Protec Digilite Installation guide

Brand: Protec

Model: Digilite

Type: Installation guide

Protec Fire Detection PLC, Protec House, Churchill Way, Nelson, Lancashire, BB9 6RT.

Telephone: +44 (0) 1282 717171

Fax: +44 (0) 1282 717273

Web: www.protec.co.uk

Email: sales@protec.co.uk

Digilite

Emergency Lighting

Control Panel

INSTALLATION MANUAL

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

Document Revision Details

Issue

Modification Detail

Author

Date

0 Document Creation NH 02/09

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

Table of Contents

1.0 IMPORTANT NOTES – PLEASE READ ........................................................................4

2.0 ITEMS SUPPLIED WITH THE DIGILITE® PANEL ........................................................4

3.0 INTRODUCTION .............................................................................................................4

4.0 CABLING REQUIREMENTS ..........................................................................................5

4.1 General .....................................................................................................................5

4.2 Mains Wiring .............................................................................................................5

4.3 Auxiliary Wiring .........................................................................................................5

4.4 Loop Wiring ..............................................................................................................5

5.0 INSULATION TESTING OF CABLING PRIOR TO CONNECTION ...............................8

6.0 INSTALLATION PROCEDURE ......................................................................................8

7.0 COMMISSIONING ........................................................................................................ 11

7.1 Connecting the Loop ............................................................................................. 11

7.2 Connecting the Mains ............................................................................................ 11

7.3 Installing and Connecting The Standby Batteries ................................................. 12

7.4 Switching On ......................................................................................................... 12

8.0 DIGILITE® TECHNICAL SPECIFICATION ................................................................. 13

9.0 APPENDIX 1 DIGILITE® SPARES LIST ..................................................................... 14

10.0 APPENDIX 2 DIGILITE® MAIN PCB DETAILS .......................................................... 15

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

1.0 Important Notes – PLEASE READ

• THE DIGILITE® PANEL AND ITS ASSOCIATED CONNECTIONS MUST BE INSTALLED,

COMMISSIONED AND MAINTAINED BY A SUITABLY SKILLED AND COMPETENT PERSON.

• THIS EQUIPMENT MUST BE EARTHED.

• THIS EQUIPMENT IS NOT GUARANTEED UNLESS INSTALLED AND COMMISSIONED IN

ACCORDANCE WITH CURRENT NATIONAL STANDARDS.

• THIS EQUIPMENT HAS BEEN DESIGNED AND MANUFACTURED TO CONFORM WITH

THE REQUIREMENTS OF ALL APPLICABLE EU COUNCIL DIRECTIVES.

• THIS MANUAL MUST BE THOROUGHLY READ AND UNDERSTOOD BEFORE

INSTALLATION AND COMMISSIONING OF THIS EQUIPMENT IS UNDERTAKEN.

• MAY CONTAIN TRANSMITTER MODULE FCC ID: ED9LMX9838.

• Digilite® IS A REGISTERED TRADEMARK OF PROTEC FIRE DETECTION PLC.

2.0 Items Supplied with the Digilite® panel

• Installation manual.

• Commissioning manual.

• User manual.

• Mounting template.

3.0 Introduction

The Digilite® control panel has been designed to automatically test emergency lighting fittings and

report any faults detected.

To facilitate testing the fittings may be programmed into groups (up to a maximum of 24). Each group

is tested on the corresponding day of each month, with the functional test being replaced by a full test

once every year.

Digilite® fittings generally incorporate an LED which readily displays the current status of the fitting.

Green is normal, Flashing green indicates the fitting is being tested, flashing amber indicates the unit

has a fault or has failed a test.

The panel logs all test results, which may be viewed or cleared at any time on the panel.

Test results, faults and panel status/configuration may be printed out by using the standard

Bluetooth® printer, or from a PC by specifying the optional TCP/IP network interface (assuming

relevant PC software has been set-up). The correct model of panel must be specified when ordering.

The TCP/IP interface may be used to network up to 32 panels, which may then be operated remotely

via a PC which instigates/aborts tests and logs panel events.

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

4.0 Cabling Requirements

4.1 General

All wiring associated with the system must conform to the current I.E.E Regulations and cabling must

conform to the relevant BS specifications. ECA recommended Cable Separation for Electromagnetic

Compatibility in Buildings must be followed.

