KG u-FEP User manual

www.kg-groep.com November 1, 2020 | version 1.9
User Manual
µ-FEP
FIRE DETECTION &
EXTINGUISHING
CONTROL PANEL WITH
AN INTEGRATED UPS

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 2
Document revision details
Issue
Modification Detail
Author
Date
1
1st publishing document
CvT
19 / 12 / 2019
2
IP rating adjust to IP 66
CvT
25 / 02 / 2020
3
Text correction page 7, appendix 3 becomes chapter 18
CvT
26 / 02 / 2020
4
Resistor change chapter 14 linear heat cable
CvT
17 / 04 / 2020
5
Ambient Temperature Range -10 to 50° Celsius
CvT
20 / 04 / 2020
6
Text adaptation chapters 4, 6, 7 and 10
CvT
08 / 06 / 2020
7
Add Carbon Monoxide/Heat detector chapter 11
CvT
09 / 06 / 2020
8
Text adaptation chapters 3.2, 3.3, 5.2.2, 5.3, 7.1, 10
CvT
01 / 09 / 2020
9
New graphics chapter 8 Text adaption chapter 8 and 18
CvT
01 / 11 / 2020
Software upgrade details
Ver.
Modification Detail
Author
Date
05
1st release approval BRL 21045 Kiwa
CvT
19 / 12 / 2019
06
Write protection USB port adjusted + Modbus activation
CvT
01 / 07 / 2020
07
Ventilation off with 2efire alarm or start extinguishing delay
CvT
23 / 07 / 2020
08
Sounder relay also active with manual extinguishing release
CvT
05 / 08 / 2020
08
General fire leds also on with manual extinguishing release
CvT
05 / 08 / 2020

3
Important Notes –PLEASE READ CAREFULLY
This manual should be thoroughly read and understood before installation and commissioning of the
system is undertaken.
The µ-FEP, with the associated connections, must be installed, commissioned, and maintained by a
skilled, knowledgeable, and competent personnel that is trained to perform this work. It is assumed
that the personnel who commission the system is familiar with objective of the equipment and the
technical terminology associated with this. Except for the backup battery there are no user-
serviceable parts in the µ-FEP.
Electrostatic Discharge (ESD) precautions when opening the µ-FEP.
Always wear a properly grounded anti-static wrist strap. Avoid direct contact with any of the
components on the printed circuit board. Never let the electronics come in contact with clothing. The
ground strap cannot dissipate static charges from fabrics. Failure to follow accepted ESD handling
practices could cause damage to the µ-FEP. The warranty may be void if the equipment is damaged
by ESD.
This equipment is not guaranteed unless installed and commissioned in accordance with the valid
local standards.
The µ-FEP has successfully passed CE and FCC compliance testing for EMC according to the:
EN 50130
EN 61000
EN 55016
EN 55022
47 CFR 15
ANSI 63.4
ICES-003
The µ-FEP has a Kiwa BRL 23003/02-2019-part 5 attests. This is a type test admission for an
extinguishant release system for dry condensed extinguishing aerosol.
Reservations
The diagrams of operating principles of the µ-FEP fire-/extinguisher system, included in this manual,
are intended to support this manual and are therefore not intended and suitable for technical
implementation or realization.
No part of this manual may be reproduced, stored in an automated database or made public in any
form or by any means either electronically, mechanically or by photocopying, recording, or in any
other way, without prior written permission from K&G Groep BV.
The policy of the K&G Groep BV is one of continuous improvement and as such we reserve the right
to make changes to product specifications at any time and without prior notice.
Errors and omissions excepted.

