurable and enables the operator via a menu to combine tier related flash-heads into a group that can be associated with a TRM. (See Section 3.7.3 for additional details on software configuration)

The two operating states (activated/deactivated) of each relay represent the state of its corresponding TRM. The TRM’s two states are Flash/OK and Fail/Fault. The TRM state FLASH/OK represents a normal operation alarm level and is indicated by an activated relay. The TRM state Fail/Fault represents an abnormal operation alarm level and is indicated by a deactivated relay.

For example:

Assume that all the flash-heads on tier #1 are operating normally when some event causes a tier’s flash-head to malfunction. While all of the flash-heads on tier 1 are ok, TRM #1 is set to FLASH/OK and relay #1 is activated. After the fault event occurs causing a flash-head on the tier to malfunction, then TRM #1 would automatically change to the Fail/Fault state which would de-activate relay #1.

An activated relay cause the normally-open contact to be closed allowing any signal applied to the common contact(#2) to appear on the normally-open contact (#1). For a deactivated relay the normally-close contact is closed allowing any signal applied to the common contact (#2) to appear normally-closed contact (#3).

PLC Health Monitoring & Reporting Sys

3-11

Manual EPM40002083-001 Rev -

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Honeywell 40002083 installation and operation guide Flash Head Status Reporting Relay Installation Wiring
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40002083 specifications

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