JVA ZM20 User manual

Advanced
20-50 Sector Security Electric Fence
Controlling and Monitoring System
Installation and User Manual
JVA ELECTRIC FENCE SYSTEMS
Edition 2.4, 2020
ZM50
ZM20

JVA Z Energizer Range Concept
Thank you for choosing our product. The JVA brand is a range of electric fencing
products carefully selected from leading manufacturers around the world to
meet the needs of perimeter security.
THE JVA Z RANGE ENERGIZER CONCEPT
The JVA Range of Energizers has been collaboratively designed and manufactured
by an international team with over 30 years of electric fence experience earned
in some of the most testing security environments in the world. It aims to provide
the very best low-cost, high-voltage security energizers in the world. They are
compact, integrated and fully programmable electric fence energizers with built-in
alarm units and LCD out and return voltage display. They also have the option of
being controlled from a remote LCD keypad.
State-of-the-
art energizer
design IP4 x
and ABS plastic
Unique LCD
display depicting
fence out and
return voltage
Wall-mountable, robust
energizer housing with easily
detachable PCB chassis for
ease of installation and repair
Unique LCD keypad
option depicting fence
and alarm condition
TWO-YEAR WARRANTY
All JVA products carry a 2-year warranty against defective
components and workmanship. The warranty excludes damage
caused by acts of Nature such as lightning or ooding, power
supply surges, rough handling, malicious action or incorrect wiring.
Please retain your invoice as proof of purchase and
ll in the warranty form on page 46.
2-yr
WARRANTY
JVA ELECTRIC FENCE SYSTEMS

Contents
CONTENTS
INTRODUCTION ............................................................................................... 1
FEATURES AND BENEFITS ............................................................................. 3
CONDITIONS .................................................................................................... 4
SPECIFICATIONS ............................................................................................. 5
EQUIPMENT REQUIREMENTS AND OPTIONS .......................................... 6
Requirements ................................................................................................ 6
Options .......................................................................................................... 6
Safety Warning .............................................................................................. 6
OPERATION ...................................................................................................... 7
Status LED Lights ......................................................................................... 7
LCD Display .................................................................................................. 7
JVA ZM20 Screen Examples. ....................................................................... 8
Control Options ............................................................................................. 9
Control Arbitration ......................................................................................... 9
Control Inputs ................................................................................................ 9
Keypad Control ............................................................................................. 10
Arming/Disarming the Fence Using the Keypad ........................................... 10
When an Alarm Occurs ................................................................................. 11
To Silence the Alarm ..................................................................................... 11
To Disarm ...................................................................................................... 12
To Clear Alarm Memory ................................................................................ 12
Changing the USER PIN ............................................................................... 12
Standby Battery ............................................................................................ 12
Internal Beeper/Keypad Beeper .................................................................... 12
All Keypad Codes ......................................................................................... 13
INSTALLATION ................................................................................................. 14
Installation Steps ........................................................................................... 14
Jumper Conguration .................................................................................... 15
High Voltage Terminals ................................................................................. 15
Fence Wiring Diagrams ................................................................................ 16
Earth Loop Monitoring .............................................................................. 16
Earth Stake Monitoring ............................................................................. 17
No Earth Monitoring ................................................................................. 17
Fence Sector Wiring ................................................................................. 18
Using a Sector Divider (Splitter) ............................................................... 19
Low Voltage Terminals .................................................................................. 20
Low Voltage Wiring Diagrams ....................................................................... 22
Wiring for Recommended 12V DC Energizers ......................................... 22
Mains Energizer Power Wiring ................................................................. 22
External Battery and Charger Wiring for 12V DC Energizers ................... 23
Combining the JVA ZM20 with a JVA Z Series Energizer ......................... 23
JVA ELECTRIC FENCE SYSTEMS

