RPS10
RACK MOUNT
POWER SUPPLY
USER
GUIDE
PUBLICATION AP2142
Warranty
LIMITED ONE YEAR WARRANTY
This product has been manufactured in the UK by ALLEN & HEATH LTD and is warranted to be free from defects in materials
or workmanship for a period of one year from the date of purchase by the original owner.
To ensure the high level of performance and reliability for which this equipment has been designed and manufactured please read
the User Guide before use.
In the event of a failure notify and return the defective unit to ALLEN & HEATH Ltd. or its authorised agent as soon as possible
for repair under warranty subject to the following conditions:
CONDITIONS OF WARRANTY:
1. The product has been installed and operated in accordance with the instructions in the installation instructions in the User
Guide.
2. The product has not been subject to misuse either intended or accidental, neglect, or alteration other than as described in the
installation instructions in the User Guide or approved by ALLEN & HEATH Ltd.
3. Any necessary adjustment, alteration, or repair has been made by ALLEN & HEATH Ltd. or it's authorised agent.
4. The defective unit is to be returned carriage prepaid to ALLEN & HEATH Ltd. or it's authorised agent with proof of purchase.
5. Units to be returned should be packed to avoid transit damage.
These terms of warranty apply to UK sales. In other territories the terms may vary according to legal requirements.
Allen & Heath Agent:
copyright © 1995 Allen & Heath Ltd. All rights reserved.
Publication AP2142 Issue 1
Allen & Heath Ltd.
Kernick Industrial Estate,
Penryn,
Cornwall.
England.
TR10 9LU
Tel: 01326 372070
Fax: 01326 377097
IMcB 30-1-95
Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor.
Allen & Heath Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained
in this manual.
No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by means, electronic,
electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written
permission of Allen & Heath Ltd.
It is recommended that all maintenance and service on the product should be carried out by Allen & Heath Ltd. or its authorised
agents. Allen & Heath Ltd cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair
by unauthorised personnel.
RPS10 Power Supply
INTRODUCING THE RPS10
The RPS10 is a linear power supply which, like other linear supplies, produces DC voltages by rectifying, smoothing and
regulating AC voltages from the secondary windings of a mains transformer.
Allen & Heath mixing consoles employ a number of DC voltage supply levels in their operation and these are provided at the
output of each unit.
IMPORTANT: Please read this manual carefully before connecting your
RPS10 power supply to the mains.
CONFORMS TO BS EN 60065 FOR SAFETY
This manual covers the RPS10 unit, which has been designed to conform to BS EN 60065, equivalent to IEC 65 (1985) ed 5 and
BS415 1990, with CENELEC deviations.
Precautions and Safety instructions
General Precautions
Avoid storing or using the RPS10 in conditions of excessive heat or cold, or in positions where it is likely to be subjected to
vibration, dust or moisture. Do not use any liquids to clean the exterior of the unit: a soft, dry cloth or brush is ideal.
SOLVENTS MAY CAUSE DAMAGE TO PAINT OR PLASTIC PARTS
Handling and Transport
The RPS10 is supplied in a rugged carton box. If it is necessary to move the unit any distance after installation, it is recommended
that this carton is used to protect it. Be sure to disconnect all cabling before moving. If the RPS10 is to be moved regularly (e.g.
touring) it is recommended that it is installed in a foam lined case. At all times avoid applying excessive force to any switches or
connectors.
Using the RPS10
ALWAYS MAKE SURE THAT THE POWER SUPPLY HAS BEEN SET TO THE SAME AC
SOURCE VOLTAGE AS DERIVED VIA THE MAINS SOCKET
Always switch the power supply off before connecting or disconnecting the console power cable, removing or installing modules
and servicing. In the event of an electrical storm, or large mains voltage fluctuations, immediately switch off the power supply and
disconnect from the mains supply.
During normal operation there is some heat generated, the dissipation of which is achieved through a heatsink and ventilated
chassis.
DO NOT COVER THE UNIT DURING OPERATION
THIS UNIT CONTAINS NO USER SERVICEABLE PARTS, REFER ALL SERVICING TO A
QUALIFIED ENGINEER, THROUGH THE APPROPRIATE DEALER NETWORK
Mains Voltage Setting
SPECIAL ATTENTION SHOULD BE GIVEN TO THE FOLLOWING INFORMATION
The RPS10 is factory set to operate from your local AC mains supply. It is important to check that the RPS10 unit has the correct
voltage setting as marked on the rear panel of the power supply. Confirm that the voltage labelling matches the local AC mains
supply in your area.
USE:
100 V marking for ac mains input 100-110 V ac
110 V marking for ac mains input 110-120 V ac
120 V marking for ac mains input 120-125 V ac
220 V marking for ac mains input 210-230 V ac
240 V marking for ac mains input 230-264 V ac
DO NOT ATTEMPT TO USE THE POWER SUPPLY IF IT IS SET TO A DIFFERENT AC MAINS
INPUT VOLTAGE TO THE LOCAL AC SUPPLY IN YOUR AREA
DO NOT USE DC MAINS INPUT VOLTAGES
DO NOT ATTEMPT TO CHANGE THE VOLTAGE SETTING ON THE RPS10 UNIT
The power supply is provided with an IEC type mains connector and a moulded mains plug. Check that this is
suitable for connection to the wall socket outlet.
