Ampetronic HLS-2B Guide

HLS-2B
Hearing Loop
Driver
Installation &
Commissioning
Handbook

HLS-2B HANDBOOK
Box Contents
1 x HLS-2B
1 x
1 x A6 Deaf Logo
1 x Installation Handbook
P-Clip 3.2mm
1 x P-Clips 5.0mm
1 x P-Clips 6.5mm
3 x M3 x 6 PAN Screws
Handbook Contents
!
!Introduction
!Quick Start
!Installation
!Troubleshooting
!Technical Specification
!Warranty
!Declaration Of Conformity
!Accessories
Safety
This symbol is used to alert the user to important
operating or maintenance instructions.
The Lightning bolt triangle is used to alert the user
to the risk of electric shock.
SAFETY
1. It is important to read these instructions, and to follow them.
2. Keep this instruction manual in an accessible place.
3. Do not install this equipment near any heat sources such as radiators, heating
vents or other apparatus that produces heat.
4. WARNING: THIS APPARATUS MUST BE EARTHED.
5. The HLS-2B is designed to be permanently connected apparatus and must be
installed with all applicable installation regulations. A readily accessible all pole
mains disconnect device shall be incorporated in the building installation power
wiring.
6. The apparatus should not be exposed to dripping or splashing and should have
no objects used for storing liquids placed upon it.
7. Mount the HLS-2B with the wiring entering from the side of the unit. Position
cables in a neat manner, and tighten the P-Clips to ensure the cables are fully
restrained. The cables should be positioned in such a manner that any liquid
spilled on to them will not run into the unit. Cable access is via 3 cable entry
points on the end of the unit. If the installation cables do not fill the entry hole or
any hole isn’t used then the hole should be masked such that any gaps are
<4mm wide.
8. Do not mount the unit with the battery terminals facing downwards.
9. Refer all servicing and installation to qualified personnel.
WARNING: Isolate AC power externally before servicing or replacing fuses.
10.The amplifier generates some heat during normal operation and needs
adequate ventilation. It should not be fitted in a fully enclosed space.
11.The battery should not be exposed to heat, sunshine or fire.
The has been designed as a high quality stand-alone induction loop driver
for use in small to medium size lifts, although the rugged construction may be
suited to other industrial applications.
The unit is designed to drive a loop constructed out of custom built metal bars,
which is a very low impedance. Ordinary wire can sometimes be used if it can be
installed inside the lift car, but care must be taken to ensure the loop satisfies the
unit’s load requirements.
All versions have:
#two separate audio inputs,
#230V or 115V AC power supply (factory set option)
#transformer coupled loop output.
The standard unit has two low-Z speaker line level input.
All connections (except the ‘Protective Earth Terminal’) are via vibration-resistant
cage clamp terminals which are quick and easy to connect.
HLS-2B
INTRODUCTION
Basic Wiring
Audio Input signal
Switched
& fused
power
source
Loop
Twisted Pair
Cable to Loop
HLS-2B

HLS-2B HANDBOOK
Box Contents
1 x HLS-2B
1 x
1 x A6 Deaf Logo
1 x Installation Handbook
P-Clip 3.2mm
1 x P-Clips 5.0mm
1 x P-Clips 6.5mm
3 x M3 x 6 PAN Screws
Handbook Contents
!
!Introduction
!Quick Start
!Installation
!Troubleshooting
!Technical Specification
!Warranty
!Declaration Of Conformity
!Accessories
Safety
This symbol is used to alert the user to important
operating or maintenance instructions.
The Lightning bolt triangle is used to alert the user
to the risk of electric shock.
SAFETY
1. It is important to read these instructions, and to follow them.
2. Keep this instruction manual in an accessible place.
3. Do not install this equipment near any heat sources such as radiators, heating
vents or other apparatus that produces heat.
4. WARNING: THIS APPARATUS MUST BE EARTHED.
5. The HLS-2B is designed to be permanently connected apparatus and must be
installed with all applicable installation regulations. A readily accessible all pole
mains disconnect device shall be incorporated in the building installation power
wiring.
6. The apparatus should not be exposed to dripping or splashing and should have
no objects used for storing liquids placed upon it.
7. Mount the HLS-2B with the wiring entering from the side of the unit. Position
cables in a neat manner, and tighten the P-Clips to ensure the cables are fully
restrained. The cables should be positioned in such a manner that any liquid
spilled on to them will not run into the unit. Cable access is via 3 cable entry
points on the end of the unit. If the installation cables do not fill the entry hole or
any hole isn’t used then the hole should be masked such that any gaps are
<4mm wide.
8. Do not mount the unit with the battery terminals facing downwards.
9. Refer all servicing and installation to qualified personnel.
WARNING: Isolate AC power externally before servicing or replacing fuses.
10.The amplifier generates some heat during normal operation and needs
adequate ventilation. It should not be fitted in a fully enclosed space.
11.The battery should not be exposed to heat, sunshine or fire.
The has been designed as a high quality stand-alone induction loop driver
for use in small to medium size lifts, although the rugged construction may be
suited to other industrial applications.
The unit is designed to drive a loop constructed out of custom built metal bars,
which is a very low impedance. Ordinary wire can sometimes be used if it can be
installed inside the lift car, but care must be taken to ensure the loop satisfies the
unit’s load requirements.
All versions have:
#two separate audio inputs,
#230V or 115V AC power supply (factory set option)
#transformer coupled loop output.
The standard unit has two low-Z speaker line level input.
All connections (except the ‘Protective Earth Terminal’) are via vibration-resistant
cage clamp terminals which are quick and easy to connect.
HLS-2B
INTRODUCTION
Basic Wiring
Audio Input signal
Switched
& fused
power
source
Loop
Twisted Pair
Cable to Loop
HLS-2B