Contents
Low Voltage Wiring ................................................................................... 24
Group Mode congurations ...................................................................... 25
PROGRAMMING OPTIONS ............................................................................. 28
Enter Programming Mode ............................................................................. 28
To Exit Programming Mode ........................................................................... 28
Changing the INSTALLER PIN ..................................................................... 28
Changing an Option ...................................................................................... 28
Programmable Options Table ....................................................................... 29
Programming Options in Detail ..................................................................... 30
Fence Voltage Alarm Level (01xx#) .......................................................... 30
Feed Current Alarm Level (02xx#) ........................................................... 30
Ground Voltage Alarm Level (03xx#) ........................................................ 30
Fence Cut Alarm Level (04xx#) ................................................................ 31
Missed Pulse Count (06xx#) .................................................................... 31
Battery Alarm Voltage (07x#) .................................................................... 32
Siren On Time (08x#) ............................................................................... 32
Siren O󰀨 Time (09x#) ............................................................................... 32
Siren Cycles (10x#) .................................................................................. 33
Input Type (11x#) ...................................................................................... 33
Input 2 Function (12x#) ............................................................................ 33
Gate Delay (13x#) .................................................................................... 33
Chime Mode (14x#) .................................................................................. 34
Binary Options (16x#) ............................................................................... 34
Anti-Bridging Threshold (17x#) ................................................................. 34
Sectors (18x#) .......................................................................................... 35
Auto Re-Arm Time (20x#) ......................................................................... 35
Relay Functions ........................................................................................ 36
Group Mode (26x#) .................................................................................. 37
Keypad Programming ................................................................................... 38
Changing the Keypad Messages and Address ........................................ 38
Keys Used for Changing Messages: ........................................................ 38
Connecting Multiple Keypads to a System ............................................... 39
To Exit Keypad Programming ................................................................... 39
Connecting Multiple Keypads to a system ............................................... 39
Notes Regarding Keypad Conguration ................................................... 40
SECTOR PROGRAMMING METHOD .............................................................. 41
Site Sector Record ........................................................................................ 45
WARRANTY ...................................................................................................... 46
JVA ELECTRIC FENCE SYSTEMS
Contents

JVA ELECTRIC FENCE SYSTEMS
1
Introduction
INTRODUCTION
Please note that although this manual refers to the ZM20, it also applies to the ZM50
which is capable of monitoring up to 50 sectors.
The JVA ZM20 is an advanced security electric fence monitor with the ability to
provide the location of a security breach or fault in the monitored electried fence.
The fault location can be reported as being within 1 of up-to 20 pre-programmed
sectors or as the fault position as a percentage of the total fence length. This allows
for a targeted response by security personnel through manned response or by re-
directing of CCTV cameras.
The JVA ZM20 can reduce the cost of traditional multi-zoned security electric
fences by providing up-to 20 individually reported sectors from one fence energizer/
monitor combination. This can represent a dramatic saving over installing individual
energizers for each zone.
The JVA ZM20 uses digital signal processing to convert power signals into an
accurate distance-to-fault measurement as a percentage of the overall fence length.
When coupled with the JVA
PC based Perimeter Patrol
software, the JVA ZM20 can
identify and report the position
of a fault which can be visually
displayed on a mimic panel
and reported or relayed to
other security management
systems.
The JVA ZM20 is designed
to be coupled with an electric
fence energizer to power the
security electric fence. Unlike
standard security electric
fence energizers, the JVA
ZM20 feeds the fence from
both ‘ends’ which means that
if the fence is cut, the voltage
is maintained on both sides of
An electric fence system
which meets current safety
regulations

JVA ELECTRIC FENCE SYSTEMS
2
Introduction
the open circuit. It also determines the health of the fence by monitoring the voltage,
currents and therefore power owing through the fence. A change in the power ow
can indicate that there is a breach/fault somewhere on the fence. At installation time,
the JVA ZM20 is ‘taught’ the location of the sectors by intentionally placing short
circuits at the joins between sectors. Passive sector dividers can be used to increase
the accuracy of the sector isolation.
By using multiple JVA ZM20’s and synchronised energizers, more than one fence
loop can be monitored in a single installation allowing for vertical zoning and also
providing a degree of redundancy.
The JVA ZM20 has many programmable options which can be adjusted using a
JVA Z series keypad. By correctly setting the alarm threshold levels it is possible
to determine if a fence has been cut or shorted, though only short circuits can be
reported by sector or position.
The JVA ZM20 is fully compatible with JVA Perimeter Patrol for mimic display,
logging, email and more.
The JVA ZM20 is designed to meet or exceed the relevant parts of international
safety standard IEC60335.2.76 by providing complete galvanic isolation between
the fence and low voltage circuits.
The JVA ZM20 is part of the JVA Z series of security products.
Fictitious example of a 20-sector system for Perimeter Patrol
Sector 11
Sector 10
Sector 9
Sector 8
Sector 7 Sector 6 Sector 5 Sector 4 Sector 3 Sector 2 Sector 1
Sector 12 Sector 13 Sector 14
Sector 15
Sector 16
Sector 17
Sector 18 Sector 19 Sector 20

