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Page 9 of 17    Revision 1.1    Aug 2020

Document No. AlarmLine II Digital EN Controller Installation Instructions 

Leader Cable

In certain applications it may be desirable or necessary to use non-
sensing leader cable between the AlarmLine II Digital EN Controller 
and the Digital LHD cable. For example, if the the AlarmLine II Digital 
EN Controller is located some distance away from the area protected 
by the Digital LHD cable. This may be required if the expected ambient 
temperature range, or other environmental conditions, where the 
Digital LHD cable is to be used is greater than the maximum ambient 
temperature range for the AlarmLine II Digital EN Controller. (

see steps 8, 

9 and 10 in the Commissioning section on pages 10-11

).

The maximum length of leader cable that can be used per zone is 
dependent upon the leader cable diameter’. The following is a guideline 
for typical cable sizes and maximum length:

Leader Cable Size 

Max Leader Cable Length

20AWG 
(16x0.2mm or 0.8mm dia, copper) 

1000m

Mounting Dimensions

The AlarmLine II Digital EN Controller is intended to be wall-mounted. 
4 holes should be drilled according to the mounting dimensions given in 
fi gure 2.  The corresponding mounting holes on the AlarmLine II Digital 
EN Controller can be found by removing the lid of the device. The 
mounting holes are located adjacent to the lid screw positions. Suitable 
screws for the type of wall the AlarmLine II Digital EN Controller is to be 
mounted on will need to be provided for separately. The maximum screw 
head diameter is 7mm and the maximum screw thread diameter is 4mm.

Static Discharge Cautionary

The following items are cautionary notes that will help prevent 
equipment damage or malfunction caused by static discharge:

CAUTION

Static charges produce voltages high enough to damage electronic 
components. Follow these precautions when installing, servicing, or 
operating the AlarmLine II Digital EN Controller:

•  

Work in a static-free area.

•  

Discharge any static electricity you may have accumulated.

•  

Discharge static electricity by touching a known, securely 
grounded object.

•  

Do not handle the printed circuit board (PCB) without proper 
protection against static discharge.

In the event that the AlarmLine II Digital EN Controller malfunctions after 
encountering a static discharge correct operation of the unit can be 
restored by interrupting power to unit for a brief period (approximately 
10 seconds). Setup information can be verifi ed by following the steps in 
the Commissioning section (

page 10 onwards

). In the event of the setup 

information being corrupted the unit should be reset following the 

Resetting the AlarmLine II Digital EN Controller procedure

.

Figure 2: Mounting Dimensions for the Kidde AlarmLine II Digital 

EN Controller

Useful Information

Summary of Contents for Alarmline II Digital EN

Page 1: ...2020 DocumentNo AlarmLineIIDigitalENControllerInstallationInstructions Page 1 of 17 Revision 1 1 Aug 2020 DocumentNo AlarmLineIIDigitalENControllerInstallationInstructions AlarmlineIIDigitalENControl...

Page 2: ...tallation Page 6 Overview Connections Diagram Operating Modes Page 7 Wiring Diagram Independent Wiring Diagram Interlock Useful Information Page 9 Leader Cable Mounting Dimensions Static Discharge Cau...

Page 3: ...d sufficient training on the unit Only use Kidde AlarmLine II Digital EN Linear Heat Detection cable with the AlarmLine II Digital EN Controller Test the Digital Linear Heat Detection cable before con...

Page 4: ...The two zones can operate independently of each other or in interlock mode and a separate alarm and normally conducting fault output are provided for each zone The unit is intended to be installed bet...

Page 5: ...c 36Vdc Current Consumption Normal Operation standby 15mA 7mA 5mA Alarm 40mA 23mA 15mA Operating Temperature Range 20 C 50 C 4 F 122 F Terminal Blocks Spacing 5mm Rising Clamp Rating 16A Wire Size 0 0...

Page 6: ...The fault outputs also stop conducting on power loss to the unit or microprocessor fault triggering a fault at the fire alarm control panel The two wire RS 485 Modbus RTU ASCII output also outputs th...

Page 7: ...erature Digital LHD cables Zone 1 250m Zone 2 120m Power supply 250m 120m NC NO C NC NO C Zone Switch IO Module Zone Switch IO Module Addressable loop Addressable loop RS 485 Modbus RTU A A EOL EOL Ju...

Page 8: ...tion cables must be installed in each protected space See the AlarmLine II Digital EN LHD Installation Instructions for the linear spacing specification Zone 1 250m Zone 2 250m Power supply 250m NC NO...

Page 9: ...vice The mounting holes are located adjacent to the lid screw positions Suitable screws for the type of wall the AlarmLine II Digital EN Controller is to be mounted on will need to be provided for sep...

Page 10: ...s activate only when both Digital LHD zones trigger an alarm 6 Select the relevant operating programme for Zone 1 based on the table below 7 Select the relevant operating programme for Zone 2 based on...

Page 11: ...start of the LHD cable 11 If the Linear Heat Detection cable is connected directly to the AlarmLine II Digital EN Controller then select No and press the Set button to continue 12 Select whether you...

Page 12: ...whenAlarmLineIIDigitalENControllerisinnormaloperation Independentmode Interlockmode NormalOperation 20 Once the unit has been commissioned the display will show the zone status In normal operation th...

Page 13: ...is in fault 24 The unit monitors for interference faults when the input may be changing between alarm ok and fault conditions for example too rapidly In this case an I F fault is displayed on the corr...

Page 14: ...show ok The alarm relays will be o and the fault output normally conducting on 3 In self test mode and alarm condition the display will show alarm The alarm relays will be on After approx 8 seconds th...

Page 15: ...ll respond in the following manner Number of bytes of register values to be read 8 bit Register values 16 bits per register The AlarmLine II Digital EN Controller stores the information for each zone...

Page 16: ...10 seconds continuously While the SET and SELECT buttons are held down the power LED will flash quickly to confirm this procedure is about to take place After approximately 10 seconds the unit will r...

Page 17: ...al state regardless of the state of the other zone Interlock mode The mode on the AlarmLine II Digital EN Controller where the alarm relay outputs will only activate when both Digital LHD cables go in...

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