QUICK START
366m m
158.9mm
326m m
10m m
79.2mm
DC Battery -
DC Battery +
Mains Live In
Mains Neutral In
DCOut +
DC Out -
Battery +Battery
-
Mains Live In
Mains Neutral In
Loop Out
Input 2
Input 1
23mm 23mm
Protective Earth In
1. Fit HLS-2B on top of lift where it will not be vulnerable to damage and
where the cables will be protected.
2. Fit loop cable / bars (refer to fitting section)
3. Ensure loop is insulated from lift body.
4. Connect loop to amplifier using feed cables. Ensure feed pair is twisted
together.
5. Connect Signal Inputs (see input connection drawings) using twisted
pair cable. Connect the positive battery terminal. Connect AC power
(see points 5 and 9 in Safety section)
6. Connect AC power (see points 5 and 9 in Safety section)
7. Turn IN1, IN2, MLC and 'CURRENT' controls fully anticlockwise
(minimum)
8. Apply an input signal (e.g. intercom). Increase the input control until the
Green 'Compression' LED begins to light.
9. Repeat item8 for the second input (if used). Only apply one audio signal
at a time when setting up the system.
10. Adjust the CURRENT control until the Yellow 'Loop Current' LED lights
at peaks in the input signal. NOTE: Once the CURRENT control is set,
do not adjust it again.
11. Adjust the MLC control to give the best clarity of sound.
12. Listen to the loop.

QUICK START
366m m
158.9mm
326m m
10m m
79.2mm
DC Battery -
DC Battery +
Mains Live In
Mains Neutral In
DCOut +
DC Out -
Battery +Battery
-
Mains Live In
Mains Neutral In
Loop Out
Input 2
Input 1
23mm 23mm
Protective Earth In
1. Fit HLS-2B on top of lift where it will not be vulnerable to damage and
where the cables will be protected.
2. Fit loop cable / bars (refer to fitting section)
3. Ensure loop is insulated from lift body.
4. Connect loop to amplifier using feed cables. Ensure feed pair is twisted
together.
5. Connect Signal Inputs (see input connection drawings) using twisted
pair cable. Connect the positive battery terminal. Connect AC power
(see points 5 and 9 in Safety section)
6. Connect AC power (see points 5 and 9 in Safety section)
7. Turn IN1, IN2, MLC and 'CURRENT' controls fully anticlockwise
(minimum)
8. Apply an input signal (e.g. intercom). Increase the input control until the
Green 'Compression' LED begins to light.
9. Repeat item8 for the second input (if used). Only apply one audio signal
at a time when setting up the system.
10. Adjust the CURRENT control until the Yellow 'Loop Current' LED lights
at peaks in the input signal. NOTE: Once the CURRENT control is set,
do not adjust it again.
11. Adjust the MLC control to give the best clarity of sound.
12. Listen to the loop.