JVA ELECTRIC FENCE SYSTEMS
3
FEATURES AND BENEFITS
●Can split a single fence zone into up-to 20 sectors for more accurate response.
● Displays which sector is shorted, up-to 20 programmable sectors
●Reports the position of a short on the front panel LCD as a percentage of the total
fence length
●Able to be monitored via PC (using Perimeter Patrol software)
●Able to be integrated into third party security management systems at a variety
of levels
●Enables the construction of systems from economical Key Switch operation to
complex PC controlled applications
● Feeds the fence from both ends to increase deterrent and reduce the e󰀨ects of a
cut wire
●User friendly LCD display
●Built into the wall mountable JVA Z series Energizer Enclosure
●Controlled and programmed via a JVA Keypad with similar codes to the JVA Z
Series
●Monitors fence voltage and currents to trigger an alarm if either feed current rises
or voltage falls i.e. load increases or reduces suddenly
● Very short sectors can be accurately dened using the Passive Sector Divider
●Run from 16Vac or 12V DC external source
●Built-in battery charger and 7aH back-up battery; connections also available for
alternative larger external battery and charger
●Controls 12V DC supply to the coupled energizer
●Siren and Strobe switched 12V DC outputs for stand-alone operation
●2 Control Inputs and 3 On-Board Relays with many Programmable Functions for
low level integration with other systems
Features and Benets

JVA ELECTRIC FENCE SYSTEMS
4
Conditions
●The coupled energizer must be compatible with the JVA ZM20. While all JVA
energizers are compatible, the JVA MB8 and JVA MB12 are recommended. If low
voltage monitoring or multi-zoning is also required then the JVA Z14 or JVA Z18 may
be used.
●Energizers with a negative voltage pulse are not suitable
●The JVA ZM20 supports conventional wiring only (not Bi-Polar)
●The coupled energizer output pulse energy must not exceed 18 Joules or be lower
than 3 Joules.
●The maximum impedance of the monitored fence loop which can be accurately
monitored using the JVA ZM20 is 1000 Ohms
●The JVA ZM20 is not yet supported by the JVA GSM interface or by the PAE212
Web Server at the time of publication of this manual (May 2014)
●The JVA ZM20 cannot show a faulted sector if the energizer is operating in low
power mode.
CONDITIONS
PC RUNNING
PERIMETER CONTROL
COMPUTER
GSM MODULE
ZM20 DISPLAYS SECTORS
either or

JVA ELECTRIC FENCE SYSTEMS
5
SPECIFICATIONS
The specications table below outlines the power consumption of the JVA ZM20 and
the acceptable voltage and current ranges for di󰀨erent inputs and outputs.
Specication Name Specication
Internal battery charger oat voltage 14.3Vdc
Internal battery charger charging current 600mA
Power consumption of JVA ZM20 (See Note 1) 100mA at 12.5Vdc
Maximum AC input voltage when internal battery
charger is supplying 580mA
19Vac
Maximum DC energizer current from Energizer powered
output if using 16Vac supply and internal battery
1.5 Amps
Maximum DC energizer current from Energizer powered
output if using external power supply and battery
3 Amps
Maximum voltage on In1, SW2 and Gate inputs
(See Note 2)
5Vdc
Maximum power provided to Siren and Strobe outputs
(See Note 3)
35 Watts
Maximum Fence Voltage 9.9kV
Maximum Fence Current 80 Amps
Maximum live wire loop impedance 1000 Ohm
Maximum fence load (leakage) 10 Kilo Ohm
Sector accuracy (See Note 4) 100m or 0.1% of total
wire length
Note 1: This is the power consumption when none of the powered outputs are
active and the keypad is not connected. The rated power consumption may be lower
depending on relay conguration and alarm states.
Note 2: The control inputs, In1, SW2 and Gate supply their own power (5 volts,
limited to 220µA). If a powered control system is connected to these inputs, the
control voltages must not exceed 5 volts.
Note 3: The rated power is the combined output power of both the Siren and Strobe
outputs. The voltage which can be expected on this output is the battery voltage.
The combined maximum output current of both these outputs is 2.5 Amps. Note that
the maximum output power will drop as battery voltage drops.
Note 4: This may not be achieved on all fences.
Specications