Installation of the RPS10
Free Standing
The RPS10 can be operated as a free standing unit without requiring any special cooling arrangement, but should not be
accidentally or deliberately covered in any way. Always stand the unit on a firm flat surface well away from any soft furnishings.
Rack Mounting
The RPS10 is designed as a 19 inch rack mount unit and will occupy 3U (5.25 inches) of rack space.
An important consideration when rack-mounting the unit is the need for natural convection of air flow over the whole unit.
Good ventilation below the unit, in the floor or back of the rack, will ensure a path for continuous air flow.
Other equipment in the rack which is known not to produce a significant amount of heat should be mounted below the unit.
Equipment which also relies on good air flow within the rack (i.e. most power amplifiers and other power supplies) should be
given due consideration and some space should be provided between such units and between the RPS10 unit. Forced convection,
by means of a fan-tray, may be desirable in this situation.
Location
As with any power supply that contains a mains voltage transformer, it is preferable to provide a degree of physical isolation of the
unit from other equipment, particularly that which carries low level audio signals, to avoid any possible hum pick-up. For this
reason the unit is provided with a long (3m) output cable to enable it to be positioned away from the mixing console. For the same
reason, when rack-mounting it is preferable to avoid locating the unit adjacent to signal processing equipment.
Earthing
Finally, some consideration should be given to the earthing arrangement of the system, at the centre of which is the console and the
RPS10. The console chassis is earthed, to the mains earth, via the power supply. When rack-mounting the RPS10 care should be
taken to avoid any possible “ground loops” in the system which would introduce audible hum to otherwise clean audio signals.
Ground loops may occur where signal processing equipment, patched to the console, has its signal earth commoned to the
equipment chassis. The ground loop is formed if this chassis and the RPS10 chassis are in electrical contact through the fixing rails
they share in the rack. The RPS10 has separate audio 0V and mains earth wiring which is not connected internally.
Replacing Mains Fuse
The AC mains fuse is located on the front of the power supply unit. In the event of a mains surge or under-rated fuse value, the
mains input fuse will rupture. Switch the unit mains “on/off ” switch to the off position, remove the mains lead plug from the
mains supply socket.
Check the fuse and replace if necessary; also check that the AC mains input voltage labelling is correct for the mains supply in
your area before switching the unit on again.
TO AVOID THE RISK OF FIRE REPLACE ONLY WITH THE CORRECT VALUE FUSE, AS
INDICATED ON THE UNIT
In the event of repeated failure of the mains fuse, consult the local dealer from where the unit was purchased.
AC MAINS VOLTAGE FUSE RATING
220/230/240 VAC T 1.6A / 250V
100/110/120 VAC T 3.15A / 250V
Technical Specification
Mains Input Voltage Settings
240/220/120/110/100 VAC @ 50/60 Hz
Power consumption (max.)
250W
Mains Fuse Rating
100-120 VAC Use T3.15A/250V
220-240 VAC Use T1.6A/250V
Outputs
DC Voltage Rail Output Current
+16 VOLTS 4A Max.
-16 VOLTS 4A Max.
+48 VOLTS 200mA Max.
DC Output Plug Pin Connections
Pin 1 = -16 Volts
Pin 2 = 0V
Pin 3 = Earth
Pin 4 = +16 Volts
Pin 5 = +48 Volts
Overall Dimensions
Front Panel
19 inch 3U (482mm x 133mm)
Chassis (Maximum External)
Height: 135mm including feet (5.31 inches)
Width: 409mm (16.10 inches)
Depth: 188mm (7.40 inches)
Weight 8.5Kg (18.7 pounds)
Servicing
THIS UNIT CONTAINS NO USER SERVICEABLE PARTS. REFER ALL SERVICING TO A
QUALIFIED SERVICE ENGINEER, THROUGH THE APPROPRIATE ALLEN & HEATH DEALER
Initial operational tests on the power supply can be carried out by switching the unit ON and checking the front panel neon
indicator is illuminated. If the neon indicator is not illuminated, check the fuses are intact in the mains plug (where fitted) and the
front panel fuseholder.
THIS OPERATION SHOULD ONLY BE CARRIED OUT BY A TECHNICALLY COMPETENT
PERSONNEL
If the front panel neon indicator is illuminated but the console appears not to have any power then it may be necessary to check the
voltages present on the output connector. Refer to the Technical Specification section in this manual for the DC output voltage
levels.
Any fault condition, with the exception of simple mains fuse failure, will require access to the internal assemblies of the power
supply.
Servicing Components
ALL SERVICE AND REPAIR WORK MUST ONLY BE CARRIED BY TECHNICALLY COMPETENT
PERSONNEL
REPLACEMENT OF ANY COMPONENTS SHOULD BE UNDERTAKEN ONLY AFTER
DISCONNECTING THE MAINS SUPPLY LEAD FROM THE POWER SUPPLY UNIT
The RPS10 power supply unit requires no internal maintenance or regular servicing. If the RPS10 requires servicing or repair then
refer to the relevant service manual for the power supply information.
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