Accord XPC User manual

i
Installation
Manual

ii

iii
Table of Contents
Section 1: Wiring Regulations and Safety Compliance ................................ 1
General Information .................................................................................................................. 1
Compliance ................................................................................................................................. 1
Siting ........................................................................................................................................... 1
Ventilation .................................................................................................................................... 1
Cabling ........................................................................................................................................ 1
Mains Supply Connections ...................................................................................................... 2
Mains Cable Type........................................................................................................................ 3
Telecoms Approvals.................................................................................................................. 3
Connection to the PSTN .............................................................................................................. 3
Approvals .................................................................................................................................... 3
Public Switched Telephone Network (PSTN) Approval ................................................................ 4
Private Branch Exchange (PBX) Approval .................................................................................. 4
REN and SEN Numbers .............................................................................................................. 4
Zone Cable Type ........................................................................................................................ 4
Equipment Electrical Rating .....................................................................................................5
Fuses .......................................................................................................................................... 5
Batteries ...................................................................................................................................... 5
Section 2: Installing the Accord xpC .............................................................. 7
Ancillaries Pack ......................................................................................................................... 7
Initial Mounting.......................................................................................................................... 7
Removing and Replacing the Accord xpC PCB ........................................................................... 8
Fitting the Tamper Switch ............................................................................................................ 9
Connecting Keypads, Sounders and a Speaker to the Accord xpC ................................... 10
Mounting and Wiring the LED Remote Keypad ......................................................................... 10
Mounting and Wiring the Icon Remote Keypad ......................................................................... 10
Connecting the External Sounders........................................................................................ 11
Wiring the Loudspeaker ............................................................................................................ 11
Wiring the Zones ....................................................................................................................... 11
Zone Links ................................................................................................................................. 11
Connecting Power to the System .......................................................................................... 12
Mains Power ............................................................................................................................. 12
Stand-by Battery ........................................................................................................................ 12
Connecting the Accord xpC to the PSTN .............................................................................. 12
Connecting Additional Telecom Apparatus ................................................................................ 13
REN and SEN Numbers ........................................................................................................... 13
Private Branch Exchange (PBX) Connection ............................................................................ 14
Final Mounting......................................................................................................................... 14
Securing and Removing the Enclosure Lid ................................................................................ 14
Testing the Installation ........................................................................................................... 15

iv
Power-up and Initial Test Procedure .......................................................................................... 15
Section 3: Programming the Accord xpC .................................................... 17
An Introduction to Programming the Accord xpC ................................................................ 17
Defaulting Codes ....................................................................................................................... 17
The Programming Format ......................................................................................................... 17
Programming Fields .................................................................................................................. 18
Viewing Field Programming .......................................................................................................18
Programming Groups 1, 2 and 3 (Zone Programming For Full, Part and Night Set) ......... 18
Zone Programming  Group 1 Full Set .................................................................................... 19
Zone Programming  Group 2 Part Set ................................................................................... 19
Zone Programming  Group 3 Night Set.................................................................................. 20
System Programming  Group 4 System Options ................................................................... 20
Group 4  Option 1 Exit Time .................................................................................................. 21
Group 4  Option 2 Entry Time ................................................................................................ 21
Group 4  Option 3 Bell Cut-off Time ....................................................................................... 21
Group 4  Option 4 Part Set Exit Warning ............................................................................... 21
Group 4  Option 5 External Bells and Strobe in Part Set ....................................................... 22
Group 4  Option 6 External Bells and Strobe in Night Set ...................................................... 22
Group 4  Option 8 Easy Set ................................................................................................... 23
Group 4  Option 9 Prevent Setting for Power Fails ................................................................ 23
System Programming  Group 5 System Options .............................................................. 23
Group 5  Option 1 Audible Warning of AC Loss ..................................................................... 24
Group 5  Option 2 Supplementary Entry ................................................................................ 24
Group 5  Option 3 System Reset for Alarm ............................................................................ 24
Group 5  Option 4 Hotkey Enable .......................................................................................... 24
Group 5  Option 5 Auto Omit Keypad .................................................................................... 25
Group 5  Option 6 Bell Output ................................................................................................ 25
Group 5  Option 7 Alarm Trigger Output ................................................................................ 25
Group 5  Option 8 System Reset for Day Tampers ................................................................ 25
Group 5 - Option 9 Zone Configuration ..................................................................................... 26
System Programming - Group 6 Comms Options1 .............................................................. 27
Group 6  Option 1 Primary Telephone No. ............................................................................. 27
Group 6  Option 2 Secondary Telephone No. ........................................................................ 27
Group 6  Option 3 Account Number ....................................................................................... 27
Group 6  Option 4 User Duress ............................................................................................. 27
Group 6  Option 5 Downloader Telephone Number. .............................................................. 28
Group 6  Option 6 Downloader I.D. Number............................................................................ 28
Group 6  Option 7 Ring Count ............................................................................................... 28
Group 6  Option 8 Communicator Format .............................................................................. 29
Group 6  Option 9 Central Station (ARC) Receiver Handshake ............................................. 30
System Programming  Group 7 Comms Options 2 .......................................................... 30
Group 7  Option 2 Dial Type .................................................................................................. 31
Group 7  Option 3 Prevent Full Set if Line Fail ....................................................................... 31
Group 7  Option 4 Bell Delay ................................................................................................. 31