JVA ELECTRIC FENCE SYSTEMS
6
EQUIPMENT REQUIREMENTS AND OPTIONS
Equipment Requirements & Options
Requirements
●A JVA Energizer (JVA MB8 recommended)
●12V rechargeable backup battery
●16Vac power adaptor OR external battery charger
● Security electric fence; standards, insulators, wire etc. wired into sectors.
Some of these items may be included with the JVA ZM20.
Options
●12V Siren and strobe light
●LCD Keypad. (See Notes 1 and 2 below)
● Sector Dividers. (See page 19, “Using a Sector Divider”.)
●Webserver. (See Note 3. below)
●Windows PC
– Windows XP or Windows 7
– PAE 223, USB to keypad bus adaptor
– or PAE212 TCP/IP adaptor
– Perimeter Patrol PC application (JVA ZM20 or Pro version)
Notes
1. While the Keypad is not essential for normal operation, it is always required for
programming options and sectors during installation.
2. Up to 3 Keypads may be used on a JVA ZM20. Each Keypad must have a
unique ID setting.
3. The Webserver allows for remote control using any web enabled device, but
requires the site to have a wired LAN internet connection. WiFi may be used but
will require a WiFi bridge.
For more information on these options please see www.jva-fence.com.au
Safety Warning
●The installer is reminded that high voltages are retained for a while after disarming
the energizer and to wait for at least 10 minutes before opening the case. Should it
be necessary to open the JVA ZM20 case ensure that the energizer is disarmed.
● Before working on the high voltage wiring of an electric fence, it is recommended
that the energizer is disarmed and a short circuit is placed from the fence live wires
to earth. This is a sensible precaution against the energizer being armed while
working on the fence.
● The JVA ZM20 contains patent pending technology, contact JVA for more information.

JVA ELECTRIC FENCE SYSTEMS
7
Operation
OPERATION
Status LED Lights
The status LED’s on the front of the JVA ZM20 allow the user to ascertain quickly
the current status of the unit and if any action needs to be taken. Below is a brief
description of each LED (top to bottom) and the information it conveys.
Power – On whenever the unit has power.
Armed – On when the unit is armed (pulsing)
Fence – On when there is a fence alarm (either channel)
Gate – On when there is a gate alarm
Status – Flashes an error code for service errors. The LCD may also show an
error message.
Status LED
Number of Flashes
Interpretation Corrective \Action
1Not used
216Vac Mains fail Restore mains power
3Low battery, bad battery Charge or replace battery
4PCB service fault Return to repair/service centre
Note: A JVA Slave energizer will
show this error if disconnected
from the Master
LCD Display
The Alpha numeric LCD
display shows the status of
the JVA ZM20 at all times.
While the unit is armed,
pressing # on the keypad will
toggle the display between
status and readings mode.

