Nemtek MERLIN STEALTH MASTER User guide

INSTALLERS MANUAL
Revision 1.5
23 February 2007
GROUP OF COMPANIES
MERLIN STEALTH –Electric Fence Energizer

2
MERLIN STEALTH: INSTALLERS MANUAL Table of Contents
INTRODUCTION…..…………………………………………………………………… 3
INSTALLER OPTIONS…...………………………………………………….…………….. 4-11
ALARM SETTING EXAMPLES…………………………………………….……………... 12
MOUNTING / BATTERY REPLACEMENT DRAWING ……………..…………….. 13
LOW VOLTAGE WIRING DIAGRAM ………………….……………..…………….. 14
HIGH VOLTAGE WIRING DIAGRAM M15S & M18S……………..…………….. 15
HIGH VOLTAGE WIRING DIAGRAM M25S & M28S……………..…………….. 16
PC BOARD LAYOUT & SERVICE CONDITIONS DIAGRAM……..…………….. 17
PC BOARD REPLACEMENT PROCEDURES……………..………………………….. 18
INSTALLER NOTES…………………………………………..……………..…………….. 19-23
DOCUMENT REVISION HISTORY…………………………………………………. 24

3
MERLIN STEALTH: Introduction
INTRODUCTION
The Merlin Stealth Range of Energizers is functionally very similar to the previous generation of
Merlin energizers.
It is recommended that a suitable training course is attended before altering the functionality of
the energizer. Ensure that municipal by-laws are adhered to.
The Merlin Stealth Range includes earth-loop monitoring and has an RS232 port for diagnostics
and connectivity. The embedded software incorporated in the unit may be revised from time to
time. For the latest features or revisions please visit our web site at:
www.nemtek.com
To load factory default settings: Unplug the energizer from the mains and disconnect one of the
battery terminals. Reconnect the battery terminal and apply mains to the energizer. Within 65
seconds of reconnecting the battery terminal, the key sequence 2 3 8 9 # must be entered on
the keypad. In each of the appropriate tables the shaded row indicates the factory default
setting.
The Merlin Stealth Energizer™ may be networked. This can be done for either multiple energizer
synchronization or for controlling and monitoring a large number of energizers. An advanced
installers course is compulsory for installers wanting to access these features.
Electric fencing can be lethal. Please inform the user to avoid head contact with the
fence. Explain to the user the options of current limiting resistors and the low-voltage
operation of the energizer.
DANGER:
DO NOT PRESS THE SWITCH (WITH THE SPRING ATTACHED) WITH THE LID OPEN!
DO NOT MODIFY OR ALTER THE UNIT

4
MERLIN STEALTH
Installer Options
ENTER PROGRAMMING MODE
Before any of the installer options can be changed, the unit must be in programming mode. To
do so, enter the 6 digit installer PIN followed by the * 0 # keys.
•The keypad will beep seven times if the PIN was correct. The unit is now in
programming mode.
•If no key is pressed for four minutes, the system will automatically exit the programming
mode. It is better to press the *# key sequence to exit the programming mode.
•The default installer PIN is 0 1 2 3 4 5
EXIT PROGRAMMING MODE
When finished it is important to exit the programming mode. While in programming mode, you
will be unable to access any user functions from the keypad. Exit from programming mode is
acknowledged by seven beeps.
CHANGE INSTALLER PIN
The default installer PIN can be changed by pressing the 0key twice, followed by the new PIN
and the #key. The keypad will beep six times if the pin was accepted.
•The new PIN must be 6 digits long.
•If you cannot remember the PIN, default the unit and use 0 1 2 3 4 5 as the PIN.
Note. On changing a parameter the keypad will beep in response.
1 beep: fence associated parameter.
2 beeps: gate related parameter.
3 beeps: alarm timing parameter/gate2 input function etc.
4 beeps: battery related.