v
Group 7  Option 5 Push-to-Set .............................................................................................. 32
Group 7  Option 6 When to Communicate ............................................................................. 32
Group 7  Option 8 Downloader Options ................................................................................. 33
Group 7  Option 9 Zone Auto Omit ........................................................................................ 33
System Programming  Group 8 Communication Enable / Disable ................................... 33
Group 8  Option 1 Communicate Fire .................................................................................... 34
Group 8  Option 2 Communicate PA Signals (PA and PA Silent) ........................................... 34
Group 8  Option 3 Communicate Intruder .............................................................................. 34
Group 8  Option 4 Communicate Set/Unset ........................................................................... 34
Group 8  Option 5 Communicate Tamper .............................................................................. 34
Group 8  Option 6 Communicate Abort .................................................................................. 34
Group 8  Option 7 Communicate Verified Alarm .................................................................... 35
Group 8  Option 8 Communicate Battery Low and AC Mains Failure .................................... 35
Group 8  Option 9 Communicate Periodic Test Report .......................................................... 35
System Programming  Group 9 Parameters ...................................................................... 35
Group 9  Option 1 Communicate Omitted Zones ................................................................... 36
Group 9  Option 2 Invert Set/Unset Signals ........................................................................... 36
Group 9  Option 3 Double Knock Zone .................................................................................. 36
Group 9  Option 5 Restore Signals on Unset or Reset .......................................................... 37
Group 9  Option 6 Entry Deviation Permitted ......................................................................... 37
Group 9  Option 7 Print Event Log ......................................................................................... 37
Group 9  Option 8 Factory Defaults ....................................................................................... 37
Group 9  Option 9 Show Software Version ............................................................................ 38
Group 0 Communications ...................................................................................................... 38
Group 0  Option 1 Technistore Version .................................................................................. 38
Group 0  Option 2 Verified Alarm Time Window ..................................................................... 38
Group 0  Option 3 Assistance Channel .................................................................................. 39
Zone Type Definitions ............................................................................................................. 40
General Information................................................................................................................... 40
0  Not Used ............................................................................................................................ 40
1  Final Exit ............................................................................................................................ 40
2  Keyswitch........................................................................................................................... 40
3  Intruder .............................................................................................................................. 40
4  Walk Through .................................................................................................................... 40
5  24 Hour Tamper ................................................................................................................. 41
6  PA Silent ............................................................................................................................ 41
7  PA Audible ......................................................................................................................... 41
8  Push-to-Set ........................................................................................................................ 42
9  Fire .................................................................................................................................... 42
Section 4: Operating The Accord ................................................................. 43
Setting and Unsetting the System ......................................................................................... 43
Full Set 1 ( ) ............................................................................................................................ 43
Part Set 2 ( ) ............................................................................................................................ 43
Night Set 3 ( ) ......................................................................................................................... 44
Unsetting [4] .............................................................................................................................. 44