JVA ELECTRIC FENCE SYSTEMS
8
Operation
JVA ZM20 Screen Examples
Armed
All clear
Fence 7.8 kV
Ground 0.1 kV
Sector 10 of 20
Balance 49.90%
ALARM – Short
Sector 3
ALARM
Gate
Alarm
Multi-sector
Battery 11.5V
AC Fail
Disarmed
Alarm Sect 18
1 – Alarm V
4.5 kV
JVA ZM20
Disarmed
Feed1 2.0A
Feed2 2.0A
ALARM
Fence Cut
ALARM
Ground 1.0kV
Battery 13.2V
AC on
Armed
All clear
ALARM
Energizer Fail
While armed, the LCD display will cycle the following information every energizer
pulse.
Pressing # on the keypad will freeze the current information displayed on the LCD
screen for approximately 10 pulses. Pressing the # key again will cycle the display
to the next information screen.
This screen shows the fence loop balance.
When an alarm occurs the screen will detail the type of
alarm and the sector if applicable.
Various problem conditions can also be displayed, such
as AC fail or low battery.
When the JVA ZM20 is disarmed after any alarm, the
last alarm will be displayed until cleared.
The display also shows the programmable options and
values when in programming mode.

JVA ELECTRIC FENCE SYSTEMS
9
Control Options
The JVA ZM20 may be controlled i.e. armed and disarmed using a:
●Key Switch or Remote Switch connected to the control input (IN1)
●Remote Control Radio Receiver connected to IN1
●JVA Z Series Keypad
●JVA Webserver
●Windows PC running JVA Perimeter Patrol (JVA ZM20 or Pro versions)
●Low Level Interface (wired to control inputs and relay outputs) from a third part
security alarm panel or Physical Security Information System (PSIM)
●High Level Interface.
Note: More than 1 method may be used in the one installation.
Control Arbitration
If an installation contains two ways to control the JVA ZM20/Energizer, then the
most recent control signal will determine the Armed/Disarmed state. For example if
the JVA ZM20 is armed via the keypad and then disarmed at the control input (IN1)
it will disarm.
Energizers that contain more than one control input (for example an Armed/
Disarmed input and a Gate input) will use all of the input values when either input
changes. For example, an energizer is disarmed using IN1 and then armed using
the keypad. If the Gate input changes, the energizer will disarm as the IN1 setting
is still set to Disarmed.
The higher level control methods such as the Webserver or PC control software may
override the Control Input and Keypad’s methods, depending on the options used.
If it is necessary to make sure that the fence is disarmed, e.g. for maintenance,
using the key switch or keypad alone may not guarantee that the fence will remain
disarmed.
Control Inputs
The JVA ZM20 may have a single Key Switch mounted on the right hand side of
the cabinet which may be used to arm and disarm the security electric fence to
which it is connected. This switch is useful for the simplest implementations where
no keypad or PC control program is used. It may be disabled by the installer, by
removing the lead from socket J2 on the board.
When switched on via the Key Switch (or a switch connected to IN1) the JVA ZM20
will power up the energizer to which it is coupled and begin monitoring the fence.
The screen will change to display the Armed status and any faults or alarms. If
there is a fence fault the JVA ZM20 will go into an alarm condition, the internal
beeper will sound (if it has not been inhibited) and any siren and strobe connected
to the JVA ZM20 will be triggered.
Operation

JVA ELECTRIC FENCE SYSTEMS
10
Operation
The sector in which the fault has occurred will be displayed if the JVA ZM20 has
been correctly calibrated.
Switching the Key Switch o󰀨 will disarm the JVA ZM20, although it will continue to
display the last alarm and sector.
Keypad Control
The JVA ZM20 uses the same keypad as the JVA Z Series
energizers and is controlled using similar keypad codes.
The Keypad with Version 2 or higher software will display the
Fence voltage and Ground voltage and the fence currents.
Keypads with older software do not show currents and sectors.
The keypad can be upgraded by your nearest JVA dealer.
Alarms and problem conditions will also be displayed.
The Keypad has two LED lights:
Power On with Mains power;
O with Mains fail; ashes on low battery
Armed On when the energizer is armed (pulsing); ashes when in low power mode.
All other indications are given via messages on the screen.
Whenever the keypad displays: ALARM ZONE: - Press # to see the sector a󰀨ected:
Zone 1 On when there is a Fence Fault
Zone 2 On when there is a Ground Fault
Zone 3 On when the Gate Input is in an alarm condition
Other messages include:
●FAULTED ZONE
●SYSTEM TROUBLE
Pressing the [#] key will reveal more information, such as the name of the zone (e.g.
North Fence) or the actual system trouble, for example AC Fail.
Note: There is no panic function currently implemented (June 2012).
Arming/Disarming the Fence Using the Keypad
Enter USER PIN (Personal Identication Number: four digits long) and push the
# key. Make sure the red ARM light comes on and the keypad beeps twice to
conrm that the system is armed.
The fence will power up and if all is well (no faults) the system will be ready to deter
and detect.
To disarm the system enter USER PIN and press #.
Note: If there is an alarm sounding the USER PIN will need to be entered twice:
once to silence the alarm and once more to disarm.

