66250010-EN - V2.0 - 24/09/18
9
Telephone Interface Module
Art. 380N/UK Telephone Interface Module - Installation Instructions
CABLE SIZE GUIDE
Refer to the tables below for the connections for the mains power supply input to the
Art.380N/UK
and the lock release connections
from the
Art.380N/UK
relay output.
230-240VAC MAINS INPUT
Distance / Cable
no more than 20m from switched fuse spur
Cable Type
Cross Sectional Area (CSA)
1.0mm
2
2 core, 1.0mm
2
mains flex
LOCK RELEASE CONNECTIONS (C/NO TERMINALS)
Distance
20m
50m
100m
Cross Sectional Area (CSA)
0.5mm
2
1.0mm
2
1.5mm
2
The maximum acceptable resistance for the above cables = 3 Ohms or less for best possible performance.
For all other connections refer to the table below.
Minimum Cable Requirements
Cable Type
Connections
50m
100m
200m
For the connections
shown in the table
it is recommended
that a multipair cable
compliant to
CW1308
spec is used for internal
wiring. For all external
wiring an external grade
equivalent multipair
cable that is compliant
to
CW1128
spec should
be used.
2
0.25mm
2
0.35mm
2
0.5mm
2
1
0.25mm
2
0.35mm
2
0.5mm
2
3
0.5mm
2
0.75mm
2
1.0mm
2
6
0.25mm
2
0.35mm
2
0.5mm
2
NO
Refer to
lock release connections
table above
C
A2
0.25mm
2
0.35mm
2
0.5mm
2
A1
0.25mm
2
0.35mm
2
0.5mm
2
+12
0.5mm
2
0.75mm
2
1.0mm
2
The maximum acceptable resistance for the connections:
2
,
1
,
6
,
A2
and
A1
= 7.5 Ohms or less for best possible performance.
The maximum acceptable resistance for the connections:
3
,
NO
,
C
and
+12
= 3 Ohms or less for best possible performance. Please
note that all cable sizes shown in the tables above are the minimum cable requirements.
For the connections
L1
,
L2
,
T1
and
T2
it is recommended that a multipair BT spec cable,
CW1308
or equivalent should be used.
IMPORTANT NOTE: Only bare copper (BC) cable should be used (solid or stranded is acceptable)
.
Please be aware that when
selecting a cable the following should NOT be used: Copper Coated Steel (CCS) and Copper Clad Aluminium (CCA). While these
types of cable may offer a low cost solution they will have a higher resistance than pure copper cable and can affect the overall
performance of the system therefore Videx DO NOT recommend these types of cable.
GENERAL INSTALLATION NOTES
• Check that all components are free from damage before installing (do not proceed with installation in the event of damage).
• Keep all packaging away from children.
• Do not obstruct the ventilation openings or slots on any of the devices.
• All connections to mains voltages must be made to the current national standards (I.E.E. wiring regulations for the UK or
the appropriate standards of your country).
• Install an appropriate fused spur or isolation switch to isolate the mains.
• Isolate the mains before carrying out any maintenance work on the system.
• Avoid water ingress into the rear of the module, always seal the module frame after installation using a suitable silicon
based sealant.
• All intercom and access control cables must be routed separately from the mains.
General Directions for Installation