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 4
TABLE OF CONTENTS
1INTRODUCTION 6
2KEY PROPERTIES 6
3FEATURES 7
3.1 ACOUSTIC ALARM 7
3.2 4 HOURS EMERGENCY POWER 7
3.3 COMMUNICATION 7
3.4 EXTINGUISHERS TERMINAL BOARD (µ-ETB) 7
3.5 HISTORIC EVENT LOG 7
4ENCLOSURE & INSTALLATION 8
5IN- & OUTPUTS 9
5.1 MONITORED INPUTS 9
5.1.1 Detection zones 9
5.1.2 External release input 9
5.1.3 External hold input 9
5.2 MONITORED OUTPUTS 10
5.2.1 Monitored extinguishing output 10
5.2.2 Monitored sounder/beacon output 10
5.3 VOLT FREE CONTACT RELAY OUTPUT 10
6CONTROL BUTTONS 11
6.1 MUTE 11
6.2 RESET 11
6.3 LAMP TEST 11
6.4 HOLD EXTINGUISHING RELEASE 11
6.5 TEST MODE 11
6.6 BACKUP POWER OFF 11
6.7 EXTINGUISHING RELEASE 11
7LED INDICATORS 12
7.1 GENERAL FIRE ALARM 12
7.2 POWER 12
7.3 BACKUP POWER 12
7.4 TEST MODE 12
7.5 GENERAL FAULT 12
7.6 FIRE ZONE ALARM 12
7.7 FIRE ZONE FAULT 12
7.8 EXTINGUISHING RELEASED 13
7.9 EXTINGUISHING DELAY 13
7.10 EXTINGUISHING RELEASE HOLD 13
7.11 EXTINGUISHING FAULT 13
7.12 INTERNAL FAULT INDICATORS 13

5
8DIP SWITCHES 14
8.1 STANDARD SETTING 14
8.2 EXTINGUISHING DELAY TIMER 14
8.3 MUTE BUZZER 14
8.4 LATCHING/NON-LATCHING 14
8.5 SINGLE OR DUAL FIRE ALARM 15
8.6 DIRECT RELEASE 15
8.7 NO AUTOMATIC RELEASE 15
9CONNECTION & CABLE AND WIRING SPECIFICATIONS 16
10 TECHNICAL SPECIFICATION 17
11 DEVICES SUPPORTED BY THE µ-FEP 18
11.1 DETECTION DEVICE SUPPORT 18
11.2 SOUNDER /BEACON DEVICE SUPPORT 18
12 ENCLOSURE SPECIFICATIONS 18
13 µ-FEP MAIN WIRING DIAGRAM 19
14 µ-FEP FIRE DETECTOR AND WIRING OPTIONS 20
15 µ-FEP EXTERNAL EXTINGUISHER RELEASE & HOLD WIRING OPTIONS 21
16 µ-FEP EXTERNAL VTB SOUNDER & BEACON WIRING OPTIONS 21
17 µ-FEP FIRE EXTINGUISHERS WIRING OPTIONS 22
18 µ-ETB CONNECTION DEVICE 23

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 6
1INTRODUCTION
The µ-FEP is designed to be a stand-alone fire detection-extinguishant release panel used in systems
for e.g. electrical cabinets, CNC machines, engine rooms, small area’s or other equipment in which
the user should be able to extinguish a fire rapidly and effective.
This is done by pressing two buttons, external release button or using fire sensor inputs. The μ-FEP
continuously senses its inputs and, in the event of a fire, gives the correct output to enable a product
specific fire extinguishing.
The µ-FEP control panel is designed to meet the requirements of the European standard EN54-2 Fire
Detection and Fire Alarm systems - Control and Indicating Equipment, and the EN12094-1 for Fixed
firefighting systems Part 1: Requirements and test methods for electrical automatic control and the
NEN-EN 15276-2 for aerosol fire extinguishing systems. The µ-FEP is a versatile fire alarm /
extinguishing system with a high-performance level intended for small/compact firefighting systems.
The µ-FEP is a combined fire alarm control panel and extinguishing release system and has two
detection zones, any, or all of which can contribute to the extinguishant release decision. The µ-FEP
extinguishant release panel offers outstanding value and performance for all small, fixed firefighting
installations.
2KEY PROPERTIES
▪Able to set to manual, single stage or double stage detection, alarm, and extinguishing
▪Outputs for fire, fault, extinguishing released, ventilation off and visual & acoustic alarm
device
▪A full monitored output for the aerosol fire extinguishing generators
▪Two full monitored fire alarm input groups (zones) for linear heat and / or point detectors
▪Two full monitored alarm input groups for external extinguishing release and hold function
▪Double extinguisher release buttons to prevent unwanted releases
▪Extinguishers hold release button to postpone releases
▪Extinguisher release delay to prevent unwanted releases
▪A test mode that allows to test the detection, signalling and controls without a release
▪Watchdog timer will for additional safety
▪Fault monitoring and fault identifying
▪Fault monitoring extinguishing output
▪Fault monitoring fire detection input
▪Additional option to override the release extinguishing delay after manual release
▪Additional functionality regarding separated external hold-off functions
▪Additional functionality regarding separated external release extinguishing functions
▪Historic event log memory readable from a mini USB port
▪The µ-FEP works on input voltage 6 to 28 Volt DC
▪Modbus RS485 communication port
▪The unit is waterproof IP66 and surge, transient, ESD and EMC protected
▪CE and FCC mark

