Fike TWINFLEX SRM 100-0010 Manuale utente
INSTALLATION AND MAINTENANCE INSTRUCTIONS
100-0010 Twinflex SRM Module
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TWINFLEX®SRM
Solenoid Releasing Module
100-0010
(Suitable for TWINFLEX®SRP control panels from V01.000)
Solenoid Releasing Module
Engineering and Commissioning
Manual
(TO BE RETAINED BY THE COMMISSIONING ENGINEER)
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Contents
General Description......................................................................................................3
Before Installation.........................................................................................................4
Positioning......................................................................................................................................4
Device Installation / Mounting ......................................................................................................4
Connections ..................................................................................................................6
Module Layout................................................................................................................................6
Zone Connections (J1)........................................................................................................7
Solenoid Connections (J2)..................................................................................................8
External Power for Solenoid (J3) ........................................................................................9
Input Connections (J4, J5, J6)..........................................................................................10
Discharge pressure circuit (J4) .........................................................................................11
Bottle pressure switch circuit (J5) .....................................................................................11
Solenoid Missing circuit (J6) .............................................................................................11
Acceptance Testing ....................................................................................................12
Hardware Connections ...............................................................................................13
Inspections & Testing.................................................................................................13
DIL Switch SW2 Settings............................................................................................14
LED Table.....................................................................................................................15
Operation.....................................................................................................................16
Technical Data.............................................................................................................17
Technical Support.......................................................................................................18
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General Description
The SRM (Solenoid Releasing Module) is a module that controls the
operation of the Solenoid valve(s) in a Suppression system. The typical
applications where the SRM can be implemented for are –Pre-action
sprinkler, Deluge, CO2, Water mist and Foam. The SRM 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 SRM can also be used to monitor the Solenoid and container for any
fault conditions like low bottle pressure, wire connections, faulty actuator
coil, tamper valve etc.
The SRM is connected to the Twinflex SRP (Single Releasing Panel) via a
dedicated zone circuit.
The zone circuit is configured on the SRP as –Release SRM. A maximum of
2 SRMs can be connected on a Zone circuit. The communication between
the SRP and SRM(s) is established via the Twinflex signaling protocol.
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Before Installation
The Twinflex SRM 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 15 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 –The SRM 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 a system from responding correctly in the
event of a fire.
To prevent an inadvertent extinguishant discharge, the solenoid valve should not be connected to the
container while wiring the SRM circuits and setting up the DIL switches SW1 and SW2. The solenoid
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 SRM may be
connected and assembled.
Please remember that all high voltage testing must be carried out before the installation of the SRM
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 12). 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
The following figure shows the SRM layout. Terminals J1 thru J6 are used for all the field wiring
connections. DIL switch SW1 is used to select between 1x24V or 2x12V solenoid(s) and
DIL switch SW2 is used to configure the SRM (Refer to DIL switch SW2 settings table on page 12).
Figure 2 –SRM 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 SRM(s).
Figure 3 –Zone Connections
Please note that the “SCREEN” terminals on the SRM 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 the SRMs. They are detected and annunciated by the
SRP panel.
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Solenoid Connections (J2)
Solenoid connections are power limited and supervised. The Solenoid connection (12 or 24 volt)
requires an EOL circuit supervision assembly (Part# 17-0144), provided by Fike, to be installed between
the SRM and the solenoid coil. The assembly provides a means to monitor the solenoid wiring for open
and short faults.
A single 24V solenoid must be connected as shown in Figure 4. DIL switch SW1 must be in ON position
and the solenoid needs to be connected between terminals 1 and 4 at the Solenoid Valve terminal block.
The maximum cable length between the Solenoid and the SRM must not exceed 3 meters.
Figure 4 –24 Volt Solenoid Connections
Two 12 V solenoids must be connected as shown in Figure 5.
DIL switch SW1 must be in OFF position. Solenoid #1 needs to be connected between terminals 1 and 2
and Solenoid #2 needs to be connected between terminals 3 and 4 at the Solenoid Valve terminal block
on the SRM. The maximum cable length between the solenoid and the SRM must not exceed 3 meters.
Figure 5 –12 Volt Solenoid Connections
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External Power for Solenoid (J3)
A 24V DC 2A External Battery Backed Up power supply is required to power the solenoid to dump the
Releasing agent. The 24V DC power can be supplied by the SRP panel AUX PWR 1 & AUX PWR 2
terminals.
Note: If the SRP Panel AUX PWR is used, each AUX PWR output can supply up to a maximum of 1A
which must not be exceeded.
If a separate external power supply is used it must be listed for use with Fire Alarm systems. It must be
connected to +24V and 0V terminals on J3.
Due to 24V DC input and solenoid isolation from the host control panel the connected power supply
must have the ability to indicate a ground fault on the 24V DC and also provide an on-board fault relay
that must be connected to a Monitored Input on the SRP to signal the fault.
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Input Connections (J4, J5, J6)
Input connections on Terminals J4, J5 and J6 are all contact closure inputs. The inputs can be individually
configured (via DIL switch SW2) to be normally open or normally closed. Figures 6 and 7 show how to
make input connections. All input connections are power limited and supervised.
The maximum cable length between the input device and the SRM must not exceed 3 metres.
Note: The triggering resistor used can be a 470Ωresistor (shown) or a 680Ω resistor.
Figure 6 –Normally Open Input Connection
Figure 7 –Normally Closed Input Connection
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