User's Manual

4. Commissioning
MF0123A1F_FCC_uc Manual for PSR 700/800 MHz
Page 29
4.2.8. PSR Alarms Connection
For the location of the ALARM RELAY connector, refer to chapter 4.2.3. The
corresponding cable is part of the delivery:
figure 4-3 PSR alarms cable
 Note: The correct connection of this cable to the dedicated annunciator at the site,
which must be part of the building’s fire alarm system, is the sole
responsibility of the installer.
 Note: The connected dedicated annunciator must be capable of detecting a single
ground or open. End-of-line resistors with a value of 2.2 k Ohm are installed
between the normally open and common relay contacts to support the
supervision.
 Note: The source connected to the ALARM RELAY connector (i.e. the dedicated
annunciator) must be power limited as defined by UL 2524 Chapter 44.1.2
 Note: The length of the connected cable must not exceed 30 meters (98.5 ft).
Technical parameters for the delivered alarms cable
Coupling: Thread locking
Environmental characteristics: Ambient temperature: -40°C ~ +90°C
IP rating: IP67
Material:
Technical parameters for the alarm relays
Rated current/voltage: 1A / 24VDC
Contact resistance: <=100m Ohm max.
Insulation resistance: 1000M Ohm min. (500VDC)