7
3FEATURES
3.1 ACOUSTIC ALARM
The µ-FEP has an internal attention signal. Malfunctions are standard signalized with a continuous
tone signal, alarms with a pulsating tone signal. Deviating tone signalling takes place with
extinguishing activation and operation of the hold (extinguishing delay) function. The voltage of the
monitored output to drive an additional sounder/beacon is controlled by the µ-FEP and is
independent of the main power supply voltage. In case emergency power status, the sounder output
voltage reduces to 9 VDC what might affect the sound pressure level.
3.2 4HOURS EMERGENCY POWER
To reach the maximum time of emergency power, it is important that the power consumption during
the emergency power status is as low as possible, but that all primary functions will remain active.
Replacing the LIR2477 battery every 3 years will prevent shortening the standby time and prevent
power down in case of increased power consumption during alarm state. When using the MODBUS
communication system, the emergency power capacity is reduced to 3.5 hours.
3.3 COMMUNICATION
The µ-FEP has a Modbus network connection. Modbus enables communication among devices
connected to the same network. A Modbus network consists 1 master and a maximum of 247 slave
units, each with a unique address. For more information, see the MODBUS user manual.
3.4 EXTINGUISHERS TERMINAL BOARD (µ-ETB)
The µ-FEP has as an extra option a special for aerosol extinguishers developed junction box.
See chapter 18 for more details.
3.5 HISTORIC EVENT LOG
The µ-FEP has an historic event log
memory of 10000 events readable from a
USB port. Connect an USB cable between
the Mini-B USB port and your computer.
The device will act as an USB stick.
You operating system will create a new
disk station. The files on the disk station
are text files with logged event. Each time
the µ-FEP reboots, a new file is created
with a new batch number in the filename.
Buttons press events, detailed fault
indication and relay switching events are
logged in the text files.

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 8
4ENCLOSURE &INSTALLATION
The µ-FEP control panel
should be mounted on a dry,
flat surface, at eye height to
the signaling and operating
panel, in a horizontal position
so that the enclosure cannot
deformed. The µ-FEP should
be installed in an accessible area. Suitable fixings should be used
at all µ-FEP fixing points such that the panel is securely mounted
and is not liable to move once fixed. Take into consideration environmental
factors such as high temperatures and/or magnetic fields, the µ-FEP control panel can be installed in
another enclosure. A disadvantage can be the inability to witness alarms and / or fault messages on
the spot. The enclosure is provided of 9 predrilled holes meant for cable glands. To ensure IP rating
the cables must be brought in using the provided cable glands.
The FEP housing consists of two parts, so it can easily be
mounted by hand. The rear part with the terminal block in it
and the front part with the panel electronics. The two
parts are connected to each other by a flat cable.
Before installing the panel, it is advisable to start separating
the rear part (backbox) from the front part of the panel.
Open the enclosure by means of a screwdriver (size 3).
Mount the rear part (backbox) at the desired
location. The hinged catch of this enclosures
conceals the installation screws.
Connect the required cables with sufficient length
and connect them to the terminal block according
to the connection requirements.
After the cable glands have been
tightened, the front part with the
electronics must be re-installed and
the flat cable must be re-connected.