4.2 Mains Wiring

The Digilite® panel requires a mains supply exclusive to the panel that uses fixed three core wiring

(between 0.75mm

and 2.5mm

) which is fed from a double pole isolating fused spur, fused at 3A.

Unauthorised operation of the mains supply should not be allowed and the fused spur should be

labelled “EMERGENCY LIGHTING PANEL: DO NOT SWITCH OFF”

4.3 Auxiliary Wiring

Any auxiliary wiring (keyswitch, global contacts etc) should be wired in screened cable, with the

screen securely connected to the earthing point supplied in the panel.

The TCP/IP interface (if fitted) has a socket which accepts standard RJ45 type network cabling

connectors. The CAT5 network cable (supplied by the sites relevant IT department) should be plugged

into here.

4.4 Loop Wiring

The Digilite® loop wiring carries both power and data to the Digilite® fittings. In order for the system to

operate correctly the voltage drop along the loop must be kept within certain limits.

The loop wiring must be wired from the panel terminal marked ‘LOOP1 A’ round all the fittings and

reconnected at the panel terminal marked ‘LOOP1 B’.

Spurs off the loop are permitted, assuming that they meet the required resistance criterion.

Table 4.0 shows the general characteristics required for the loop cabling.

Table 4.0

Recommended Cable Type Twin core twisted or twin core screened (screen connected to

earth)

Recommended Size 1.0mm

to 2.5mm

(Depends on loop volt drop calculations)

Maximum Resistance 40Ω per conductor (cold resistance)

Maximum Capacitance 2µF per km

Maximum Cable distance 2km (Depends on loop volt drop calculations)

The voltage drop on the loop is a function of both the resistance of the loop cabling (determined by the

gauge of cable and the length of the loop) and the current that the loop must carry (determined by the

number of loop devices connected).

Each Digilite® fitting draws an average current of 200µA, but the loop cable must be able to support

the peak loop current of 400µA for data signalling purposes. The voltage drop on the loop must be

limited to 8V in order for the data to be received by the fitting.

Knowing these parameters an equation to determine the maximum loop resistance can be developed.

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

In order to select the required gauge of cabling for a given installation, the maximum cold resistance of

the cable must be calculated. Table 4.1 gives guidelines for cable selection, showing cable AWG

versus resistance per km.

Please note that the resistance of the actual cable being used on a particular installation must be used

to determine if the cable is acceptable or not. This data will be available from the cable data sheets,

available from the cable manufacturer.

Table 4.1 – Cable DC resistance guidelines

AWG

DC resistance (Ω per km)

12 5.5

13 7

14 9

15 11

16 14

17 17

18 21

19 27

20 34

Equations have been developed which allow the system designer to calculate a value of cable

resistance for a given installation type.

The equations assume worst case conditions where all the fittings are lumped at one end of a broken

loop (effectively a spur).

Equation 1 – Calculating the maximum cable resistance of a spur.

Loop resistance

(max)

= ( 8 / (

x 0.0004 ) )

Ω

(Equation 1)

Where η is the number of Digilite® fittings on the cable.

Worked Example 1

The following example shows a situation where 280 fittings are required on a 1.5km loop.

η = 280.

Loop resistance

(max)

= ( 8 / ( 280 x 0.0004 ) ) = 71

Ω

This shows that the loop wiring must have a cold resistance of no more than 71Ω (or 35.5Ω per

conductor). So using table 3.1 20 AWG cable would be sufficient.

Digilite®

control panel

Number of fittings (

)

Loop broken

at one end

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

Equation 2 – Calculating the maximum cable resistance of a spur fed off a loop.

Where:

ηtotal is the total number of fittings on the total loop (loop and all spurs)

ηspur is the total number of fittings for a particular spur

Rloop is the go and return resistance of the main loop

Rspur is the go and return cold resistance of a particular spur

To calculate the maximum go and return cold resistance for a particular spur the following equation

may be used.

spur (max)

= 8 – ( R

loop

x η

total

x 0.0004 )

( η

spur

x 0.0004 )

Worked Example 2

The following example shows a situation where the main loop resistance is 25Ω and there are four

spurs fed off the loop, each with 70 fittings connected.