5
MERLIN STEALTH Installer Options
SIREN-ON TIME
The time that the siren will be on for, can be changed by pressing
the 0key, followed by the 1key. Select the desired time from the table and press the
corresponding number from 0to 9followed by
the #key. The keypad will beep three times to indicate that the new setting
was accepted.
Example: To change the Siren-On Time to 4 minutes,
enter 0 1 8 #
ALARM-OFF TIME
The time for all alarm events to be ignored after the Siren-On Time has elapsed, can be changed
by pressing the 0key followed by the 2 key. Select the desired time from the table and press
the corresponding number from 0to 9followed by the #key. The keypad will beep three times
to indicate that the new setting was accepted.
Example: To change the Siren-Off Time to 2 minutes,
enter 0 2 6 #
NUMBER OF ALARM EVENTS BEFORE RE-
ARM
The number of alarm events that are allowed before the RE-ARM timer becomes active. This can
be changed by pressing the 0key, followed by the 3key. Select the desired number of times
from the table and press the corresponding number from 0to 9followed by the #key. The
keypad will beep three times to indicate that the new setting was accepted.
02Sec
15 Sec
210 Sec
330 Sec
445 Sec
51 Min
62 Min
73 Min
84 Min
94 min 30 sec
02Sec
15 Sec
210 Sec
330 Sec
445 Sec
51 Min
62 Min
73 Min
84 Min
94 min 30 sec

6
MERLIN STEALTH Installer Options
Example: To change the Number of Events allowed to
8, enter 0 3 7 #
ALARM RE-ARM TIME
The alarm annunciation process may be repeated after a re-arm period. The re-arm time for the
system can be changed by pressing the 2key, followed by the 0key. Select the desired re-arm
time from the table and press the corresponding number from 0to 9followed by the #key. The
keypad will beep three times to indicate that the new setting was accepted. Do not alter without
understanding the ramifications! On turning the system OFF and On again manually all alarm
timers and counters are reset. Please see attached ALARM SETTING EXAMPLES.
Example: To change the re-arm time to 4days, enter 2 0 6#
GATE 1 DELAY TIME
The time delay for the gate to stay open before the alarm is activated, can be changed by
pressing the 0key, followed by the 4key. Select the desired time delay from the table and
press the corresponding number from 0 to 9 followed by the #key. The keypad will beep twice
to indicate that the new setting was accepted.
Example: To change the Gate Delay Time to 1 Minute,
enter 0 4 5#
01 Event
12 Events
23 Events
34 Events
45 Events
56 Events
67 Events
78 Events
89 Events
916 Events
020 Sec
16 Hr
212 Hr
324 Hr
42 Days
53 Days
64Days
75Days
86Days
97.7 Days
02 Sec
15 Sec
210 Sec
330 Sec
445 Sec
51 Min
62 Min
73 Min
84 Min
94 Min 30 Sec

7
MERLIN STEALTH Installer Options
GATE 2 DELAY TIME
The time delay for the gate to stay open before the alarm is activated, can be changed by
pressing the 1key, followed by the 2key. Select the desired time delay from the table and
press the corresponding number from 0 to 9 followed by the #key. The keypad will beep twice
to indicate that the new setting was accepted.
Example: To change the Gate Delay Time to 4 minutes,
enter 12 8#
HIGH POWER FENCE VOLTAGE
The open circuit fence voltage can be changed by pressing the 0key, followed by the 5key.
Select the desired voltage from the table and press the corresponding number from 0to 9
followed by the #key. The keypad will beep once to indicate that the setting was accepted.
Example: To change open circuit Fence Voltage to 6kV6 on a M15, enter 0 5 2 #
M15 & M25 M18 & M28
Typical readings Typical readings
02 Sec
15 Sec
210 Sec
330 Sec
445 Sec
51 Min
62 Min
73 Min
84 Min
94 Min 30 Sec
V peak
open
circuit.
Volts
V peak
500 ohm
load
Energy
(500 ohm
load) J
06000 3900 2.50
16300 4150 2.80
26600 4300 3.00
37100 4500 3.20
47500 4850 3.70
57750 5050 4.00
67900 5200 4.20
78100 5300 4.40
88300 5450 4.60
98500 5600 4.80
V peak
open
circuit.
Volts
V peak
500 ohm
load
Energy
(500 ohm
load) J
08000 auto 7100 6.8
17000 4500 3.20
27700 4950 3.70
38200 5300 4.20
48500 5650 4.80
58900 5950 5.20
69200 6850 6.40
79300 7100 6.80
89300 7350 7.30
99300 7600 7.60