9
5IN-&OUTPUTS
5.1 MONITORED INPUTS
The µ-FEP is equipped with two detection zones and two external button inputs (Extinguishing
Release & Hold). These inputs are continuously scanned for alarm or fault detection. All inputs are
monitored and require a 10 kΩ end of line resistor, even if the input is not used. The button inputs
must have a trigger resistor between 470 and 1000 Ω.
5.1.1 Detection zones
The µ-FEP is equipped with two detection zone inputs. The loop inputs are continuously scanned for
fire or fault detection.
The loops are set to the following values:
▪RESISTANCE of less than 100 Ω: FAULT
▪RESISTANCE of more than 100 Ωand less than 1,5 kΩ: FIRE
▪RESISTANCE of more than 1,5 kΩ and less than 8 kΩ: FAULT
▪RESISTANCE of more than 8 kΩ and less than 12 kΩ: NORMAL
▪RESISTANCE of more than 12 kΩ: FAULT
Note:
When a low resistance (less than 450 Ω) linear heat cable is used, a 470 Ωresistor must be installed
in series at the begin of the loop on one of the wires. Otherwise the wires of the linear heat cable
which will give a fault instead of a fire alarm. Contrary to the linear heat cable, when using Fenwal
thermal heat detector, a resistor of 470 Ωmust be placed in series with the alarm contact, an end of
line resistor 10 kΩ in parallel over the alarm contact and 470 Ωresistor.
The commissioner should ensure to be using detectors with corresponding specifications and the
correct input voltage and alarm resistance of the used detector for the µ-FEP. The maximum number
of detectors in one zone is 4. Devices advised for the µ-FEP are described in the manual.
All monitored inputs are short circuit protected. The voltage of all monitored detection inputs is
controlled by the µ-FEP and are independent of the main power supply voltage. The automatic fire
detectors must have a working voltage between 9 and at least 20 VDC. Each fire zone needs an end
of line resistor of 10 kΩ, even if the fire zone is not used.
5.1.2 External release input
The µ-FEP has a separate input for an external release extinguishing button. The external release
extinguishing button has the same function as the dual release extinguishing buttons (fire buttons)
on the front of the panel. By pressing the external release extinguishing button, the fire
extinguisher(s) will be released. Depending on the dipswitch (time) settings it is possible the release
is delayed. The delayed can be set from 0 to 30 seconds in steps of 5 seconds. These loop inputs are
continuously scanned for alarm or fault conditions.
5.1.3 External hold input
The µ-FEP has a separate input for an external hold-off button. The external hold-off button has the
same function as the internal hold-off button. When an alarm is active and this button is pressed, the
extinguisher release is delayed. When the button is released, the system will wait the configurated
time delay (see DIP switches). Release of the Hold input shall re-start the countdown release timer
from maximum.

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 10
5.2 MONITORED OUTPUTS
The µ-FEP is equipped with six outputs, two monitored and four potential free. The monitored
outputs are continuously scanned for open and short circuit fault conditions. The potential free
outputs have a contact load of 30 VDC /1A. The monitored outputs are the extinguishing output
(extinguishing release) for a maximum of 5 extinguishing units and the sounder output for a two-tone
alarm signal generator.
5.2.1 Monitored extinguishing output
In combination with the µ-ETB the extinguishing output of the µ-FEP is reverse polarity protected.
Without the use of an µ-ETB, the extinguishing output is NOT reverse polarity protected. In that case
a diode acts as the end of line monitoring device (see specification chapter for more details) with the
anode on the +line and cathode on the –line. A maximum of five aerosol generator ignitors can be
wired in series.
5.2.2 Monitored sounder/beacon output
Sounder circuits are monitored for open and short circuit faults by placing a 10 kΩ end of line
monitoring resistor across the two-tone alarm sounder/beacon. The monitoring resistor must be
connected on the + VDC and first stage –VDC. At a first stage fire alarm, the optical and acoustic
alarm device will be activated. Upon receipt of a second fire alarm (main fire alarm) and/or operation
of the front panel mounted manual release buttons, or external manual release buttons connected
on the monitored manual release input, the optical and acoustic alarm device will be activated with
a different alarm tone. This alarm will also be activated immediately in case of extinguishing delay.
5.3 VOLT FREE CONTACT RELAY OUTPUT
Contact load relays 30 VDC 1A.
▪1 relay output general fire alarm.
The general fire relay will energize upon activation of a fire condition on any of the fire zones
or by pressing of the in or external extinguishing release buttons.
▪1 relay output extinguishing released.
The extinguishing release relay will be energized when an extinguishing activation has taken
place.
▪1 relay output general fault message.
The fault relay is normally energized and will de-energize upon any fault condition including
total loss of power.
▪1 relay output switch off the ventilation/air-co from the protected area.
The ventilation stop relay will be energized upon receipt of a second stage fire alarm and/or
operation of the front panel release buttons or external mounted extinguishing release
button.