vi
Engineer Setting and Unsetting ................................................................................................. 44
Testing the System 5 ( ) .......................................................................................................... 44
Omit Zone 6 ( ) ................................................................................................................... 45
Changing Codes 8 ( ) ........................................................................................................... 45
Enabling/Disabling the Chime Function 9 ( ) ........................................................................ 46
Viewing the Event Log from a System Keypad 0 ....................................................................... 47
Programming the Time and Date .............................................................................................. 47
Hot Keys .................................................................................................................................... 48
Section 5: Systems Indications and What they Mean ................................. 49
Section 6: Handing the System Over to the User ........................................ 51
Fill In the User Instructions! ................................................................................................... 51
Appendix A: Specifications ................................................................................................... 51
Panel Specification .................................................................................................................... 51
Remote Keypad Specification ................................................................................................... 52
Appendix B: Connecting a Printer to the System ................................................................ 52
Installing a Printer ...................................................................................................................... 52
Appendix C : Bell-Box Connections ...................................................................................... 53
ADEMCO MICROTECH LIMITED WARRANTY .................................................................... 54

1
IE1-1230-B February 2001
Section 1: Wiring Regulations and
Safety Compliance
General Information
It is essential that this product is installed correctly, in particular with respect to a persons
safety and connection to the mains electricity supply. This product is not suitable for
installation, maintenance or connection by the user. A competent, qualified installer, with
for example BS5750 or NACOSS approval, must carry out installation and maintenance.
Compliance
The Accord xpC is compatible with the relevant parts of the following standards:
 BS 4737
 EN 60950
 CTR 21
 CE Standards (EN 50130-4)
 EN 41003
It is a condition of the products approval that the installation complies with the following:
Siting
The control panel enclosure must be sited indoors in a secure area where it cannot be
readily interfered with. There must be adequate ventilation, ample light and easy access
for servicing and maintenance. It is not suitable for siting externally or in harsh
environments where it could be subject to high humidity, extremes of temperature, chemical
atmospheres, high dust levels, or in a position where it may be subject to being dripped
on, or splashed by, water or other fluids.
The enclosure base must be securely fixed to a vertical, smooth, solid surface that is a
part of the fabric of the building. The position chosen must allow the cabinet door to be
removed and allow unhindered access for installation and maintenance.
Ventilation
While the control panel has been designed so that no part attains an unsafe temperature it
is important that adequate ventilation is provided around the cabinet, therefore the cabinet
should not be positioned close to heat-radiating equipment or other sources of heat.
Cabling
The panel has high voltage barriers between the a.c. mains supply and the alarm wiring
terminals. It is essential that these barriers are maintained in the way the cables enter the

2
cabinet, are routed inside the cabinet, and are routed externally.
Additional holes must not be cut in the enclosure, rear entry points are provided for
cables. Alarm system cables must be neatly trimmed and not allowed to loop inside the
cabinet .
Cables external to the cabinet must be either firmly affixed to the fabric of the building
using suitable clips or saddles, or mechanically protected in conduit or trunking. It must
not be possible to put strain on the wiring within the control cabinet by pulling on cabling
external to the cabinet.
It must not be possible to push a finger or similar size object or instrument into any hole
or cable entry point.
Mains Supply Connections
The connection to the a.c. mains supply must be made by a competent, qualified person,
for example NICEIC approved, in accordance with the current IEE and local supply
regulations.
Warning: A means of isolation from the mains supply must be provided within
two metres of the control panel. Where live and neutral supplies can
be identified, a fused spur with a 3A fuse, must be fitted on the live
circuit. Where live and neutral circuits cannot be reliably identified,
3A fuses must be fitted to both circuits.
Where a flexible cable is connected to the control having cores coloured brown and blue
it is important to connect the wires to the mains terminal block as follows:
 Blue (Neutral) connect to terminal N
 Brown (Live) connect to terminal L
Where a non-flexible cable is connected to the control having cores coloured red with
black sleeves, it is important to connect the wires according to the following code:
 Black (Neutral) connect to terminal N
 Red (Live) connect to terminal L
Note: No connections should be made to the Earth terminal (marked E) or on the
mains terminal block.
The insulation of each conductor must be prepared and connected such that no part of the
bare conductor is visible or protruding outside the terminal block. In the case of standard
conductors, all the strands must be twisted together and firmly clamped in the mains
terminal block.
The outer covering insulation must be clamped under the cable clamp. It is important that
this cable enters the control panel enclosure through the mains entry hole under the mains
terminal block, is not looped within the control panel enclosure and does not run close to
other system cables inside or external to the enclosure.
The control panel enclosure must not be opened before isolating the mains supply. The
cover must be securely fitted in normal use.