The maximum go and return cold resistance for a spur may be calculated as follows.

spur (max)

= 8 – ( 25 x 280 x 0.0004 )

( 70 x 0.0004 )

spur (max)

= 185 Ω

Worked Example 3

The following example shows a situation where the main loop resistance is 16Ω and there are four

spurs fed off the loop, two with 100 fittings connected and two with 70 fittings connected.

The maximum go and return cold resistance for a spur with 100 fittings may be calculated as follows.

spur (max)

= 8 – ( 16 x 340 x 0.0004 )

( 100 x 0.0004 )

spur (max)

= 145 Ω

Digilite®

control panel

Loop broken

at one end

ηspur

spur

Rloop (

Ω

)

Rspur (Ω)

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

5.0 Insulation Testing of Cabling Prior to Connection

Before connecting any external cables to any field device or the Digilite®, tests must be carried out

using a 500V DC insulation tester (‘Megger

TM’

). The readings between each cable core, and each core

and earth should be greater than 10MΩ.

Important Notes:

• Digilite® Fittings or the Digilite® panel must NOT be connected when high voltage insulation tests

are being performed on the cabling, the cabling must be completely discharged prior to

connection to any fittings or the Digilite® panel.

• Equipment connected to the cabling during insulation tests could be damaged with the high

voltages used during the test, invalidating any warranty.

6.0 Installation Procedure

The Digilite® panel circuit boards are housed in a plastic enclosure. When the front is removed from

the panel the main circuit board and the batteries are fully accessible. The panel can still be controlled

even though the front has been removed.

The panel may be surface or flush mounted (no extra bezel required).

The panel must be located internally in an area that is not subject to dampness, extremes of

temperature or physical abuse. The environmental limits are given in section 8.0

1) Unpacking

After opening the box remove the installation template from the packaging, leaving the

Digilite® panel in the cardboard box for protection.

2) Preparing the Mounting Position

Use the installation template in conjunction with a spirit level to mark out the fixing locations

for the panel. Drill and plug the mounting holes previously marked.

3) Removal of the Door

Remove the Digilite® panel from the packaging. Remove the two screw covers from the lower

two corners of the front door and unscrew the two front door fixing screws.

Swing the door upward from the bottom and lift away, see figure 6.0.

Put all removed parts in a safe, dry place.

Figure 6.0 – Removing the door from a Digilite® panel

N93-561-85 Issue 0 © Copyright Protec Fire Detection plc 2009

4) Removal of the Main PCB.

NOTES ON ANTI-STATIC HANDLING OF THE PCBs

Before handling any of the circuit boards in the Digilite® it is vital that any operatives

discharge themselves of any static charge that may have built up on them. This can be

done by momentarily touching a solid earth point (a non-painted part of a radiator, for

example).

Handle the PCBs by their sides and DO NOT touch the electronic components on them.

The PCB should be stored in a clean, dry place away from the place of work. Retain the

PCBs in a cardboard box for safety until they are required.

Disconnect the 3 way connector from the main PCB, taking care not to strain the connector or

the PCB. Leave the connector attached to the Power Supply PCB.

Unscrew and remove the two mounting screws on the main PCB. Carefully slide the Main

PCB upward (stage 1) and lift away from the plastic enclosure (stage 2). See figure 6.1. If the

optional TCP/IP or Bluetooth® printer PCB is fitted in the centre channel of the enclosure,

carefully disconnect the wire connected to the rear of the main board

Store all screws and PCBs in a safe, dry place.

Figure 6.1 – Removal of the Digilite® Main PCB.

PCB fixing screw

Stage 1

Stage 2

3 way power

connector

PCB fixing screw

5) Preparing and Fixing the Panel Back-box

The mains cable entry position must be kept away from other system cabling.

Using a screwdriver carefully remove the knock-outs at the required cable entry positions and

mount the enclosure at the position prepared in (2) whilst feeding the cables into the

enclosure.

6) Refitting the Main PCB

Note: Before re-fitting the main PCB the connections to the Power Supply PCB (see

section 7) and TCP/IP interface (if fitted) should be connected.

DO NOT SWITCH MAINS POWER ON AT THIS POINT !

Route the battery cables through to the battery compartment using the channels provided.