8
MERLIN STEALTH Installer Options
LOW POWER FENCE VOLTAGE
The open circuit low power fence voltage can be changed by pressing the 0key, followed by the
6key. Select the desired voltage from the table and press the corresponding number from 0to
9followed by the #key. The keypad will beep once to indicate that the new setting was
accepted.
Example: To change the open circuit Low Power Fence Voltage to 1450 Volts, enter 0 6 3#
Typical readings
FENCE ALARM VOLTAGE (HV Mode)
The fence alarm voltage (in HV mode) can be changed by pressing the 1key, followed by the 4
key. Select the desired voltage from the table and press the corresponding number from 0to 9
followed by the #key. The keypad will beep once to indicate that the new setting was accepted.
Approx. Fence Alarm
Voltage (kV) Approx. Fence Check Voltage (kV)*
012.3
11.2 2.7
21.7 3.0
32.0 3.2
42.3 3.7
52.5 4.3
62.7 4.8
72.8 5.4
83.1 5.8
93.2 6.0
*M28 and M25 use different check voltages.
V peak open
circuit Volts V peak 500 ohm Energy (500 ohm load) J
01250 775 0.11
11350 825 0.12
21400 900 0.14
31450 950 0.16
41550 975 0.17
51650 1000 0.18
61700 1050 0.21
71750 1100 0.22
81850 1150 0.24
91900 1200 0.26

9
MERLIN STEALTH Installer Options
STROBE LIGHT FUNCTION
The strobe light outputs can be used for alarm indication or fence On/Off ( Zone 1) and high/low
voltage (Zone 2) indication. This can be changed by pressing the 1key followed by the 0key.
Select the desired function from the table and press the corresponding number from 0or 1
followed by the #key. The keypad will beep three times to indicate that the new setting was
accepted.
Example: To change the Strobe Light Function so that the strobe
light switches on whenever the fence is on, enter 1 0 1 #
The default Strobe Light Function is option 0, the strobe light output indicating an alarm
condition.
MAGNETIC SWITCH FUNCTION
The magnetic switch may be disabled if a keypad or remote On/Off switch is used. This can be
changed by pressing the 1key followed by the 0key followed by the desired 2 or 3.
Example: To disable the magnetic switch enter 1 0 2 #
By default the magnetic switch is functional.
KEYPAD DETECT FUNCTION (NOT AVAILABLE)
The energizer can be configured to detect if one or more keypads is present. The keypad detect
function can be altered by pressing the 1key, followed by the 0key. Select the desired state
from the table and press the corresponding number from 6to 7followed by the #key. The
keypad will beep twice to indicate that the new setting was accepted.
Example: To enable the keypad detect function,
enter 1 0 6 # (detection period is 15 seconds)
By default the Keypad detect is off.
0Strobe light = Alarm
1Strobe light = fence ON
2Magnetic Switch disabled
3Magnetic Switch enabled
6Keypad detect on
7Keypad detect off

10
MERLIN STEALTH Installer Options
FENCE VOLTAGE CONTROL
The energizer can be configured to change between High and Low voltage modes depending on
the Gate2 input. The fence voltage control can be altered by pressing the 1key, followed by the
3key. Select the desired function from the table and press the corresponding number from 0or
1followed by the #key. The keypad will beep three to indicate that the new setting was
accepted.
Example: To enable the fence voltage control via
Gate 2 input,enter 1 3 0 #
BATTERY SERVICE LEVEL NORMAL OPERATION
During normal operation the battery level is monitored and may result in a service indication. The
sensitivity or level at which the service level indication is given may be adjusted by the installer.
The battery service level for the system can be changed by pressing the 1key, followed by the 6
key. Select the desired level time from the table and press the corresponding number from 0to
9followed by the #key. The keypad will beep three times to indicate that the new setting was
accepted. Do not alter without understanding the ramifications!
Note. The unit will protect the battery by disconnecting it from the
Energizer as soon as the voltage drops below a factory set level. The
Installer has no control over this protection.
0Fence Voltage Control
1Gate Function
010.5 Volts
110.8 Volts
211.1 Volts
311.4Volts
411.7Volts
512.0Volts
612.3Volts
712.6Volts
812.9Volts
913.2Volts

11
MERLIN STEALTH Installer Options
BATTERY AUTO-CHECK ENABLE AND LEVEL
The energizer may be configured to do an automatic battery check at regular intervals. The
mains is disabled for 20 minutes ( there is no visible indication of this unless the diagnostics port
is used) and the battery voltage monitored. Should the battery voltage fall below the acceptable
level a service indication will result. The auto-check voltage for the system can be changed by
pressing the 1key, followed by the 7key. Select the desired check voltage from the table and
press the corresponding number from 1to 9followed by the #key. The keypad will beep three
times to indicate that the new setting was accepted. Do not alter without understanding the
ramifications!Keying in a 0disables this function.
BATTERY AUTO-CHECK REPEAT INTERVAL
The repeat interval for the battery auto-check can be changed by pressing the 1key, followed
by the 8key. Select the desired interval from the table and press the corresponding number
from 0to 9followed by the #key. The keypad will beep three times to
indicate that the new setting was accepted. Do not alter without
understanding the ramifications! Note that on loading factory default
values the battery will not be tested for the first week irrespective of the
interval that has been set.
0No auto-check
110.5Volts
210.8Volts
311.1Volts
411.4Volts
511.7Volts
611.8Volts
711.9Volts
812.0Volts
912.1Volts
06 Hr
112 Hr
224 Hr
32 Days
43 Days
54 Days
65 Days
76 Days
87 Days
97.7 Days

