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Sensors And Modules; En54 Requirements; Loop Devices - Sensors And Mcps; Loop Devices - Isolators - Honeywell Notifier ID3000 Series Installation & Commissioning Manual

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EN54-2: 13.7
Without E-LIBs -
Maximum of 512
Sensors and/or
MCPs per system.
EN54-2: 13.7
With mix of LIBs and
E-LIBs - Maximum of
512 Sensors and/or
MCPs not connected
to E-LIBs.
EN54-2: 12.5.2
Maximum of 32
Sensors and/or MCPs
between isolators.
NEVER use a high
voltage tester on
the loop.
997-274-000-6, Issue 6
September 2009
ID3000 Series Installation & Commissioning Manual
4

Sensors and Modules

Each of these devices is packaged with an instruction
leaflet showing the correct interconnections for various
applications.

4.1 EN54 Requirements

The ID3000 Series Control Panel design allows for the
connection of up to 198 loop devices per analogue loop;
i.e. up to 99 sensors and 99 modules.

4.1.1 Loop Devices - Sensors and MCPs

If Enhanced Loop Interface Boards (E-LIBs) are not fitted,
then to comply with the requirements of EN54-2, a
maximum of 512 sensors and/or MCPs should be
connected to the control panel across ALL analogue
loops, including all conventional zone detectors and/or
MCPs connected.
If E-LIBs (PN: 124-292) are fitted, the design limits given
above in Section 4.1 apply. If a mixture of E-LIBs and
LIBs (PN: 124-323) are fitted, then the restrictions of the
first paragraph of Section 4.1.1 apply to all loops not
connected to E-LIBs.
Failure to comply contravenes the requirements of
EN54-2 in the event of a system fault.

4.1.2 Loop Devices - Isolators

Isolators must be used on each analogue loop to separate
sensors and/or MCPs, including all loops with
conventional zone detectors and/or MCPs connected.
To comply with the requirements of EN54-2, isolators
should be fitted between a maximum of 32 loop devices.
For the ID3000 Series, do not place more than 25 loop
devices between isolators (20 if FET isolators are used).
Failure to comply contravenes the requirements of
EN54-2 in the event of a transmission path fault.

4.2 Loop Wiring Testing

Before connecting the panel or devices, the wiring of each
loop may be tested for continuity and insulation. Once
any components are connected, inluding isolators, no
high-voltage testers such as Meggers may be used on
the loop; low-voltage testers such as multimeters may
be used.
Note: If isolators are fitted, the +ve conductor of the loop
18
will be open circuit.

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