Power
input
Block Diagram Compression LED Output Current LED
Output
MLC Adjust
Drive
Loop
output
90V-264V UPS
XP
BCS75US13C
Fuse
Input 1
Input 2
MLC AGC
DC power to
system
Twist together
Twist together
Low Z Speaker feed
Low Z Speaker feed
Input 1
Input 2
Inputs
HLS-2B
In1
HLS-2B
In2
INSTALLATION
Tools
You will require the following:
Location
The amplifier should be mounted where :
!it is protected from drips or sprays of water
!it is not vulnerable to mechanical damage
!the controls can be accessed through the open cover.
The unit must be close to the loop; when used on a lift, it is typically mounted on
top of the lift car.
Connections
GENERAL: Open the cage clamp terminals using a flat bladed screwdriver. See
Layout drawing for location of each terminal and details of its operation.
LOOP: Connect the loop cable ends to the loop output connector. make sure that
the feed cable (the 2-wire section between the amplifier and loop) is tightly
twisted together and less than 3m in length. In lifts, the loop connecting wires
2
should not be less than 2.5mm (AWG 12) area. See below for loop design
INPUTS: Connect inputs as shown in the diagram.
For all inputs, use twisted pair cables, preferably with screen.
AC POWER: The HLS-2B can be supplied in 115VAC or 230VAC versions.
Check that the version you have is compatible with your power supply.
Isolate external AC power source before working on power connections
Connect incoming AC Earth to the ‘Protective earth terminal’. See SAFETY
notes 4 & 5.
Connect the incoming Live and Neutral to the relevant terminals, as marked.
!Phillips screwdriver
!Small flat blade scewdriver
!Rachet crimp tool

Power
input
Block Diagram Compression LED Output Current LED
Output
MLC Adjust
Drive
Loop
output
90V-264V UPS
XP
BCS75US13C
Fuse
Input 1
Input 2
MLC AGC
DC power to
system
Twist together
Twist together
Low Z Speaker feed
Low Z Speaker feed
Input 1
Input 2
Inputs
HLS-2B
In1
HLS-2B
In2
INSTALLATION
Tools
You will require the following:
Location
The amplifier should be mounted where :
!it is protected from drips or sprays of water
!it is not vulnerable to mechanical damage
!the controls can be accessed through the open cover.
The unit must be close to the loop; when used on a lift, it is typically mounted on
top of the lift car.
Connections
GENERAL: Open the cage clamp terminals using a flat bladed screwdriver. See
Layout drawing for location of each terminal and details of its operation.
LOOP: Connect the loop cable ends to the loop output connector. make sure that
the feed cable (the 2-wire section between the amplifier and loop) is tightly
twisted together and less than 3m in length. In lifts, the loop connecting wires
2
should not be less than 2.5mm (AWG 12) area. See below for loop design
INPUTS: Connect inputs as shown in the diagram.
For all inputs, use twisted pair cables, preferably with screen.
AC POWER: The HLS-2B can be supplied in 115VAC or 230VAC versions.
Check that the version you have is compatible with your power supply.
Isolate external AC power source before working on power connections
Connect incoming AC Earth to the ‘Protective earth terminal’. See SAFETY
notes 4 & 5.
Connect the incoming Live and Neutral to the relevant terminals, as marked.
!Phillips screwdriver
!Small flat blade scewdriver
!Rachet crimp tool