12
MERLIN STEALTH Installer Options
LID ALARM FUNCTION
With the code 300# the energizer can be programmed to give a tamper alarm when the front lid
is removed while the energizer is operating. In default condition no alarm is given.
Once the function is programmed it is stored in memory and if the function is not required
anymore it can be programmed out with the same 300# code.
Check after programming that the function operates as required.
REMOTE ON/OFF ABSOLUTE OR TRANSISTION SENSITIVE
In the default condition the energizer will change its on/off state every time when the remote
on/off input is opened or closed.
The energizer can be programmed with the code 301# so that the energizer will always switch
on when the remote input is opened and always switch off when the input is closed.
Once programmed the function can be changed back in programming mode to the default
condition with the same 301# code.
Check after programming that the function operates as required.

13

14
12V 7AH Battery
12V 7AH Battery
STEP 1: Disconnect mains. Open the lid by
removing the two cap screws. Unplug the
battery terminals if connected.
STEP 2: Remove screws
and battery bracket
STEP 3: Remove battery
*Dispose of old battery according to legal requirements.
Do NOT replace with non
-
rechargeable battery!!
STEP 4: Drill 4 x 8mm holes for mounting the
unit. Four nail-in anchors are supplied with
the unit. Insert the plastic sleeve of the nail-
in
anchor from the inside of the box and then
hammer the screw in with a screw driver and
hammer.
NB: Always insert the plastic sleeve from the
inside of the box.
STEP 5: Connect the Black battery lead to the
negative terminal of the battery.
Insert battery with the positive terminal to the
top.
STEP 6: Place the battery br
acket back and
fasten the screws.
STEP 7: Connect the Red battery lead to the
positive terminal of the battery.
Close the lid by hooking the top of the lid in
first and then fasten the bottom down with the
two cap screws. Apply mains to the unit.
MERLIN STEALTH Mounting / Battery Replacement Procedures
*Energizer to be mounted vertically against a flat surface, in well ventilated area.
*Avoid prolonged exposure to direct sunlight

15
12V 7AH Battery
RS232
PORT
Gate 1
Input
Gate 2
Input
Remote
On/Off
+ -
Aux
12VDC
+ -
Zone 1
Strobe
+ -
Zone 2
Strobe
+ -
Siren
Output
+ - Data
Remote
Keypad
+
+
+
-
-
-
Magnetic
Gate
Switch
Magnetic
Gate
Switch
Remote
On/Off
Switch Strobe
Light
Zone 2
Strobe
Light
Zone 1 20W
12VDC
Siren
RelayBoard
RadioAlarm
+ Data
-
+ Data
-
Keypad
Keypad
Merlin
Fence
Monitor
12VDC
MERLIN STEALTH
Low voltage wiring diagram

16
FENCE 1
FENCE 1
FENCE 1
RETURN
11
CCOMM
EARTH
FENCE
OUT
RETURN
11
CCOMM
EARTH
FENCE
OUT
RETURN
11
CCOMM
EARTH
FENCE
OUT
LIVE WIRE CONNECTION
EARTH WIRE CONNECTION
WITH EARTH LOOP MONITORING
EARTH WIRE CONNECTION WITHOUT
EARTH LOOP MONITORING
NOTE:
The installation and erection of the electric
fence to be done in South Africa according
to SANS 10222-3 latest edition. In other
countries according to the local
specifications.
Preferred connection method
The earth spikes are connected to one
wire of the fence and the wire is only
coupled to the other fence earth wires at
the main earth spike
Fence earth wire to
be connected from
the main earth spike,
NOT straight from
the e
nergizer
Main earth spike –
install close to the
energizer
Alternative connection method
Fence earth wire to be connected from the
main earth spike, NOT straight from the
energizer
Main earth spike –install close to the
energizer
MERLIN STEALTH
High voltage wiring diagram M15S & M18S

