Nemtek MERLIN II M Series, M25, M28 - Electric Fence Energiser Manual

Table of Contents

Contents

1 What is your device
2 How does your device work
3 Does your unit need maintenance
4 What the lights mean
5 What do you do after alarm activation
6 What can activate the alarm
7 What will happen if you don't reset the alarm
8 How do you know your device is working
9 Specifications
10 Documents / Resources
- 10.1 Download manual

What is your device

An electric fence system consists of electric wires carrying high voltage electric pulses that provide a non-lethal repulse shock to an intruder. The system monitors for any tampering on the fence.

How does your device work

The energiser generates high voltage pulses from a built-in battery source. These pulses get fed via high voltage cables to the fence. The energiser also monitors for a loss of voltage on the fence that will cause an alarm to be activated

Does your unit need maintenance

Keep any vegetation away from the fence and make sure the mains supply to the system is not interrupted.

What the lights mean

	Power Light	On Light	Gate Light	Service Light	Good Light	Check Light	Alarm Light	Remarks
Fence Good	ON	ON	OFF	OFF	SLOW FLASH	OFF	OFF	Fence on, working properly
Mains Failure	OFF							System on battery power
Battery Low	SLOW FLASH							Check mains supply
Battery Flat	SLOW FLASH	SLOW FLASH		FAST FLASH				Check mains, call for service
Fence Off		OFF						Fence switched off
Fence Check		ON			SLOW FLASH	SLOW FLASH	OFF	Check fence for vegetation
Fence Check		ON				SLOW FLASH	OFF	Check fence for vegetation
Fence Alarm		ON					FAST FLASH	Problem on fence
Service Alarm				FAST FLASH				Call for service
Gate Open			FAST FLASH					Gate is open
Alarm Memory			ON	ON			ON	Old alarm condition

What do you do after alarm activation

Determine the type of alarm from the table above and reset the alarm by switching the energiser off with the key-switch mounted on the side of the unit. Investigate the cause of the alarm and correct it. The alarm will not activate again unless the fault is cleared and the unit is switched on.

What can activate the alarm

Fault on the fence that persists for more than 3 seconds.
A service fault caused by a faulty energiser, siren, strobe light, keypad or a low battery.
The gate left open for more than 4 minutes, this time delay can be changed via the keypad.

What will happen if you don't reset the alarm

The strobe light and buzzer will be on till you reset the unit. The alarm will sound for 4 minutes and then switch off for 5 minutes. This on-off cycle will repeat four times, after that the alarm will not sound again until you cleared the fault and reset the unit. The alarm onoff and cycle times can be changed with the use of a keypad.

How do you know your device is working

You can determine the condition of the electric fence by looking at the indicator lights on the energiser unit or keypad. Under normal operating conditions the unit must indicate a Fence Good condition as shown in the table. It is advisable to test the electric fence system from time to time by putting a short on the fence.

Specifications

Merlin	M-28	M-25
Gate inputs:	Two potential free contact inputs with built-in delay.
Siren output:	One 12 Volts DC relay switched, fuse protected output.
Strobe light outputs:	Two 12 Volts DC relay switched, fuse protected outputs.
Strobe and Siren current:	1.75 Amps in total maximum.
Keypads:	Up to 4 Merlin Keypads or Merlin Fence Monitors
Standby battery:	One 7AH 12Volts Lead-acid battery
Charging Voltage:	16 Volts AC or 18 Volts DC
Standby time:	7-8 Hours	9-10 Hours
Power Consumption:	14 W (Norm), 30 W (Max)	10 W (Norm), 30 W (Max)
Output Energy @ 500Ω:	8 Joules (Max)	5 Joules (Max)
Output Voltage @ 500Ω:	5800 Volts
Output Voltage No Load:	7800 Volts
Weight Including Battery:	9.5kg
Dimensions:	350mm x 235mm x 125mm