11
6CONTROL BUTTONS
The µ-FEP has a clear and orderly front panel
with which the system status of the µ-FEP
can be determined rapidly. The figure shows
the controls and indications. The µ-FEP facia
consists of a special foil with embedded the
control buttons and LED indicators.
6.1 MUTE
The buzzer can be silenced at any time by
pressing the Mute button. To silence the
external sounder, press the Mute button
twice. In case of a second alarm the sounder
and buzzer will be activated again.
6.2 RESET
After the cause of the alarm has been determined the µ-FEP can be reset by pressing the Reset button.
Manual Call Points, if triggered, must first be reset locally. The µ-FEP will reset any latched devices.
6.3 LAMP TEST
All indicators and buzzer can be test at any time by pressing the Mute and Reset simultaneously.
6.4 HOLD EXTINGUISHING RELEASE
By pressing the hold button at the panel or external hold button will, as long this button is pressed,
the extinguishing release sequence will be halted and cause the yellow hold activated indicator flash,
and the buzzer to sound pulsating. When the control panel is in the 2nd stage alarm condition and
the hold function is activated, the extinguishing release sequence will be halted, the 2nd stage sound
shall change to 1st stage sound. Release the Hold button shall re-start the countdown release timer
from maximum.
6.5 TEST MODE
Fire alarm systems must be tested regularly to ensure that they are functioning correctly. The system
can be tested by using the test mode. In test mode you can test the alarm and fault circuits without
activating the extinguishers. Activating the test mode is signalled, the general fault relay is enabled.
Press the test mode button for 3 seconds to enable the test mode. It activates the general fault relay
and the yellow test mode indicator flash. Press test mode button again for 3 seconds to bring the
system back to normal status and the yellow test mode indicator tuns off.
6.6 BACKUP POWER OFF
Press the Hold and Test button simultaneously and the emergency power supply is turned off. In the
case of service, wiring or maintenance work, it is important that not only the primary power, but also
the secondary (emergency) power must be disabled.
6.7 EXTINGUISHING RELEASE
When a fire emerges, press both front extinguishing release buttons, this will trigger an alarm. The
fire extinguishers will be released, depending on the dip switch (time) settings.

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 12
7LED INDICATORS
The front of the µ-FEP has 2 common fire
3 internal fault, and 12 individual LED
indicators on the front divided in three
sections to indicate general functions, fire
detection and the extinguishing status,
with separate LED indicators.
7.1 GENERAL FIRE ALARM
Upon receipt of a fire condition on any of
the fire zones or by pressing of the
internal or external extinguishing release
buttons the two red general fire indicators lights continuously.
7.2 POWER
This green power indicator confirms the power status of the µ-FEP, which can have different states.
In normal condition this indicator lights continuously, in emergency power status this indicator turns
off. When starting the µ-FEP after a power failure or after an extinguishers activation, the green
power indicator flashes for maximal 1 minute until the system is ready for use again. The system is
ready for use when the green power indicator lights continuously.
7.3 BACKUP POWER
This green LED indicates the emergency power status of the µ-FEP. When active the indicator will
light continuously. In emergency power state, the system will go into a kind of survival mode. Only
the primary functions remain in operation such as fire /fault detection, fault output, and a one-time
activation of the extinguishers.
7.4 TEST MODE
The yellow test indicator lights continuously indicating the system is in test mode.
7.5 GENERAL FAULT
General fault indicator lights and specific fault indicators flash. This yellow fault indicator will light
continuously at any fault condition, the test mode and emergency power status.
7.6 FIRE ZONE ALARM
Upon receipt a fire alarm condition caused by the activation of a fire detector, the red alarm
indicator of the relevant fire alarm zone will flash. The general fire indicators will always accompany
this, and the internal buzzer sounds pulsating.
7.7 FIRE ZONE FAULT
When the µ-FEP has detected an error in one of the critical fire detection paths of the system, the
specific yellow zone fault indicator flash and the general fault indicator lights up. The internal buzzer
sounds pulsating.