17
FENCE 1
FENCE 1
FENCE 1
FENCE 2
FENCE 2
FENCE 2
RETURN
1
2
1
2
CCOMM
EARTH
FENCE
OUT
RETURN
1
2
1
2
CCOMM
EARTH
FENCE
OUT
RETURN
1
2
1
2
CCOMM
EARTH
FENCE
OUT
LIVE WIRE CONNECTION
EARTH WIRE CONNECTION WITH
EARTH LOOP MONITORING
EARTH WIRE CONNECTION WITHOUT
EARTH LOOP MONITORING
NOTE:
The installation and erection of the electric
fence to be done in South Africa according
to SANS 10222-3 latest edition. In other
countries according to the local
specifications.
Preferred connection method
The earth spikes are connected to one wire of the
fence and the wire is only coupled to the other
fence earth wires at the main earth spike
Fence earth wire to be connected
from the main earth spike, NOT
straight from the energizer
Main earth spike –
install
close to the energizer
Alternative connection method
Fence earth wire to be connected from the
main earth spike, NOT straight from the
energizer
Main earth
spike –install
close to the
energizer
MERLIN STEALTH
High voltage wiring diagram M25S & M28S

18
FUSE DESCRIPTION & FAULT SYMPTOMS
F1 CHARGER FUSE (4A FAST BLOW)
If blown the power LED will be off while Mains is present. When the
battery goes flat a service alarm will be given and unit will stop operating.
Check Mains supply before replacing.
F2 AUXILARY SUPPLY FUSE (2A FAST BLOW)
If blown the Keypad will be off, Siren and Strobe light will not operate.
Check Siren, Strobe and Keypad as well as their wiring before replacing.
F3 BATTERY FUSE (2A FAST BLOW)
If blown the unit will switch off immediately when Mains fails.
Check Battery and Battery Leads before replacing.
MERLIN STEALTH PC Board Layout & Service Conditions

19
12V 7AH Battery
12V 7AH Battery
STEP 1: Disconnect mains and battery
terminals if connected
STEP 2: Remove screws
STEP 3: Remove all connectors from
PC Board
STEP 4: Gently pull PC Board straight
up to remove (connections on the
back)
STEP 5: Gently push PC Board back into
place
Take care that the spade connectors are
correctly positioned before pushing the
PC Board into place.
Also ensure that the opto-
couplers (look
like LED’s) are correctly positioned
before pushing the PC Board into place
STEP6: Insert and tighten all screws
STEP 7: Reconnect
all connectors to
PC Board
STEP 8: Reconnect battery terminals
REMOVAL
:
REPLACEMENT
:
MERLIN STEALTH
PC Board Replacement Procedures

20
MERLIN STEALTH Installer Notes
INSTALLATION NOTES:
1. Keep the wires to the fence separate from the keypad/gate/siren/strobe/
mains/remote wiring.
2. Do not try and modify the unit. Any unauthorised modifications will null and void
the warranty and possibly render the unit illegal.
3. If the remote On/Off facility is used, the wire between the remote switch and the
energizer can be up to a 100m. For security reasons it is better to use an intelligent
FOB on the keypad bus.
4. A remote receiver can obtain 12VDC from the keypad bus. Current consumption
must not exceed 1 Amps. This is not sufficient to supply power for an armed
response transmitter.
5. The siren and strobe light together must not draw more than 1.75Amps.
6. To connect a radio alarm transmitter or alarm panel to the energizer use an
isolation relay between the strobe light output and the panel. Never use the
energizer battery to power a radio alarm transmitter or alarm panel.
7. The wire between the magnetic gate switch and the energizer can be up to a
100m but must not run in parallel with the fence wires. The gate switch must be
open circuit if the gate is open.
8. The remote keypad cable must not exceed a 100m in total. Avoid running this
cable in parallel with any fence (high voltage) wires.
9. You can connect a total of four keypads or FOB units to one energizer. Each must
have a unique address setting.
10. Use high voltage insulation wire between the fence and energizer, including the
earth wire. Never run these wires in the same conduit or through the same hole as
the low voltage wiring.
11. Always use ferrules or line clamps to connect two high voltage wires together.
Avoid using different types of material for connections like copper on steel.
12. The fence must be earthed properly with at least one earth electrode as close as
possible to the energizer. The distance between the fence earth electrode and other
earth systems shall be not less than 10 m.
13. When replacing the lid of the energizer hook the top in first while holding it an
angle and then push it closed at the bottom. Fasten the lid down with the two cap
screws.
14. Always test the fence alarm for a short and open-circuit after installation at the
furthest point on the fence.