JVA ELECTRIC FENCE SYSTEMS
11
Operation
When an Alarm Occurs
An Alarm will occur if there is a fault on the fence caused by a short or an open circuit
(cut) while the system is armed. The siren will sound and the strobe light will come
on. The Internal Beeper and the Keypad may also sound, depending on how your
system is congured.
There are 7 ways the JVA ZM20 will detect a fence fault (See the Programmable
Options Table on page 29):
1) The energizer fails to re at all (Energizer Fail)
2) Fence voltage falls ( Low Voltage – see Option 1)
3) Fence currents rise (Fence Short – Option 2)
4) Fence currents rise and then the position moves (Fence Multi-Sector Short)
5) The ground voltage rises (Ground alarm – Option 3)
6) Fence current balance is disturbed without a short (Fence Cut – Option 4)
7) Fence currents rise or fall but do not trigger a Short or Cut (Anti-Bridging – Option 17)
Of these the Fence Short is the primary alarm and the one which enables the sector to
be detected. Some of these methods can be disabled, see the programming options.
The Siren and Keypad Beeper will sound and any relays assigned to this Fence Alarm
will turn on. If the energizer is connected to a building alarm system for monitoring, an
alarm signal may be sent to the Alarm Company monitoring the alarm system.
An alarm will also sound if Control Input 2 is assigned to the Gate function and the
Gate Input is opened for longer than the Gate Delay Time.
After the siren has cycled on and o󰀨 according to the times and numbers set according
to the options table (See Programmable Options Table on page 29), the siren will
stop sounding. The On and O󰀨 timing is able to be set in the options. The Strobe will
remain on. After a further delay (Auto Rearm Time) the siren will again respond to the
next alarm condition with a new set of On/O󰀨 cycles.
If the alarm condition is removed, the siren will stop after the end of the current On
time (Siren On Time).
If the siren is silenced (by entering USER PIN#) then the siren will enter the next O󰀨
cycle (Siren O󰀨 Time). If the alarm condition is still present (voltage is low) the siren
will sound again after the pre-set O󰀨 time. If the alarm condition is not present the
energizer is instantly rearmed, irrespective of the Auto-Rearm setting.
To Silence the Alarm
If there is no Keypad attached, simply disarm the JVA ZM20 using the Key Switch.
Using a Keypad, enter USER PIN and press #. This will silence the alarm but not
disarm the system; the armed light will still be on. The system will be ready for the
next alarm.
Note: This silence function will not operate if the JVA ZM20 is part of a JVA Z series
in group mode.
The last alarmed Sector will still be displayed on the front panel LED and the Keypad.
The Siren and Strobe are ready to respond again if triggered.

