SoundCraft CPS2000 User Manual

SOUNDCRAFT CPS2000

Console Power Supply

User and Technical Manual

For your own safety and to avoid invalidation of the warranty all text marked with these Warning Symbols should be read carefully.

IMPORTANT: please read this manual carefully before connecting your Soundcraft console power supply to the mains for the first time.

Part No. ZM0198-05

Soundcraft is a trading division of Harman International Industries Ltd.

Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. Soundcraft shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual, or through any mis-operation or fault in hardware contained in the product.

No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written permission of Soundcraft.

It is recommended that all maintenance and service on the product should be carried out by Soundcraft or its authorised agents. Soundcraft cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel.

Harman International Industries Ltd. Cranborne House Cranborne Road Potters Bar Herts. EN6 3JN England

Tel: 01707 665000 Fax: 01707 660482

www.soundcraft.com

Contents

Introduction 1

Mains Voltage Selection 2

Operating Voltage Range 4

Replacing Mains Fuse 4

Warranty 5

Recommendations for Installation 7

PSU Linking 10

Dimensions 11

Technical Specification 13

Circuit Description 15

Parts List 25

Fan Control 35

Technical Drawings 39

Introduction

Introduction 1

IMPORTANT SAFETY INSTRUCTIONS

· Read these instructions.

· Keep these instructions.

· Heed all warnings.

· Follow all instructions.

· Do not use this apparatus near water.

· Clean only with a dry cloth.

· Do not block any ventilation openings. Ventilation should not be impeded by covering the ventilation

openings with items such as newspapers, table cloths, curtains etc. Install in accordance with the manufacturer’s instructions.

· Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

· Do not defeat the safety purpose of a polarised or grounding type plug. A polarised plug has two blades with

one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet

· Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles and

the point where they exit from the apparatus.

· Only use attachments/accessories specified by the manufacturer.

· Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus.

When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

· Unplug this apparatus during lightning storms or when unused for long periods of time.

· Refer all servicing to qualified service personnel. It is recommended that all maintenance and service on the

product should be carried out by Soundcraft or its authorised agents. Soundcraft cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

· No naked flame sources, such as lighted candles, should be placed on the apparatus.

· WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Do not expose the apparatus to dripping or splashing and do not place objects filled with liquids, such as vases, on the apparatus.

· Terminals marked with the lightning symbol are hazardous live and the external wiring connected to these

terminals requires installation by an "instructed person" or the use of ready made leads or cords.

· THIS APPARATUS MUST BE EARTHED. Under no circumstances should the safety earth be

disconnected from the mains lead.

· The mains supply disconnect device is the mains plug. It must remain accessible so as to be readily operable

when the apparatus is in use.

· If any part of the mains cord set is damaged, the complete cord set should be replaced. The following

information is for reference only.

· The wires in the mains lead are coloured in accordance with the following code:

· Earth (Ground):Green and Yellow (US - Green/Yellow)

· Neutral:Blue (US - White)

· Live (Hot):Brown (US - Black)

· As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the

terminals in your plug, proceed as follows:

· The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked

with the letter E or by the earth symbol

· The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the

letter N

· The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the

letter L

· Ensure that these colour codes are followed carefully in the event of the plug being changed

· This unit is capable of operating over a range of mains voltages as marked on the rear panel. It is important

to ensure that the correct mains fuse is fitted before switching on the unit.

2 Introduction

Introduction

WARNING: THIS APPARATUS MUST BE EARTHED

The CPS2000 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. Soundcraft mixing consoles employ a number of dc voltage supply levels in their operation and these are all provided at the output of each supply unit.

In regulating these voltages there is considerable heat generated, the dissipation of which is achieved through a substantial heat sink on each side of the unit. Two fans are incorporated which draw air over the heatsinks to provide adequate heat dissipation for the regulators and reduce the outer case temperature.

The CPS2000 is designed for installation in a 19" rack unit, occupying 4U of rack height. Refer to the section "RECOMMENDATIONS FOR INSTALLATION" on Page 7.

LEDs are provided on the front panel to show the operation of the regulating circuits, and a digital voltmeter monitors the mains supply voltage.

