Fike TWINFLEX IRM 100-0011 Manual de usuario

INSTALLATION AND MAINTENANCE INSTRUCTIONS

100-0011 Twinflex IRM Module

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TWINFLEX®IRM

Impulse Releasing Module

100-0011

(Suitable for TWINFLEX®SRP control panels from V01.000)

Impulse Releasing Module

Engineering and Commissioning

Manual

(TO BE RETAINED BY THE COMMISSIONING ENGINEER)

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Contents

Before Installation.........................................................................................................4

Positioning......................................................................................................................................4

Device Installation / Mounting ......................................................................................................4

Connections ..................................................................................................................6

Module Layout................................................................................................................................6

Zone Connections (J1)........................................................................................................7

Input Connections (J2, J3, J4) ............................................................................................8

Discharge pressure circuit (J2) ...........................................................................................9

Bottle pressure switch circuit (J3) .......................................................................................9

IVO Missing circuit (J4).......................................................................................................9

IVO Coil Output Connection (J5) ......................................................................................10

Acceptance Testing ....................................................................................................11

Arming / Disarming The System................................................................................12

To Arm the system:......................................................................................................................12

To Disarm the system:.................................................................................................................13

Inspections & Testing.................................................................................................13

DIL Switch SW1 Settings............................................................................................13

LED Table.....................................................................................................................14

Operation.....................................................................................................................15

Technical Data.............................................................................................................16

Technical Support.......................................................................................................17

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General Description

The IRM (Impulse Releasing Module) is a module that controls the operation

of the IVO (Impulse Valve Operator) in a Suppression system.

The IVO is activated by the IRM to dump the Releasing agent from an impulse

valve container during a Fire emergency. The IRM is equipped with three

capacitors that receive a constant charging current from the releasing circuit

of the control panel. When fully charged, the module is capable of firing a

single IVO. The IRM can be used to monitor a Discharge Pressure switch to

provide feedback to the Control Panel that the Releasing agent has been

dumped into the protected space. The IRM can also be used to monitor the

IVO and container for any fault conditions such as low bottle pressure, wire

connections, IVO presence switch etc.

The IRM is connected to the Twinflex SRP (Single Releasing Panel) via a

dedicated zone circuit.

The zone circuit is configured on the SRP as –Release IRM. A maximum of 6

IRMs can be connected on a Zone circuit. The communication between the

SRP panel and IRM(s) is established via the Twinflex signaling protocol.

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Before Installation

The Twinflex IRM must be installed in compliance with the SRP installation manual. The installation must

also meet the requirements of any local authority and BS7273 Pt1 : 2006.

Positioning

The module should be mounted securely and care should be taken to ensure the device is accessible for

future maintenance.

Device Installation / Mounting

All wiring must be installed in compliance with the recommendations laid out by BS7273 Pt1 : 2006

as well as any special recommendations documented in the control panel installation manual. The

cabling used should be of a 2-core 1.5mm2screened, fire resistant type (e.g. MICC or FP200 equivalent),

and is to be wired in the form of a screened 2-core radial circuit (with no spurs) from the control panel,

terminating at the last (“End of Line”) device. Note that ALL connections, including inputs, should be

made via screened FP cable.

Fix the back box in a suitable position using the screw holes provided on the back, remembering to allow

enough space for the correct termination of the appropriate fire resistant cable. See technical data on

page 14 for enclosure dimensions.

This equipment is only IP30 rated so must be mounted outside the area being protected.

There are six 20mm cable entry points provided on the top and one on each side of the enclosure.

These are not knockouts and should be removed either by running a sharp knife around their outer

groove or drilling out the cable entry points.

Site safety procedures should always be observed when using a knife to remove the cable entry points.

If cable entry points are drilled out, the PCB should be removed from the enclosure before drilling

(see Figure 1).

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Figure 1 –IRM Layout

Stuffing glands should be used on all cables to prevent stress being applied to the PCB mounted

terminals.

Care should be taken when terminating devices to ensure all cables are correctly sleeved and

connections are secure. Improper connections will prevent the system from responding correctly in the

event of a fire.

To prevent an inadvertent extinguishant discharge, the IVO should not be connected to the pressurized

container while wiring the IRM circuits and setting up the DIL switch SW1. The IVO should be connected

to the container after all other installation has been completed and verified.

