EmerCom Technologies EMC-ALRM Benutzerhandbuch - Seite 7
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Description of Operation
The Phone Line Monitoring (PLM) feature built into the EmerCom EMC-60 Hands-free
Elevator Phone monitors the phone line as required by ASME A17.1/CSA B44 Code. If
the phone line fails a pair of contacts in the EMC-60 will open (fail-safe) to signal the
EMC-ALRM Alarm Annunciator to generate an audible & visual alert in the elevator
lobby, in the vicinity of the Firefighters Recall Switch.
The visual alert LED will flash until the phone line becomes operational again but the
audible alert buzzer can be silenced by authorized personnel with the key switch (or
pushbutton accessible only to authorized personnel). The buzzer will remain silenced
for 12 hours unless the phone line is restored earlier.
Three LEDs mounted on the EMC-ALRM PCB indicate 'normal', 'alarm' or 'silenced'
status.
A PLM test feature is available in the EMC-60 phone to simulate an alarm by opening
the relay contacts for the number of seconds entered (Command # 24), after which it
returns to normal. An extended test can be conducted by moving the test switch on the
EMC-ALRM PCB into the "TEST" position.
For High-Rise installations an EMCS Consolidator or Rescue Station will be required to
call into any cab from an on-site location. The EMCS Consolidator regularly checks the
health of the external phone lines and the connection with all of the EMC-60 Phones
and sends a signal to the EMC-ALRM (connections to the EMC-60 phone PLM
terminals are not required with the EMCS).
Troubleshooting
EC-Phone indicates a phone line fault but no alarm triggered
Check 12-24V DC supplied and polarity correct
Ensure additional EMC-60 phones are connected in series
EC-Phone indicates phone line okay but alarm triggers
Verify the test switch is in the "NORMAL" position
Check wiring for open-circuits.
Buzzer is not loud enough
Ensure the sticker has been removed from the buzzer
EMC-ALRM User Guide
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