10Appendix C Service & Maintenance Manual
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5100614_CFD5000 T - CM4.3_Service & Maintenance Manual_T_EN_2020_E
CS-PYH Loop unit, Photo-sensor Y-chamber and Heat-sensor fire detector. A combined
smoke/heat detector.
CS-PH Ex Loop unit, CS-PH Ex in an intrinsically safe combined smoke/heat detector.
CS-Safety M A module that collects status from CS-Loop M modules.
DCS Distributed Central System (see also Stretched central).
Detector A device capable of detecting smoke, heat, flames or gas.
DIP switch Dual in-line package switch. Used to set address etc. on loop units and modules.
Disablement Disablement of devices such as a Zones or Detectors. Alarms from disabled devices
will be inhibited.
EMC Electromagnetic Compatibility.
EMI Electromagnetic Interference.
EN 50159 Standard (2010); Railway applications - Communication, signaling and processing
systems - Safety-related communication in transmission systems.
EN 54 The European product standard for fire detection and fire alarm systems.
ESD System Emergency Shut Down System, embedded system taking care of safety procedures in
case of emergency, for example shut down of fire doors, ventilation etc.
Ex Ex can mean different things depending on when it is mentioned. Examples: ‘Ex
proof’ means ‘Explosion Proof’, ‘Ex area’ means ‘Hazardous Area’ which is an area
where the atmosphere might be explosive. ‘Ex certified’ means both ATEX and IECEx
certification.
Ex-classification The protection type used in a hazardous area; e.g. Ex d.
Extension bus An additional (RS485) bus used inside a central for intra-central communication. The
Extension bus is typically used for connecting Repeater modules (that does not require
redundant communication and power) and should not be confused with the Backbone
bus.
External communication Communication to external entities is called external communication, using for
example MODBUS, NMEA or TCMS protocols.
External control Outputs used to control external equipment, for example fire doors.
Fault condition The state of the system when a fault is detected.
FDS Fire Detection System.
Firmware Embedded software.
FSK Frequency Shift Keying.
GA-auto Automatically generated signal according to a pre-defined pattern (e.g. 7 short 1 long
signal) for alarm devices or the PA system.
GA-Morse Signal pattern generated manually via the GA button.
GA General Alarm, common activation of alarm devices and activation of the PA system.
GDS Gas Detection System.
GRP Glass-Reinforced Plastic.
Heavy duty manual call point A heavy duty manual call point is made of GRP, metal or similar material and it has a
high level of corrosion resistance.
Hot Standby mode Controller modules in Hot Standby mode can take over the responsibilities of the
Controller module managing a central.
I/O Input/output.
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