3
IE1-1230-B February 2001
Mains Cable Type
The conductors of the mains supply cable must have a minimum cross-sectional area of
0.75 mm and the insulating material on each conductor must be a minimum of 0.4 mm
thick Polyvinyl Chloride (pvc). Flexible cables must conform to the requirements of
BS6500 and IEC Publication 227. Non-flexible electrical installation cables must conform
to BS6004.
Telecoms Approvals
Connection to the PSTN
The Telecommunications Network Voltage (TNV) port (terminals A and B on TB5) must
be permanently connected (hard-wired) to the PSTN via a BT master socket. If the BT
master socket is a newer type (NTE5/CTE5), the connection can be carried out by the
installation engineer. If the BT master socket is not an NTE5/CTE5, then the connection
must be made by the network operator. The Accord control panel should be connected to
the BT master socket using cable suitable for connection to 2.8 mm diameter screw
terminals.
Note: Prevent exposure to potentially lethal voltages from the PSTN by replacing the
Control Panel cover when connection to the BT master socket is complete.
Inter-connection circuit equipment should comply with the requirements of 4.2 of
EN41003 for TNV (Telephone Network Voltage) circuits and 2.3 of EN60950 of SELV
(Safety Extra Low Voltage) circuits. Compliance must continue after making connections
between circuits.
Approvals
The Accord xpC is approved for connection to direct lines of the PSTN and PBX exchanges
(with or without secondary proceed indication).
It should be noted that the Accord xpC is not suitable as an extension to a payphone.
The Accord xpC has been approved for the use of the following facilities:
 Auto-dialling.
 Auto-answering.
 Auto-clearing.
 Modem communications.
 Series connection.
 Operation with Call Process Monitor (CPM) tone recognition.
 Multiple repeat attempts.
Any other usage invalidates the approval of the Accord xpC if, as a result, it then ceases
to comply with standards against which approval was granted.
Approval of the Accord xpC is also invalidated if it is used with internal software or

4
subjected to any hardware modification not authorised by BABT.
Public Switched Telephone Network (PSTN) Approval
The equipment has been approved to {Council Decision 98/482/EC} for Pan -European
single terminal connection to the Public Switched Telephone Network (PSTN). However
due to differences between the individual PSTNs provided in different countries the
approval does not, of itself, give an unconditional assurance of successful operation on
every PSTN network termination point.
In the event of problems contact the equipment supplier in the first instance.
The Accord xpC is designed to interwork with the following networks:
Austria France Italy Norway Switzerland
Belgium Greece Liechtenstein Portugal United Kingdom
Denmark Iceland Luxembourg Spain * Germany
Finland Ireland The Netherlands Sweden
Note: Contact the equipment supplier before using the Accord xpC on any network
not listed.
Private Branch Exchange (PBX) Approval
The Accord xpC is only approved for use with BABT approved pbxs. The correct operation
of the Accord xpC can not be guaranteed under all possible conditions of connection to
compatible pbxs.
REN and SEN Numbers
 The REN of the Accord xpC is one (1).
 The SEN of the Accord xpC is 0.3.
 Nominal series resistance is 90 milli-ohms.
 Nominal insertion loss is 0.1 dB.
Note: Difficulties may be experienced when making calls from other apparatus if the
total sen value approaches one or the total series resistance 50 ohms.
Zone Cable Type
Zone and detector cable should be standard alarm cable.
* May have interworking difficulties.