If fitted reconnect the wire from the rear of the Digilite® main board to the interface fitted in the

centre channel of the enclosure.

Replace the Main PCB (a reversal of removal), ensuring it is pushed fully down to the bottom

edge of the panel. Secure with the two screws removed previously. Take care not to over

tighten the screws.

Re-connect the three way cable from the Power Supply to the Main PCB, do not use undue

pressure and ensure the cable is clipped into the locking ramp on the PCB header securely.

7) Re-fitting the Door

Replace the plastic door by offering the top of the door up to the groove at the top of the

plastic back-box.

Swing the door down and ensure it pushes fully home into the back-box, without fouling the

rubber keypad or light-guides on the main PCB. See figure 6.3 for details.

Tighten the two screws in the lower two corners of the door, and replace the screw covers.

Figure 6.3 – Refitting the Digilite® door.

7.0 Commissioning

7.1 Connecting the Loop

The Digilite loop wiring must always be connected as a complete loop from the panel to each

outstation, then back to the panel again. Please see figure 7.0

The loop wiring carries both power and bi-directional signalling to the Digilite outstations.

Figure 7.0 Loop Connection Details

7.2 Connecting the Mains

Important Note:

Pay particular attention that the earth cable is firmly connected to the earth terminal of the

power supply, and that the earth strap from the power supply PCB to the earth post is sound.

Ensure the fused double pole isolator is in the ‘OFF’ position then connect the incoming mains cable

to the appropriate terminals on the power supply PCB (see figure 7.1).

Figure 7.1 Power Supply Terminal Details

Outgoing loop connections

Return loop connections

7.3 Installing and Connecting The Standby Batteries

The panel is designed to house two 12V 3.3Ah Valve Regulated Sealed Lead Acid (SLA) batteries.

These fit into the left hand compartment of the Digilite® and should be secured with the Tie-wraps

provided.

The two batteries must be connected in series, a connecting link is supplied for this purpose.

The batteries must then be connected to the power supply PCB using the wires provided, please

observe polarity when connecting.

Ensure all spade connectors are pushed fully home onto the battery terminals.

Figure 7.2 shows the location and connection details for the batteries.

Figure 7.2 Installation of Digilite® Standby batteries (shown with the lid removed)

7.4 Switching On

Switch the fused isolator to the ‘ON’ position. The ‘Supply Present’ indicator should illuminate on the

front of the panel and, assuming all other connections are correct the Digilite® should be displaying

the ‘System Healthy’ screen on the LCD.

The Digilite® is now ready to be commissioned and programmed.

8.0 Digilite® Technical Specification

Power Supply Mains 230V AC. Nominal (+/-10%)

Integral Charger 1A switch mode, temperature compensated, 250mA battery charge current.

Batteries monitored for disconnection, failure and deep discharge

Auxiliary 24V output 24V DC, 100mA max, monitored for fuse failure. (fuse self resetting)

Maximum Battery Size 2 x 12V 3.3Ah

Mains Fuse 1A HRC ceramic 20mm

Battery Fuse 1.6A F 20mm

Working Voltage 20V to 30V DC

Current Consumption 15mA (24V DC. Supply, not in alarm, mains failed, buzzer slow beeping,

General and PSU fault light illuminated) + loop load

Temperature Range 0 to 40 degrees C

Humidity Limit 85% Non-Condensing

Environment Meets IP30 if mounted in a dry position that does not exceed the temperature

and humidity limits given

Mounting 3 or 4 points surface mount

9.0 Appendix 1 Digilite® Spares List

Description Protec Stock Code

1.6A F battery fuse NK15-055-40

1A HRC mains fuse NK15-131-35

Red battery lead N41-791-64

Black battery lead N41-790-63

Battery inter-connection lead N41-796-44

Full spares kit N62-589-78

User Manual N93-560-84

Installation manual N93-561-85

10.0 Appendix 2 Digilite® Main PCB Details

The diagram below shows the Digilite® control PCB and highlights the main connections and controls.

Connection to loop devices

Global fault contacts

Auxiliary 24V output

Keypad

USB PC connection

Connection to 24V

Power Supply Unit

LED showing current

group(s) in test

Protec Digilite Installation guide

Protec Digilite Installation guide

Protec Digilite Installation guide

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