13
7.8 EXTINGUISHING RELEASED
The red extinguishing release indicator lights continuously when the extinguishers are activated. This
red extinguishing release indicator lights up after ending of the configured extinguishing delay time,
or when the two extinguishing release buttons on the front are pressed or the external release button
is activated. A tone sounds when the extinguishing has released.
7.9 EXTINGUISHING DELAY
The red extinguishing delay indicator indicates that the extinguishing release delay is active. This
indicator flash when the delay time is running. This indicator will light continuously when pressing the
hold button. When the hold button is released, the indicator shall flash again and re-start the
countdown release timer from maximum. This indicator turns off when the delay time has elapsed,
and the extinguishing release has taken place.
7.10 EXTINGUISHING RELEASE HOLD
The yellow hold indicator flash and a different tone sounds as long the hold button on the panel front
or the external hold button is pressed. This yellow hold indicator is turns off when the hold button is
released.
7.11 EXTINGUISHING FAULT
This yellow indicator lights up continuously when a critical fault is detected (open or short circuit) in
the extinguishing output line. This yellow indicator turns off when the cause of the fault has vanished.
7.12 INTERNAL FAULT INDICATORS
There are three extra yellow fault indicators on the internal electronic PCB,
meant for 2nd priority fault messages and these indicators will flash.
▪LED 1 signals a fault in the extinguishing delay hold input (MI 4)
▪LED 2 signals a fault in the external extinguishing release input (MI
3)
▪LED 3 signals a fault in the monitored sounder/beacon line (MO 2)

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 14
8DIP SWITCHES
8.1 STANDARD SETTING
The most common setting of the µ-FEP is based on user experience.
In this standard setting all switches are in OFF position. Under normal
circumstances only µ-FEP green Power LED is On.
Standard setup is:
▪The extinguishing delay time is 0
▪The internal buzzer is not muted
▪The fire detection zones operate in the latching mode
▪Dual zone alarm for automatic extinguishing release. (Co-incidence)
▪When release delay is programmed the manual release is also delayed
▪The use of automatic fire detectors as the initiators of an
extinguishing action is the standard
8.2 EXTINGUISHING DELAY TIMER
Extinguishing delay is only useful in normally occupied spaces. For the delay
timer settings, there are 3 dipswitches, which can be set between 0 and 30
seconds, with steps of 5 seconds. The count-down timer is used to wait a
certain amount of time before extinguisher is activated. This timer can be
set with the use of the TIME-SWITCH dipswitches 1,2 and 3. The timer is
changeable between 0 and 30 seconds, with steps of 5 seconds.
8.3 MUTE BUZZER
The acoustic attention signal of the µ-FEP is activated with every action or
reaction on the panel. When testing or programming the panel, this
acoustic attention signal can be disrupting for persons present in the
environment or room where this panel is installed. The acoustic signal can
be temporarily switched off with the dip switch 4. The deactivation of the
acoustic warning is not signalled on the LED panel, but the general fault
relay has been activated. The reason for this is that it must remain possible
to see the optical fault messages during technical and/or maintenance
activities.
8.4 LATCHING/NON-LATCHING
Normally the fire alarm, from a fire detector, will remain activated on the
panel until the panel has been reset. That is the latching status. In the non-
latching status, the fire alarm zone is self-resetting and will reset the alarm.
In other words, the fire detector/zone reset itself when the reason for the
fire alarm has vanished. In the non-latching position, two zones must, both
and at the same time, have a fire alarm and stay in alarm to decide positive
over an extinguishing release.
ON
OFF
1 2 3 4 5 6 7 8
NO DELAY
ON
OFF
1 2 3 4 5 6 7 8
5 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
10 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
15 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
20 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
25 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
30 SECONDS
ON
OFF
1 2 3 4 5 6 7 8
NON LATCHING
ON
OFF
1 2 3 4 5 6 7 8
LATCHING
ON
OFF
1 2 3 4 5 6 7 8
MUTE ON
ON
OFF
1 2 3 4 5 6 7 8
MUTE OFF

