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Sensors And Modules; En54 Requirements; Loop Devices - Sensors And Mcps; Loop Devices - Isolators - Honeywell NOTIFIER ID2000 Series Installation & Commissioning Manual

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EN54-2: 13.7
Maximum of 512
Sensors and/or
MCPs per system.
EN54-2: 12.5.2
Maximum of 32
Sensors and/or MCPs
between isolators.
OPAL Protocol Devices
Most OPAL devices have internal,
FET-type isolators. With OPAL-
compatible bases the isolator is
connected across terminals +2 and +4
on the positive loop leg.
NEVER use a high
voltage tester on
the loop.
997-433-000-5, Issue 5
May 2010
ID2000 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. OPAL Protocol may be used but are
supported in CLIP polling mode only. To include the internal
isolator (not all OPAL devices incorporate these) use the
B501 AP sensor base which has an additional positive leg
loop wiring connector for the device's internal isolator. OPAL
devices will work satisfactorily on B501 bases except the
internal isolator, when fitted, cannot be operated.

4.1 EN54 Requirements

The ID2000 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

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.
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
conventional zone detectors and/or MCPs connected.
-
-
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, including isolators,
no high voltage testers such as Meggers may be used
on the loop; low voltage testers such as multimeters
may be used.
Note: Any continuity checks should allow for the effects
18
CLIP devices or OPAL devices without internal isolators:
To comply with the requirements of EN54-2, isolators
should be fitted between a maximum of 32 loop devices.
For the ID2000 Series, do not place more than 25 CLIP
loop devices between isolators (20 if FET isolators are
used).
OPAL devices with internal isolator fitted when used
with the B501 AP sensor base: Ensure loops comply
with the requirements of EN54-2.
of isolators.

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