5
IE1-1230-B February 2001
Equipment Electrical Rating
The control equipment is designed to operate on a UK mains supply of 230 Volts a.c.
(230 V ±10%) at a frequency of 50 Hz. It is not suitable for other types of supply. The
maximum current consumption in normal use is 80 mA.
Fuses
The mains fuse within the cabinet is rated at 200 mA.
Example: The mains supply must be disconnected before opening the cabinet and
changing the fuse. Replace the mains fuse with the same type and rating,
that is:
 Rating: 200 mA anti-surge (T).
 Construction: Glass cartridge.
 Dimensions: 20 mm length, 5 mm diameter.
 Conformance: BS EN 60127-2 and IEC127-2.
There are three on board fuses:
 F1 Battery: 1 A, 20 mm, Anti-surge.
 F2 Speaker/Bell: 500 mA, 20 mm, Anti-surge.
 F3 Keypad/Aux power: 500 mA, 20 mm, Anti-surge.
Batteries
The battery used with the control panel must be a 12 V sealed lead-acid rechargeable
battery of up to 7.2 Amp-hour capacity. The battery must be positioned on the battery
shelf. The battery leads must be connected to the battery observing terminal polarity and
not left hanging near the mains terminal block.

6

7
IE1-1230-B February 2001
Section 2: Installing the Accord XPC
Ancillaries Pack
The Accord xpC control panel comes with an ancillaries pack. It contains ten zone links,
a cable clamp (with two self tapping screws), two M4×20 mm lid screws, battery connector
leads and 16 1K resistors.
Initial Mounting
Use the keyhole slot in the enclosure base to position the control panel enclosure. Three
mounting screws (not provided) are required to mount the enclosure base. Fix one of the
screws into the mounting surface, this will be used for the top, keyhole mounting hole.
Hang the enclosure base onto the mounting screw ensuring that the screw sits in the
narrow portion of the keyhole.
All cables should be brought into the enclosure base via the cable entry points shown in
figure 2.1. There are six cable entry holes for the entry of alarm cables. There is one a.c.
mains cable entry point located below the mains terminal block.
Figure 2.1 Accord XPC Enclosure Layout
Note: Leave about 60 mm above the control panel enclosure to enable the enclosure
lid to move on its hinges for removal and replacement.
Keyhole
Mounting
Slot
PCB Clip PCB Clip
PCB
Lid Hinge
Recess
Cable Entry
Points
Transformer
Output
Transformer Output
Lead to PCB
Terminal Marked AC
Mains Terminal Block
with 200mA fuse.
See Connecting
Power to the System
Secure Mains
Cable After Feeding
Through Entry Point
User Instruction
retaining Clip
Lid Screw
Terminal Lid Screw
Terminal
Mounting
Hole Mounting
Hole
Lid Hinge
Recess
Knockout Tamper
Posts

8
Removing and Replacing the Accord XPC PCB
If necessary the Accord PCB can be removed from the mountings to aid with enclosure
mounting and cable wiring.
Note: The control panel enclosure must not be opened before isolating the mains
supply. Illumination of the green power LED indicates the presence of a.c.
mains supply.
To remove the PCB:
1. Gently pull back the PCB mounting clips to free the Accord PCB.
2. Lift the PCB free of the PCB mounting slots.
To replace the PCB:
1. Insert the PCB into the PCB mounting slots.
2. Ensure that any cabling is clear of the PCB support pillars.
3. Gently pull back the PCB mounting clips and place the PCB on top of the
PCB support pillars.
4. Release the PCB mounting clips ensuring that they spring back into place
and that the PCB is held firmly in place.
For information on the layout of the enclosure base, see figure 2.1.
Figure 2.2 Accord xpC pcb
1 Amp
0.5 Amp
0.5 Amp
AUX KPAD TRIG LS
15
AC
AC
BATTERY
–+
14
A B PHONE
EE Volume
+
VADJ
SW 1
BELL
STRB
BTMP ZONE
TAMP 1
ZONE 2
ZONE 7
ZONE
6
ZONE
5
ZONE
4
ZONE
3
ZONE 8
ZONE
BELL AUX BATT
T1
RL1
S1
X1
IC12
15
LED
+
__
_
R
SW1  Accord Tamper
Switch SW1 on the Accord control panel PCB is the control panel tamper. Removing the
enclosure lid releases the tamper switch; this causes a tamper alarm if the system is not in
programming mode.
Note: The installer must attach the Tamper Post and spring supplied with the
ancilleries pack in order for the tamepr to operate.