JVA ELECTRIC FENCE SYSTEMS
12
To Disarm
If there is no Keypad attached simply disarm the JVA ZM20 using the Key Switch.
Using a Keypad, disarm the system by entering USER PIN and press #.
The Fence or Gate light on the JVA ZM20 will remain on to show the Alarm memory.
This can be cleared by entering the Clear Alarm Memory command *1#. The Alarm
Memory will also be cleared when the JVA ZM20 next Arms.
To Clear Alarm Memory
After an alarm occurs pressing *1#, will clear the alarm memory. If the problem still
exists the unit will alarm again.
Changing the USER PIN
Enter the current 4 digit USER PIN and press *0#. This enters User Programming
Mode.
Enter new user PIN (must be 4 digits) and then #.
Press *# to exit User Programming Mode.
Make sure that the new USER PIN works by using it to arm the energizer.
The default USER PIN is 1234.
For example, the following Keypad sequence will change the USER PIN to 8015
from the default PIN:
1 2 3 4 * 0 # 8 0 1 5 # * #
Standby Battery
Should there be a loss of mains power, the Power Light on the Keypad will go o󰀨. The
Status LED on the JVA ZM20 front panel will ash twice and the Keypad will show
Trouble – AC Fail.
If the loss of power is prolonged, the battery may become discharged and become
ine󰀨ective. The Power Light on the keypad will start to ash indicating that the battery
charge is low. The status LED on the JVA ZM20 front panel will ash three times and
the Keypad will show Trouble – Low Battery.
If the standby battery requires replacement, the Status LED on the Energizer will
ash 3 times even after the mains power has been restored.
Internal Beeper/Keypad Beeper
Depending on the Chime Mode setting, the Internal Beeper and Keypad Beeper will
sound when there is a fence alarm, a gate alarm, a general alarm or a door chime. On
at battery the Keypad will always beep 4 times before the energizer automatically
enters Low Power mode to preserve the battery. On AC Fail it will not beep.
Note: The Internal Beeper also beeps at power up.
Operation

JVA ELECTRIC FENCE SYSTEMS
13
All Keypad Codes
Function Key Sequence
Arm/Disarm [USER PIN][#]
Silence an alarm (Single Zone system only) [USER PIN][#]
Start programming mode in the JVA Z series energizer [INSTALLER PIN][*] [0] [#]
Start programming mode for the keypad [INSTALLER PIN][*] [0] [1] [#]
Exit any programming mode [*] [#]
Change a USER PIN [USER PIN][*][0][#][New PIN]#
Change the INSTALLER PIN [0] [0] [New INSTALLER PIN][#]
Arm All Zones (Multi-zone groups) [USER PIN][*][1][0][#]
Arm Zone 1 (Master) [USER PIN][*][1][1][#]
Arm Zone 2 (On JVA Z28 or slave in group) [USER PIN][*][1][2][#]
Disarm All Zones [USER PIN][*][2][0][#]
Disarm Zone 1 or Master [USER PIN][*][2][1][#]
Disarm Zone 2 (On JVA Z28 or slave in group) [USER PIN][*][2][2][#]
Switch to Low Power Mode (all zones) [USER PIN][*][4][1][#]
Switch to High Power Mode (all zones) [USER PIN][*][4][2][#]
Arm Gate Circuits only [USER PIN][*][4][#]
To change the Keypad messages to English [*][3][1][#]
To change the Keypad messages to Spanish [*][3][2][#] (not well supported yet)
Keypad Audible Feedback toggle [*] [5] [1] [#]
Keypad alarm beeper (Chime) On/O󰀨 [*] [5] [3] [#]
Keypad Error Tones toggle On/O󰀨 [*] [5] [4] [#]
Backlight toggle On/O󰀨 [*] [8] [#]
Display Keypad Model [*] [9] [#]
Analyse Group [*][6][8][#]
Reset and display rmware version number [USER PIN][*][6][8][#]
Reset and return to factory defaults [INSTALLER PIN][*] [6] [8] [#]
Siren test [*] [6] [3] [#]
Battery test [*] [6] [4] [#]
Show Balance [*] [6] [5] [#]
Clear Alarm memory [*] [1] [#]
Operation