The CPS2000 may be linked to a second CPS2000 to provide automatic power backup in the event of one of the units failing.

MAINS VOLTAGE SELECTION.

Special attention should be paid to the following information:

Do not change the voltage setting without first turning the unit off and unplugging the mains lead. Ensure that the cover plate over the mains voltage selection switches is replaced after correct voltage selection has been made and that the cover plate is positioned to show the correct mains voltage.

This unit is capable of operating over a wide range of mains voltages by means of a comprehensive set of selectable voltage settings. It is important to ensure that the correct voltage setting has been selected for the level of local mains voltage supply, for safe, uninterrupted operation of the unit.

There are two mains voltage selection switches behind a cover plate on the front of the unit. Voltage selection is achieved by moving the switches using a screwdriver blade, into the correct positions, as shown by the symbols marked on the front panel. In this way the unit is set up for operation at one of the following ranges of mains supply:

NOMINAL VOLTAGE OPERATING VOLTAGE RANGE

Vrms AC Vrms AC

230 195-253 200 170-220 115 98-126 100 85-110

Introduction 3

Mains Voltage Selector Positions

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

PIN 1, 2, 3, 4 +17V 16A

9, 10, 11, 12 -17V 16A

13 +48V

18 +8V

NOT USED

5, 6, 7, 8 +0V

16, 17 0V

14, 15 CHAS SIS GROUND

( BOTH DC CONNECTORS HAVE

IDENTICAL

PINOUT )

DC POWER OUT

TO CONSOLE

DC POWER IN

FROM STANDBY SUPPLY

OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

230V

200V

Front and Rear Panel Views

ACCESS TO MAINS VOLTAGE SELECTION SWITCHES

48V

WARNING:

ANY VENTILATION SLOTS, AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

17V

CLEAN FANFILTERS REGULARLY

DO NOT COVER

UNDER COVER PLATE. WARNING: DISPLAY MAINS VOLTAGE SETTING IN SIDE WINDOW WHEN REFITTING COVER PLATE.

ENSURE CORRECT MAINS VOLTAGE SETTING AND CORRECT FUSE BEFORE CONNECTING MAINS SUPPLY. DO NOT SWITCH MAINS VOLTAGE SETTINGS WHILE MAINS SUPPLY IS CONNECTED.

230V

MAINS VOLTAGESELECTION

200V

CONSOLE POWER SUPPLY

115V

100V

MAINS VOLTAGE

115V

DOTS LIGHT WHEN MAINS LOW

POWER

100V

CPS

OFF

000

MAINS FUSE:

100V/230V USE T10.0A/250V

CAUTION:

TO REDUCE THE RISK OF

FIRE, REPLACE WITH SAME TYPE FUSE ONLY.

ATTENTION:

AFIN DE REDUIRE LE RISQUE DE FEU, REMPLACER SEULEMENT AVEC FUSIBLE DE MEME TYPE.

HIGH TEMP

17V

NO USER SERVICEABLE PARTS INSIDE

DC POWER OUT

TO CONSOLE

PIN 1, 2, 3, 4 +17V 16A

5, 6, 7, 8 +0V

9, 10, 11, 12 -17V 16A

13 +48V 14, 15 CHAS SIS GROUND 16, 17 0V

18 +8V

NOT USED

( BOTH DC CONNECTORS HAVE

IDENTICAL PINOUT )

1.25A

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

0.5A

DC POWER IN

FROM STANDBY SUPPLY

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

4 Introduction

OPERATING VOLTAGE RANGE

It is very important to use the correct mains voltage selection. A wide operating range of mains voltages is provided to enable the unit to function down to only 85Vrms on the mains supply. This facility is incorporated to overcome the problems that some power supplies have with internal regulation when operating from a poorly regulated mains supply.

Do not operate the PSU with a consistently high (above nominal) reading on the mains meter. Operation with the mains higher than +10% may cause serious damage

The mains meter is essentially a peak-reading device, as it is the peak value of the mains waveform which is the most important factor in providing the correct mains voltage to the power supply. For this reason, and because with long power cables it is common for the mains waveform to become distorted, the indication of the meter may not agree with readings taken with the usual types of quasi-RMS reading testmeter.