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Connections

In order to carry out high voltage testing and resistance measurements, temporarily connect the

incoming and outgoing zone cables to each other using a 3-way connector block. Once all testing has

been carried out on the cabling, and ‘continuity & integrity’ has been proven, the IRM may be connected

and assembled.

Please remember that all high voltage testing must be carried out before the installation of the IRM

otherwise the electronics will be damaged.

Remember that the device at the end of the line must have its EOL signal activated using the relevant

EOL switch (Refer to DIL switch settings table on page 11). Do not use a resistor or capacitor (or

another manufacturer’s End of Line device) as the end of line, as this may prevent correct operation of

the zone.

Module Layout

Figure 2 shows the IRM layout. Terminals J1 thru J5 are used for all the field wiring connections.

DIL switch SW1 is used to configure the IRM (Refer to DIL switch settings table on page 11).

COMMS

IVO FAULT

DISABLED

POWER FAULT

RELEASE

IP+ IP- SCRN IP+ IP- SCRN IP+ IP- SCRN

IVO

MISSING BOTTLE

PRESSURE DISCHARGE

PRESSURE IMPULSE VALVE ZONE

Z+ 0V SCRN 0V Z+

Fike

10-0115 Iss #

IVO+ IVO- SCRN

SW1

1 8

DIL Switch for IRM

Configuration

Programming header

for factory use only

Zone circuit terminal J1 to

connect to SRP and other IRM's

J2 J5

J3J4

CN1

J4 for IVO

Presence Switch J3 for Low

Pressure Switch J2 for Discharge

Pressure Switch J5 for IVO

connection

Figure 2 –IRM Board Layout

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Zone Connections (J1)

Figure 3 shows how to make the zone positive, zone negative and screen connections between the SRP

panel and the IRM(s).

Figure 3 –Zone Connections

Please note that the “SCREEN” terminals on the IRM should only be connected to the zone cable screen

and NOT to the building earth or the back box earth terminal. The cable screen is connected to earth at

the panel end only, via the zone “SCRN” terminal. It is important to maintain the screen continuity in

order to protect against data corruption from interference.

Fault Monitoring –Zone connections are power limited and supervised. Open and Short faults cause a

loss of communication between the SRP panel and IRMs. They are detected and annunciated by the SRP

panel.

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Input Connections (J2, J3, J4)

Input connections on Terminals J2, J3 and J4 are all Contact closure inputs. The Inputs can be individually

configured (via DIL switch SW1) to be Normally Open or Normally Closed. Figures 4 and 5 show how to

make Input connections. All Input connections are power limited and supervised.

The maximum cable length between the input device and the IRM must not exceed 3 metres.

Note: The triggering resistor used can be a 470Ω resistor (shown) or a 680Ω resistor.

Figure 4 –Normally Open Input Connection

Figure 5 –Normally Closed Input Connection

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Discharge pressure circuit (J2)

The following table shows state of the circuit based on connection type and switch position:

Switch Open

Switch Closed

Normally Open

Normal state

Active state

Normally Closed

Active state

Normal state

Normal state –Circuit is in Normal state.

Active state –The Discharge pressure switch is active which indicates that the extinguishing agent has

been released. The SRP panel indicates this as a Released condition.

Bottle pressure switch circuit (J3)

The following table shows state of the circuit based on connection type and switch position:

Switch Open

Switch Closed

Normally Open

Normal state

Active state

Normally Closed

Active state

Normal state

Normal state –Circuit is in Normal state.

Active state –Bottle pressure switch is active which indicates that the Impulse valve container has a

leak. The SRP panel indicates this as a Fault condition.

IVO Missing circuit (J4)

The following table shows state of the circuit based on connection type and switch position:

Switch Open

Switch Closed

Normally Open

Normal state

Active state

Normally Closed

Active state

Normal state

Normal state –Circuit is in Normal state.

Active state –IVO Presence switch is active which indicates that the IVO has been physically removed

from the Impulse valve container for maintenance or testing. The SRP Panel indicates this as a Fault

condition.

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IVO Coil Output Connection (J5)

This Output circuit is used to energize the IVO coil to (electrically) activate the Impulse valve and dump

the Releasing agent. It is power limited and supervised. The EOL resistor (Fike part# 02-12225) and

blocking diode (Fike part# 02-1544) are mounted inside the IVO connector (Fike part# 17-0143) as

shown below. The assembly instructions are listed in Fike Connector Assembly Drawing No. 70-258.

The maximum cable length between the IVO and the IRM must not exceed 3 metres.

Figure 6 –IVO Connections

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