JVA ELECTRIC FENCE SYSTEMS
14
Installation
INSTALLATION
It is recommended that all installations are performed by qualied technicians.
Installation Steps
1. Read the entire JVA ZM20 and the relevant energizers manuals.
2. Design and build the fence. This is beyond the scope of this manual. Users are
advised to consult their distributor for assistance if required.
3. Decide where the Energizer, JVA ZM20 and Keypad are to be mounted. If on an
external wall they should be housed within an equipment box and not in direct
sunlight.
4. Remove the lid of the JVA ZM20 using a 5mm Hex Key.
5. Remove the JVA ZM20 PCB chassis from the housing by removing the two
screws at the top corners.
6. Mount the housing by using 4 screws through the rear of the box. The box must
be mounted on a wall in such a way that all of the 4 holes in the rear of the case
are against the mounting surface.
7. Replace the PCB chassis.
8. If using a keypad, remove the rear housing of the keypad and x it onto the wall.
9. Wire the low voltage cables to the PCB terminals.
10. Wire the high voltage cable to the PCB terminals.
11. Set the Jumpers as required.
12. Seal the cable entry area with neutral cure silicon sealant RTV.
13. Fit the battery leads to the battery. The Status LED should be blinking twice to
show mains fail.
14. The energizer is designed not to start when rst powered up irrespective of the
state of the Control Inputs.
15. Replace the front cover (lid).
16. Turn AC power on.
17. Type *68# (if keypad used.)
18. Arm the JVA ZM20 and Switch on the energizer. The LCD display will now show
the fence voltage.
19. Find and remove any faults on the fence.
20. Balance the JVA ZM20.
21. Program the sector split positions.
22. Test that a short in any sector puts the JVA ZM20 into alarm and shows the
correct Sector.
Note:
1. If using a JVA MB series energizer with the JVA ZM20, turn the energizer on
using the front panel On/O󰀨 tact switch immediately after arming the JVA ZM20.
As the JVA ZM20 controls 12V DC power to the MB energizer, it cannot be
switched on before the JVA ZM20. Since JVA MB series energizers remember
their last state on power fail, they will power on again when next the JVA ZM20
applies 12V DC power. You will not need to use the MB On/O󰀨 switch again.

JVA ELECTRIC FENCE SYSTEMS
15
Installation
Jumper Conguration
The JVA ZM20 is equipped with three jumpers, two of which (J3 and J4) operate in
an identical fashion to those on the JVA Z14. The third jumper, J5 will suppress the
beeper on the JVA ZM20 when tted.
These are located in the top left corner of the PCB.
Jumper Function Purpose
J3 Inhibit Mains fail error. J3 is tted to inhibit Mains fail errors if the
intention is to operate the ZM20 on DC only (as in
solar power systems).
J4 Factory default jumper
O󰀨 to return Programmable
Options to factory defaults
on power up.
If the ZM20 needs to be defaulted to factory
settings, remove all power (AC and battery) and
remove the J4 jumper. Reapply the mains and the
battery power. Reapply the J4 jumper and the JVA
ZM20 unit will be reset to default settings.
J5 Inhibit Internal Beeper Fitted to inhibit the internal beeper, irrespective of
any option setting.
J6 Energizer Power Selection If the ZM20 has a 16Vac supply plus internal
battery tted and the energizer is a JVA MB8, set
J6 to the 24V setting. If using an external battery
set J6 to the 12V setting.
High Voltage Terminals
Description of high voltage terminals (Left to Right)
EHT In Connect the high voltage output of the energizer to this terminal only.
Feed 1 Connect the one end (feed) of the fence loop to this terminal.
Feed 2 Connect the other end (return) of the fence to this terminal. The live wires form a
complete loop from Feed 1 to Feed 2. The fence voltage is measured from this
terminal.
Return This terminal is connected internally to Feed 2. It is not normally used.
Ground
Ref
Reference ground connection. Please refer to diagrams Earth Loop Monitoring,
Earth Stake Monitoring and No Earth Monitoring (pages 16 and 17) for
information on how to congure this input.
Ground Main fence earth. Please refer to diagrams Earth Loop Monitoring, Earth Stake
Monitoring and No Earth Monitoring for information on how to congure this input.

JVA ELECTRIC FENCE SYSTEMS
16
Fence Wiring Diagrams
There are a number of ways the fence wires can be connected to a JVA ZM20. The
following diagrams will outline di󰀨erent ways the ground circuit can be congured
and what the benets of each are.
Earth Loop Monitoring
The setup pictured below will detect if the ground wire has been cut. Connect the
Ground Reference input to the Energizer Earth, and the Ground input to the other
end of the Earth Fence Loop.
If the Fence Ground Loop is cut, induction will raise the measured ground voltage
and trigger an alarm.
Earth
Live 1
Live 2
Earth
Installation