Note that the meter measures the voltage actually available at the PSU, and therefore will indicate any voltage drop on mains supply wiring.

REPLACING MAINS FUSE.

In the event of incorrect switching of the mains voltage selectors, a mains power surge or underrated fuse value, the mains fuse in the front panel will blow and the CPS2000 will not function. Switch the ON/OFF switch to the OFF position. Check the fuse and replace if necessary; also check that the voltage selection is correct for the mains supply level before switching the unit ON again.

To avoid 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 Soundcraft dealer from where the unit was purchased.

This unit contains no user serviceable parts. Refer all servicing to a qualified service engineer, through the appropriate Soundcraft dealer.

Introduction 5

Warranty

1 Soundcraft is a trading division of Harman International Industries Ltd.

End User means the person who first puts the equipment into regular operation.

Dealer means the person other than Soundcraft (if any) from whom the End User

purchased the Equipment, provided such a person is authorised for this purpose by Soundcraft or its accredited Distributor.

Equipment means the equipment supplied with this manual.

2 If within the period of three years from the date of delivery of the Equipment to the End User it shall prove defective by reason only of faulty materials and/or workmanship to such an extent that the effectiveness and/or usability thereof is materially affected the Equipment or the defective component should be returned to the Dealer or to Soundcraft and subject to the following conditions the Dealer or Soundcraft will repair or replace the defective components. Any components replaced will become the property of Soundcraft.

3 Any Equipment or component returned will be at the risk of the End User whilst in transit (both to and from the Dealer or Soundcraft) and postage must be prepaid.

4 This warranty shall only be available if:

a) the Equipment has been properly installed in accordance with instructions

contained in Soundcraft’s manual; and

b) the End User has notified Soundcraft or the Dealer within 14 days of the defect

appearing; and

c) no persons other than authorised representatives of Soundcraft or the Dealer have effected any replacement of parts maintenance adjustments or repairs to the Equipment; and

d) the End User has used the Equipment only for such purposes as Soundcraft recommends, with only such operating supplies as meet Soundcraft’s specifications and otherwise in all respects in accordance Soundcraft’s recommendations.

5 Defects arising as a result of the following are not covered by this Warranty: faulty or negligent handling, chemical or electro-chemical or electrical influences, accidental damage, Acts of God, neglect, deficiency in electrical power, air-conditioning or humidity control.

6. The benefit of this Warranty may not be assigned by the End User.

7. End Users who are consumers should note their rights under this Warranty are in addition to and do not affect any other rights to which they may be entitled against the seller of the Equipment.

6 Introduction

Recommendations for

Installation of the CPS 2000

Installation 7

Recommendations for Installation

The CPS2000 power supply is provided with front panel fixing holes for 19" rack-mounting and will occupy 4U of rack space. Rear support should be provided when fitted in a 19" rack.

The CPS2000 is a heavy unit (30kg,) and should be regarded as a two-man lift. Take suitable precautions when lifting

As with any power supply that contains a large mains-voltage transformer, it is preferable to provide a degree of physical isolation of the unit from other electronic equipment, particularly that which carries low level audio signals, to avoid any possible hum pick-up. For this reason the unit is used with a long (6.5 metres) 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.

It should be noted that if a complete rack containing a CPS2000 unit is to be operated from a different mains supply level, then the unit should be withdrawn from the rack in order to reselect the mains voltage setting, at the same time as resetting any other equipment.

The other important consideration when rack-mounting the unit is the need for natural convection of air over the case and an unrestricted air flow through the unit. Note that air is drawn in at the front of the unit and expelled through the rear panel.

Good ventilation BELOW the unit, in the floor or back of the rack, and similarly ABOVE the unit, at the top 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 that also relies on good air flow within the rack (ie. most power amplifiers and other power supplies) should be given due consideration and some space should be provided between such units and between these and the CPS2000 unit. Forced convection, by means of a fan-tray, may be desirable in this situation.

The CPS2000 will operate as a free-standing unit without requiring any special cooling arrangement, but should not be allowed to be accidentally or deliberately covered over in any way.

