Service & Maintenance Manual 10Appendix C
5100614_CFD5000 T - CM4.3_Service & Maintenance Manual_T_EN_2020_E
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I/O 70 An Input/Output type providing a different function depending on the configuration of
the system. The programmable functions are:
•
General Input
•
Fault Input
•
Conventional Fire Alarm Zone
•
Output (24 VDC/70 mA)
I/O 700 An Input/Output type providing a different function depending on the configuration of
the system. The programmable functions are:
•
General Input
•
Fault Input
•
Output (24 VDC/700 mA)
I/O Module A module with inputs and/or outputs. I/O modules always run in Managed mode, that
is they must be managed by a Controller module.
I/O pin or I/O signal An I/O pin or an I/O signal is a logical signal, compare to terminal.
IDA The IDA communication protocol.
IDAxt IDA extended. The communication protocol on the loop-line and loop-line IS. IDAxt
is only used by SIL products and is not compatible with IDA products.
IEC 62280-2 A Railway applications standard - Communication, signaling and processing systems -
Part 2: Safety-related communication in open transmission systems.
Inter-central communication Communication between centrals is called inter-central communication.
Interface channel A communication channel used to interface the systems with external devices.
Interface channels can be configured to communicate on different protocols.
Internal power supply Output power from PSU.
Intra-central communication Communication within a central is called intra-central communication. This
communication is between modules.
IP Ingress Protection - rating used to specify the environmental protection (enclosure) of
electrical equipment.
IS Intrinsically Safe.
Isolator M Isolator Module; used to distribute a part of a FDS.
ISS Integrated Safety System.
Logic solver A programmable logic controller in this context, e.g. setting an output depending on
the state of an input. A logic solver is required to receive the input signal(s), make
appropriate decisions based on the nature of the signal(s), and change its outputs
according to user-defined logic. It is used to describe SIS, and “safe” PLC systems and
also in relation with IEC 61508.
Loop The same as a loop-line.
Loop cable A cable which the FDS uses to power and communicate with the loop units. The loop
begins and ends in the loop module in the FDS.
Loop module The piece of hardware within the FDS which powers and communicates with the loop
units connected to its loop-line.
Loop unit Fire detectors, gas detectors, manual call points and other devices that can be
connected to the Loop.
Loop-line A common name for the cable, loop devices and other equipment connected to a loop
module.
Loop-line IS A part of the loop-line protected by a galvanic isolator.