15
When non-latching.
It is possible that a short increase of humidity, dust or rise in temperature, nearby the detector occurs.
This can result in a fire alarm that only disappears when the reset button on the panel is physically
pressed. Normally somebody will go to the fire panel and press the reset button and with that restore
the false alarm. But not in all the cases is that easy and handy. Then the use of the non-latching
feature can be a solution. Be careful with using and applying the non-latching solution.
WARNING
Non-latching feature is ONLY applicable at the Fenwal heat detectors, some cable heat detection
systems, and the Apollo optical smoke detector type ORB-OP-02032-APO.
8.5 SINGLE OR DUAL FIRE ALARM
Normally we work in dual fire zone mode. In some cases, a single mode
status can be handy. A single or dual fire alarm triggers the fire relay, LEDs,
and fire-extinguisher. Single or dual mode is configurable with one
dipswitch. Any detection zone alarm will operate audible and visual
indications as follow.
In dual (standard) mode the extinguisher(s) will be released after both detection zones will have a fire
alarm condition and cause an internal pulsing alarm sound. The fire relay and extinguisher are
activated according to the dip-switch settings. In single mode the extinguisher(s) will be released
when one detection zone is in fire alarm condition and cause an internal pulsing alarm sound. The
fire relay and extinguisher are activated according to the dip-switch settings.
8.6 DIRECT RELEASE
When the timer settings are set to a delay (between 10 –30 seconds), the
direct extinguish dipswitch gives the choose to override the delay in case of
a fire event. If a fire alarm is detected, by the automatic fire detectors of
the µ-FEP and the count-down timer is started, you can override the timer.
By pressing the dual release extinguishing buttons on the front of the panel
or the external release extinguishing button, the extinguishing releasing
process starts without delay immediately.
8.7 NO AUTOMATIC RELEASE
In this state, only pressing the extinguishing release buttons on the device or the external release
button can (immediately) release the fire-extinguisher. In this case, FIRE alarms from the detector
zones will only trigger the FIRE indications and fire output relays (and not
release the fire-extinguishers). The TIME-SWITCH dipswitches can also be
used to set the device in No-AUTO release state. In this state, only pressing
the fire-buttons on the device or the external extinguishing release button
can (immediately) release the fire-extinguisher. In this case the fire alarm
from the detector zones will only trigger the fire alarm leds and relays (but
will not activate the fire-extinguishers).
ON
OFF
1 2 3 4 5 6 7 8
ONLY MANUAL RELEASE
ON
OFF
1 2 3 4 5 6 7 8
AUTO AND MANUAL RELEASE
ON
OFF
1 2 3 4 5 6 7 8
DIRECT RELEASE
ON
OFF
1 2 3 4 5 6 7 8
NO DIRECT RELEASE
ON
OFF
1 2 3 4 5 6 7 8
SINGLE MODE
ON
OFF
1 2 3 4 5 6 7 8
DUAL MODE

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 16
9CONNECTION &CABLE AND WIRING SPECIFICATIONS
The µ-FEP has the connections inside back box of the control panel enclosure.
WIRING &CABLE SPECIFICATIONS:
▪Use a pair of twisted cable, this strength the protection against electrical or magnetic field
influences on the cable.
▪Minimal solid copper core diameter, extinguisher line 1,0mm² (AWG 17)
▪Minimal solid copper core diameter, other cables 0,5mm² (AWG 20)
▪Maximum solid copper core diameter other cables 1,5mm² (AWG 16)
▪Maximum wire resistance 3,5 Ω.
▪Maximum cable length of the fire zone and the extinguisher cables is 100 meters
▪Maximum cable length other cables maximum 30 meter
▪General fire, fault, extinguishing release, and ventilation relay are normally open contacts
▪Sounder beacon -1 is stage one and -2 is stage two alarm
▪For remote control panel use the special connector with RS485 data line and + and –voltage.