Loop Design
The loop installed in the lift car needs to be designed and fitted correctly if the
system is to be effective.
Most lifts are built with metal walls and ceilings. Because of the shielding effect of
the metal ‘box’ in such lifts, the loop cable needs to be on the INSIDE of the car.
This is normally achieved by constructing a special loop from metal bars fixed to,
but insulated from, the ceiling. (This can be supplied by Ampetronic).
If the ceiling is not metal, or a suitable hidden location can be found inside a metal
lift car, normal insulated wire of 2.5 mm² or 4 mm² can be used.
The connection from the loop to the equipment should be made using two 2.5 mm²
wires twisted together.
INPUTS
AUDIO SYSTEM
Power Supply
Supply Voltage Range: 90V-264V (mains) Freq Response:
100Hz to 5kHz ±1.5dB relative to 1kHz at low
Connector: Fused screw terminal
level, measured as loop current with no metal
Power Consumption: 230V AC into rated
2loss correction
load, 1.5mm solid core or untinned
stranded wire. Compression:
Fuse: T 1A L (120V) Time constants optimised for speech
Fuse: T 630mA L (230V)
Power Consumption (230V): 12W (110mA) AGC:
continuous pink noise, 25W (190mA) Dynamic Range: >36dB
continuous sine, 3.25W (<60mA) quiescent Control: By adjusting input level/gain
Indication: LED on PCB Indication: LED on PCB
Inrush: <±25Apk
MLC (Metal Loss Correction):
Inputs 1 & 2 0 dB to 3dB / Octave boost.
Connector: Wago 264 Cage Clamp for 0.78 Correction: Adjustable
2
- 2.5mm solid core or untinned fine
stranded wire PHYSICAL
Dimensions:
Line level
Rated source Impedance: 1.8 kW
differential
Input Isolation: 1500 V
Rated source EMF: (Sensitivity) -16dBu for
full output
Overload: >+22dBu
SnR: >90dB
Adjustment: Level control, per channel Standards:
Meets relevant CE, EMC and safety
OUTPUTS standards.
IEC 60118-4 AFILS
Loop Output
Connector: Wago 264 Cage Clamp for 0.78
2Environment:
- 2.5mm solid core or untinned fine
stranded wire
IP22 <90% relative humidity, -20 to +50°C
Compliance Voltage: 1.1Vrms (1.6V )
pk
(battery float life derates by 4% per °C above
Max output current: 11Arms
25°C)
Rated time for delivery: 1min
Rated temperature limited output current
Please contact Ampetronic if you need further
(pink): 6Arms
assistance.
Rated THD: <1%
Output Impedance: >1W
Current Adjustment: Full Range
Current Indication: LED indicates >3Arms
Loop Impedance
0.1Wto 0.2W, 0.14Wreactive at 1.6kHz
Rated load: 9uH, 0.1R
Weight: 3kg
Length: 366mm
Width: 158mm
Height: 49mm
TECHNICAL SPECIFICATIONS
TROUBLESHOOTING
For correct operation, you should have the following LEDs illuminated
Power (Green)
Compression (Green) only whilst audio signal is applied to an input
Loop Current (Yellow) only at peaks of audio signal
Power LED not illuminated
Battery discharged and external AC mains supply off - turn on external AC mains
supply to charge battery and to operate unit.
Compression LED not illuminated at any time
No inputs connected - connect an input as described above
Relevant IN control not turned up far enough - adjust control as appropriate
Input signal level too low - check that input signal is >120mVrms for Lo-Z speaker
inputs.
Current LED not illuminated (even at peaks of signal)
Loop not connected or open circuit - See above for correct loop location, and
check loop continuity using a resistance meter. Value should be under 300mW.
Relevant IN control not turned up far enough - adjust control as appropriate
No field received in the loop area
If Current LED is illuminated at peaks of signal, but no field is received in the loop
area, then the loop is installed in the wrong place or there is a short circuit
between the ends of the feed cable. Read the 'Loop design' section above to
confirm loop design.
If Current LED is not illuminated, see previous troubleshooting options for a
solution.