9
IE1-1230-B February 2001
Fitting the Tamper Switch
The Accord xpC enclosure is supplied without a Tamper Actuator in place. The panel
will not function without a Tamper, it is therefore, the installers responsibility to correctly
attach the Tamper Actuator. The Tamper Actuator consists of a spring, which is supplied
in the Accord xpC Installation Kit, and one of the Knockout Tamper Posts, see figure
2.1. The installer should knockout one of these Tamper Posts from the enclosure base and
ensure the spring is securely attached to the short end of the Tamper Post, before fitting
the opposite end of the spring to the Tamper Switch (SW1) on the PCB (see below).
1 Amp
0.5 Amp
0.5 Amp
AUX KPAD TRIG LS
15
AC
AC
BATTERY
+
14
A B PHONE
EE Volume
+
VADJ
SW 1
BELL
STRB
BTMP ZONE
TAMP 1
ZONE 2
ZONE 7
ZONE
6
ZONE
5
ZONE
4
ZONE
3
ZONE 8
ZONE
BELL AUX BATT
T1
RL1
S1
X1
IC12
15
LED
+
__
_
R
Tamper
Post
Tamper
Spring
Fit Tamper to SW1

10
Cable Entry
Hole
Knockout
Hole A
Knockout
Hole B
Hinge Slot
Hinge Slot
Mounting Holes
Mounting Holes
Tamper Tab
Screw Hole
Base Clip Base Clip
Connecting Keypads, Sounders and a Speaker to the Accord XPC
Table 2.1 LED/Icon Keypad Wiring
Note: Up to four keypads can be connected to the
system. Keypads can be wired to the control
panel independently, in series, or in a star
configuration. Both LED and Icon keypads
can be connected to the same panel.
lenaPdapyeK
+xuAev+
–xuAev–
DAP'Kdapk
KnocKnockoutout
Knockout
EV8-2000
EV8-2000
>PC+ABS FR<>PC+ABS FR<
>PC+ABS FR<>PC+ABS FR<
Knock
Knock
Knockout
Knockout
Knockout
Holes
Mounting
Hole
Tamper Tab
Screw Hole
Knockout
Hole
Retained
Fastening Screw
Mounting
Hole
Fig 2.3 Accord xpC LED Keypad
Fig 2.4 Accord xpC Icon Keypad
Mounting and Wiring the Icon Remote Keypad
To mount and wire the Accord xpC Icon keypad:
1. Loosen the retained fastening screw on the bottom
of the keypad. Gently pull the front and back
keypad casing apart.
2. Route the wiring from the control panel through
any of the five knockout holes on the back case
of the keypad. Tip: Use a knife to help dislodge
knockouts.
4. Securely mount the back case to a wall or
electrical box via the mounting holes. Ensure The
Tamper Tab is securely screwed down.
3. The remote keypad PCB should be wired to the
control panel PCB as outlined in Table 2.1 LED/
Icon Keypad Wiring.
5. Re-attach the keypad front to the back case,
aligning the hinges on the top. Gently apply
pressure to the keypad front and tighten the
retained fastening screw on the bottom.
5. Re-attach the keypad front to the back case by inserting the hinges on the keypad front into
the hinge retainers on the bottom of the keypad back case. Gently apply pressure to the
keypad front until the two retaining tabs click firmly into place.
1. Press down the two base clips recessed on
top of the keypad while gently pulling the
two halves of the case apart.
2. Route the wiring from the Control Panel
through the Cable Entry Hole on the back
case. Use Knockout Holes A or B if
alternative routes are necessary. Tip: Use
a knife to help dislodge knockouts.
3. Securely mount the back case to a wall or
electrical box via the mounting holes.
Ensure The Tamper Tab is securely screwed
down.
4. The remote keypad PCB should be wired
to the control panel PCB as outlined in Table
2.1 LED/Icon Keypad Wiring.
Mounting and Wiring the LED Remote Keypad
To mount and wire the Accord xpC LED keypad:

11
IE1-1230-B February 2001
Connecting the External Sounders
Connections for Self Actuating Bells and Bell/Siren combinations should be made as
outlined in table 2.2 and table 2.3.
Table 2.2 Connections for SABs Table 2.3 Connections for Bell/Siren only
Wiring the Loudspeaker
A 16 ΩLoudspeaker may be connected between the LS terminal and the Aux + terminal.
Wiring the Zones
The zones on the Accord xpC can function in one of three modes; Normal Closed, Double
Balanced and U.S. End of Line. Zone wiring for the three modes are illustrated below.
The mode of operation for the zones is programmed from Group 5  Option 9 Zone
Configuration.
It is strongly recommended that the maximum cable run on each zone is 100 m.
Figure 2.5 Zone Wiring for Normal Closed
Figure 2.6 Zone Wiring for Double Balanced Zones
Figure 2.7 Zone Wiring for US EOL Zones
Zone Links
The eight zones, the zone tamper and the bell tamper circuits can be shorted using the
Zone Links provided in the ancillaries pack. It is strongly recommended that this be done
if any of the circuits are not to be used. If Double Balanced or U.S. End of Line, fit a 1K
resistor across the zone and not the shorting link.
1K
1K
1K
snoitcennoC BASrof
lenaPlleB
+LLEBffOdloH/ylppuSevitisoP
LLEB– evitageNlangiS/pirT
PMATLLEB– ffO–dloH/ylppuSevitageN
LLEBR–PMATnruteRrepmaTevitageN
BRTSlangiSevitageNebortS
rofnoitcennoC ylnoneriS/lleB
lenaPlleB
+LLEBevitisoPebortS&lleB
-LLEBevitageNlleB
-PMATLLEBnommoCWSrepmaT
LLEBPMATR-C/NWSrepmaT
BRTSevitageNebortS

12
Connecting Power to the System
Mains Power
Mains power for the system is 230 V a.c. 50 Hz (a 24-hour unswitched source). The
mains cable should be brought into the control cabinet through the mains entry point
under the mains terminal block and firmly secured using the mains clamp and screws
provided in the ancillaries pack. The mains cable should be wired to the mains input
terminal block as illustrated in figure 2.8.
Note: No connections should be made to the Earth terminal on the mains
terminal block.
If the cable is three core the green/yellow earth core should be trimmed back to the outer
sheath such that none is visible.
The secondary side of the mains transformer should be connected to the two terminals on
the control panel PCB marked AC.
Example: Do not apply power to the transformer at this point.
Stand-by Battery
The system can be protected against mains failure by the addition of a Stand-by battery
with a maximum rating of 7.2 Ahr.
Calculate the system quiescent current draw and multiply this by the number of hours
required for stand-by cover, for example, 200 mA × 12 hours = 2.4 Ahr. Install the next
battery size up, in this case 2.8 Ahr.
Connecting the Accord XPC to the PSTN
The Telecommunications Network Voltage (TNV) port (terminals A and B on TB5) must
be permanently connected (hard-wired) to the PSTN via a BT master socket, refer to
figure 2.9.
Note: If the BT master socket is the newer type (NTE5/CTE5), then the connection can
be carried out by the installation engineer. If the BT master socket is not an
NTE5/CTE5, then the connection must be made by the network operator.
From a.c. mains input
(entering below terminal block)
Brown Wire
Blue Wire
AC
Accord XP C PCB
Mains Transformer
Primary Side
Mains Transformer
Secondary Side
200 mA
mains fuse
TB6
GND
Figure 2.8 Mains Connections to the Accord
Note: Connections shown as dashed lines are
factory made. Make no connections to
the earth terminal on the mains terminal
block.