Do not operate the unit with the top cover removed as this exposes hazardous voltages.

The filters on the cooling fans must be inspected regularly and cleaned if necessary to maintain good airflow through the unit. This will be particularly important if the unit is used in a dusty environment.

8 Installation

Finally, some consideration should be given to the earthing arrangement of the system at the centre of which are the console and the CPS2000 (and any other Soundcraft power supply units). The console chassis is earthed, through the mains earth, via the power supply. When rack-mounting the CPS2000(and any other Soundcraft power supply units) 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 power supply chassis are in electrical contact through the fixing rails they share in the rack. To avoid this situation, standard isolating washers may be employed when fixing the power supply (or supplies) or any other unit into the rack.

W A R N I N G : THIS APPARATUS MUST BE EARTHED. Under no circumstances should the mains earth be disconnected from the CPS2000 power supply unit.

GENERAL

As with all electrical/electronic equipment care should be taken when handling this unit. Avoid general mishandling and do not drop. Avoid storage and operation in dusty locations and do not expose to corrosive atmospheres.

To avoid risk of fire do not expose this unit to rain or moisture.

Retain all packaging for transportation in the event of the unit requiring servicing. Retain this manual safely, along with all other relevant documents.

For touring/mobile transportation it is advisable to install the CPS2000 in a flight case to provide mechanical protection. Refer to your Soundcraft dealer for a suitable case.

Where the CPS2000 is enclosed in a touring case, provision must be made for adequate ventilation to the rear of the unit to ensure unrestricted supply of air for the cooling fan.

Use only the 16 Amp mains lead supplied, no other type is to be used.

Use only the DC output lead supplied, no other type is to be used.

Installation 9

PSU Linking

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

PIN 1, 2, 3, 4 +17V 16A

9, 10, 11, 12 -17V 16A

13 +48V

18 +8V

NOT USED

5, 6, 7, 8 +0V

16, 17 0V

14, 15 CHASSIS GROUND

( BOTH DC CONNECTORS HAVE

IDENTICAL

PINOUT )

DC POWER OUT

TO CONSOLE

DC POWER IN

FROM STANDBY SUPPLY

OF FIRE OR ELECTRIC SHOCK

TO RAIN OR MOISTURE

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

PIN 1, 2, 3, 4 +17V 16A

9, 10, 11, 12 -17V 16A

13 +48V

18 +8V

NOT USED

5, 6, 7, 8 +0V

16, 17 0V

14, 15 CHASSIS GROUND

( BOTH DC CONNECTORS HAVE

IDENTICAL

PINOUT )

DC POWER OUT

TO CONSOLE

DC POWER IN

FROM STANDBY SUPPLY

OF FIRE OR ELECTRIC SHOCK

TO RAIN OR MOISTURE

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

Link the second PSU to the first as shown in the following diagram.

Note that the linking cable is included when a spare CPS2000 is ordered.

To Console

NO USER SERVICEABLE PARTS INSIDE

DC POWER OUT

TO CONSOLE

PIN 1, 2, 3, 4 +17V 16A

5, 6, 7, 8 +0V

9, 10, 11, 12 -17V 16A

14, 15 CHASSIS GROUND 16, 17 0V

( B OTH DC CONNECTORS HAVE

IDENTICAL PINOUT )

DC POWER OUT

TO CONSOLE

PIN 1, 2, 3, 4 +17V 16A

5, 6, 7, 8 +0V

9, 10, 11, 12 -17V 16A

14, 15 CHASSIS GROUND 16, 17 0V

( B OTH DC CONNECTORS HAVE

IDENTICAL PINOUT )

13 +48V

18 +8V 19

13 +48V

18 +8V 19

NOT USED

0.5A

1.25A

0.5A

1.25A

WARNING:

OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

WARNING:

OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE

DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT

TO REDUCE THE RISK

DC POWER IN

FROM STANDBY SUPPLY

DC POWER IN

FROM STANDBY SUPPLY

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE

- NE PAS OUVRIR

NO USER SERVICEABLE PARTS INSIDE

10 Installation

Dimensions

All dimensions in millimeters

Installation 11

12 Installation

+ 36 hidden pages