17
10 TECHNICAL SPECIFICATION
Environment
Ambient Temperature Range
-10 to 50 degrees Celsius
Dust and water rating
IP66
Power related specification
Input voltage
6 to 28 VDC
Maximum power usage
5 Watt
Maximum voltage VFC
30 VDC
Maximum current VFC
1 A
Backup power duration
Typically, 4 hours in idle state
Sounder / beacon voltage main powered mode
20 –22 VDC
Sounder / beacon alarm maximum current
50 mA / 100 mw
Sounder / beacon voltage battery powered mode
9 –11 VDC
Sounder / beacon alarm maximum current
50 mA / 50 mw
Voltage in battery powered mode or when sounder / beacon is off 9 –11 VDC
Voltage in main powered mode and when sounder / beacon is on 20 –22 VDC
Connector and cable specification
Conductor cross section solid (Cross Sectional Area mm²)
0.5 mm² ... 1.5 mm²
Conductor cross section flexible (Cross Sectional Area mm²)
0.5 mm² ... 1.5 mm²
Conductor cross section AWG
20 ... 16
Stripping length
8 mm
Maximum cable length of extinguish and fire zone connections
100 m
Maximum cable length of all other connections
30 m
Extinguisher output specification
End of line component
Diode with anode connected to + connection
Advised diode
1N5400, RL201, SF21
Maximum extinguisher count
5 connected in series
Extinguisher release current
Between 1,3 and 1,6 A
Extinguisher release pulse length
Between 50 and 55 ms
Detection zone, hold and extinguishing release inputs
Normal state
> 8 kΩ < 12 kΩ
Alarm load
< 100 Ω >1.2 kΩ
Zone fault threshold 1
< 100 Ω
Zone fault threshold 2
> 1.2 kΩ < 8 kΩ
Zone fault threshold 3
> 12 kΩ
Alarm resistant
470 Ω
End of line resistant
10 kΩ

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 18
151
11 DEVICES SUPPORTED BY THE µ-FEP
11.1 DETECTION DEVICE SUPPORT
The detector types below have been tested on the µ-FEP and are approved for such
Part no
Type
Brand
ORB-OP-42001-MAR¹
smoke
Apollo
ORB-OH-43001-MAR¹
(optical/heat)
smoke/heat
Apollo
ORB-HT-41002-MAR¹
heat 61°C
Apollo
ORB-HT-41004-MAR¹
heat 73°C
Apollo
ORB-HT-41006-MAR¹
heat 90°C
Apollo
ORB-MB-00001-MAR
standard detector base
Apollo
ORB-OP-02032-APO
optical (non-latching)
Apollo
KG/601CH¹
CO/HT Carbon Monoxide/Heat
FireClass
KG/4B
standard detector base snap-fit to ceiling
FireClass
KG/4B-EM
European mounting box for detector base
FireClass
KG/BU
extinguishing hold button (blue)
K&G
KG/BA
extinguishing release button (yellow)
K&G
11.2 SOUNDER /BEACON DEVICE SUPPORT
Part no
Type
Brand
VTB-32EM-DB-RB/RL VTB ²
sounder beacon
Cranford
Note:
1Device input voltage 9 –24 VDC
2Device input voltage 20 –24 VDC
Always check the specification of the devices before installing them on the µ-FEP.
12 ENCLOSURE SPECIFICATIONS
- outside enclosure : 151 x 80 x 60 mm w x h x d
- protection class : IP 66, 68 - 1,2m (2 hours)
- colour of enclosure : graphite grey RAL 7024
- enclosure material : ABS suitable for outdoor use
- cable gland holes : 9 pre drilled holes

19
13 µ-FEP MAIN WIRING DIAGRAM
The diagram below shows the µ-FEP connections options

User Manual |µ-FEP-EN | November 1, 2020 | version 1.9 20
2 x 0,8 mm
zone 1
2 x 0,8 mm
end of line
resitor
10K
- in/out
led-
+in
+out
- in/out
led-
+in
+out
remote
indicator
zone 2
detector
1 t/m 4
end of line
resitor
10K
- in/out
led-
+in
+out
- in/out
led-
+in
+out
remote
indicator
detector
1 t/m 4
14 µ-FEP FIRE DETECTOR AND WIRING OPTIONS
There are three options for connecting fire detectors to the µ-FEP.
▪Conventional Apollo Orbis fire detectors
▪Fenwal heat detectors
▪Linear cable heat detection
10K 
 
10K 
 
FENWAL FENWAL
LINEAR HEAT DETECTION CABLE
 