13
IE1-1230-B February 2001
Using cable suitable for connection to 2.8 mm diameter screw terminals, strip back
approximately 20 mm of the outer sheath and then remove approximately 4 mm of the
insulation from the wires to be connected to the Accord xpC.
Connect terminals 2 and 5 on the BT Master socket accross the A and B terminals (TB5)
on the Accord xpC, see figure 2.9.
Example: The control panel enclosure must not be opened before isolating the mains
supply. Illumination of the green power LED indicates the presence of a.c.
mains supply. The cover of the Accord xpC enclosure must be replaced
whenever any connection to the BT master socket is completed to prevent
exposure to potentially lethal voltages from the PSTN.
Connecting Additional Telecom Apparatus
A BT Master socket, allowing additional telecom apparatus to be connected in series
with the Accord xpC can be connected to the TNV port PHONE (TB5) on the Accord
xpC, see figure 2.9.
Note: The Accord xpC should be the first module on the line.
REN and SEN Numbers
It is possible to simultaneously connect a number of items to one line of the PSTN. The
limit is determined by summing the Ringer Equivalence Number (REN) shown on each
item of apparatus, ensuring that the sum of RENs is not more than four.
The REN of the Accord xpC is one (1).
Assume that all British Telecom equipment has a REN of one unless otherwise marked.
More than one item of series apparatus may be connected to the Accord xpC ports marked
phone. This is limited by summing the Series Equivalence Number (SEN) shown on each
item of series connected apparatus, ensuring that the sum of the SENs is not more than
one (1). The total series resistance, including cabling, must not exceed 50 Ohms.
Incoming
PSTN Line
A B
Accord XP C PCB
PHONE
TB5
2
5
2
5
BT Master socket ( NTE5 / CTE5 ). BT Master socket (
NTE5 / CTE5 ).
Figure 2.9. Connecting the Accord XPC to the PSTN
Note: Terminals 2 and 5 on the BT Master Socket should be hard-wired to the A and B terminals (TB5)
on the Accord xpC. This connection is polarity independant.
It is strongly recommended that the Accord xpC panel is the only device on the line.
If another device is to be connected to the line, connect PHONE terminals on the Accord xpC
PCB to terminals 2 and 5 on a second BT Master Socket

14
 The SEN of the Accord xpC is 0.3.
 Nominal series resistance is 90 milli-ohms.
 Nominal insertion loss is 0.1 dB.
Note: Difficulties may be experienced when making calls from other apparatus if the
total SEN value approaches one or the total series resistance 50 ohms. If such
difficulties are experienced, please consult the Accord XPC installer or supplier,
not BT.
It is recommended that the PSTN should have the following facilities:
 Outgoing calls only (when used as dialler only).
 Direct exchange.
 Tone dialling.
Private Branch Exchange (PBX) Connection
The Accord xpC is only approved for use with BABT approved PBXs. The correct
operation of the Accord XPC can not be guaranteed under all possible conditions of
connection to compatible PBXs.
When connected to a PBX, the Accord xpC can be programmed to pause for two seconds,
between the dialling of the digits.
Final Mounting
Once all cable entries have been made to the enclosure and connected to the control panel
the enclosure should be firmly mounted in place using the two mounting holes at the
bottom of the control panel enclosure.
Securing and Removing the Enclosure Lid
To secure the lid in place:
1. Hold the lid at an angle of 90oto the enclosure base.
2. Place the eight (two groups of four) lid hinges into the lid hinge recesses on
the lip of the Accord xpC enclosure.
3. Swing the lid down such that the hinges swing into the holes in the top of
the enclosure rim and the lid fits snugly on top of the enclosure base.
4. Fix the lid in place by inserting and tightening the two M4×20 mm pan head
screws provided, into the screw holes in the bottom corners of the lid.
Note: To remove the lid, simply reverse the process.