Loop Design
The loop installed in the lift car needs to be designed and fitted correctly if the
system is to be effective.
Most lifts are built with metal walls and ceilings. Because of the shielding effect of
the metal ‘box’ in such lifts, the loop cable needs to be on the INSIDE of the car.
This is normally achieved by constructing a special loop from metal bars fixed to,
but insulated from, the ceiling. (This can be supplied by Ampetronic).
If the ceiling is not metal, or a suitable hidden location can be found inside a metal
lift car, normal insulated wire of 2.5 mm² or 4 mm² can be used.
The connection from the loop to the equipment should be made using two 2.5 mm²
wires twisted together.
INPUTS
AUDIO SYSTEM
Power Supply
Supply Voltage Range: 90V-264V (mains) Freq Response:
100Hz to 5kHz ±1.5dB relative to 1kHz at low
Connector: Fused screw terminal
level, measured as loop current with no metal
Power Consumption: 230V AC into rated
2loss correction
load, 1.5mm solid core or untinned
stranded wire. Compression:
Fuse: T 1A L (120V) Time constants optimised for speech
Fuse: T 630mA L (230V)
Power Consumption (230V): 12W (110mA) AGC:
continuous pink noise, 25W (190mA) Dynamic Range: >36dB
continuous sine, 3.25W (<60mA) quiescent Control: By adjusting input level/gain
Indication: LED on PCB Indication: LED on PCB
Inrush: <±25Apk
MLC (Metal Loss Correction):
Inputs 1 & 2 0 dB to 3dB / Octave boost.
Connector: Wago 264 Cage Clamp for 0.78 Correction: Adjustable
2
- 2.5mm solid core or untinned fine
stranded wire PHYSICAL
Dimensions:
Line level
Rated source Impedance: 1.8 kW
differential
Input Isolation: 1500 V
Rated source EMF: (Sensitivity) -16dBu for
full output
Overload: >+22dBu
SnR: >90dB
Adjustment: Level control, per channel Standards:
Meets relevant CE, EMC and safety
OUTPUTS standards.
IEC 60118-4 AFILS
Loop Output
Connector: Wago 264 Cage Clamp for 0.78
2Environment:
- 2.5mm solid core or untinned fine
stranded wire
IP22 <90% relative humidity, -20 to +50°C
Compliance Voltage: 1.1Vrms (1.6V )
pk
(battery float life derates by 4% per °C above
Max output current: 11Arms
25°C)
Rated time for delivery: 1min
Rated temperature limited output current
Please contact Ampetronic if you need further
(pink): 6Arms
assistance.
Rated THD: <1%
Output Impedance: >1W
Current Adjustment: Full Range
Current Indication: LED indicates >3Arms
Loop Impedance
0.1Wto 0.2W, 0.14Wreactive at 1.6kHz
Rated load: 9uH, 0.1R
Weight: 3kg
Length: 366mm
Width: 158mm
Height: 49mm
TECHNICAL SPECIFICATIONS
TROUBLESHOOTING
For correct operation, you should have the following LEDs illuminated
Power (Green)
Compression (Green) only whilst audio signal is applied to an input
Loop Current (Yellow) only at peaks of audio signal
Power LED not illuminated
Battery discharged and external AC mains supply off - turn on external AC mains
supply to charge battery and to operate unit.
Compression LED not illuminated at any time
No inputs connected - connect an input as described above
Relevant IN control not turned up far enough - adjust control as appropriate
Input signal level too low - check that input signal is >120mVrms for Lo-Z speaker
inputs.
Current LED not illuminated (even at peaks of signal)
Loop not connected or open circuit - See above for correct loop location, and
check loop continuity using a resistance meter. Value should be under 300mW.
Relevant IN control not turned up far enough - adjust control as appropriate
No field received in the loop area
If Current LED is illuminated at peaks of signal, but no field is received in the loop
area, then the loop is installed in the wrong place or there is a short circuit
between the ends of the feed cable. Read the 'Loop design' section above to
confirm loop design.
If Current LED is not illuminated, see previous troubleshooting options for a
solution.

This product carries a five year parts and labour warranty from date of
shipment from Ampetronic. To qualify for the five year warranty, the product
must be registered at (products/warranty), without
which the warranty will be valid for two years only.
The warranty could be invalidated if the instructions in this handbook are
not followed correctly, or if the unit is misused in any way.
www.ampetronic.co
Note: Battery is only covered by a 1 year warranty.
Manufacturer: Ampetronic Ltd
Unit 2, Trentside Business Village
Farndon Road
Newark
NG24 4XB
Declares that the product:
Description: Hearing Loop Driver
Type name: HLS-2B
Conforms to the following Directive(s) and Norm(s):
Directive 2004/108/EC
EMC: EN55103-1 : 2009+A1:2012 Emission
EN55103-2 : 2009 Immunity
Directive 2006/95/EC
Safety: EN60065 : 2014
Directive 2011/65/EU RoHS
Date: January 2016
J.R. Pieters
Managing Director
WARRANTY
DECLARATION OF CONFORMITY
UP19501-3

This product carries a five year parts and labour warranty from date of
shipment from Ampetronic. To qualify for the five year warranty, the product
must be registered at (products/warranty), without
which the warranty will be valid for two years only.
The warranty could be invalidated if the instructions in this handbook are
not followed correctly, or if the unit is misused in any way.
www.ampetronic.co
Note: Battery is only covered by a 1 year warranty.
Manufacturer: Ampetronic Ltd
Unit 2, Trentside Business Village
Farndon Road
Newark
NG24 4XB
Declares that the product:
Description: Hearing Loop Driver
Type name: HLS-2B
Conforms to the following Directive(s) and Norm(s):
Directive 2004/108/EC
EMC: EN55103-1 : 2009+A1:2012 Emission
EN55103-2 : 2009 Immunity
Directive 2006/95/EC
Safety: EN60065 : 2014
Directive 2011/65/EU RoHS
Date: January 2016
J.R. Pieters
Managing Director
WARRANTY
DECLARATION OF CONFORMITY
UP19501-3

Ampetronic Ltd
Tel: [phone] Fax: [phone]
Email: [email protected]
www.ampetronic.co