ALLEN & HEATH DR-switch User manual

Brand: ALLEN & HEATH

Model: DR-switch

Type: User manual

DR-switch User Guide AP4493 1

Introduction

DR-switch is an add-on unit for the Allen & Heath DR66 and DR128 digital mixers. It provides an additional 24

switch closure control inputs and 16 logic control outputs in a 1U high rack or desk mount case. Up to three

units can be connected providing up to 72 additional switch and 48 additional logic controls. These can be

custom wired by the installer to allow external equipment to control pre-determined mixer functions, or the mixer

to control external equipment. Typical applications include room wall plates for local volume control and source

selection, automatic control of room dividers, projection screens, media players, lamps and other equipment.

The inputs and outputs are opto-isolated to avoid problems with equipment interaction. Grounding the switch

inputs using simple contact closures triggers the programmed mixer function. The logic outputs are open

collector and can be wired to use the internal reference voltage or an external power supply. These typically

drive LED indicators, filament bulbs, relays and circuit logic. Wiring the interface should be carried out by

competent installation personnel. The switch and output functions are easily programmed using the WinDR

software that configures the system.

The DR66/128 communicates with the DR-switch via an RJ45 serial connection running the Allen & Heath DR-

link protocol. A standard 2 metre CAT5 STP cable is provided. However, you can use a cable up to 300

metres long letting you position the unit closer to the local switch wiring. A pass through connection lets you

network up to three units by daisy chaining them. An interface card needs to be fitted to the DR66/128 to

provide the additional serial port. Installation is a straightforward process requiring removal of the DR66/128 top

cover, fitting the internal option card provided and plugging on the cable harness supplied. Refer to Fitting

Instructions sheet AP4615.

Important Notes

To use the DR-switch the DR66/128 must be running DR

operating software version 2 from V2.11 or greater. DR-switch

will not function using earlier versions of software. Make sure

your PC is running the compatible version of WinDR. Refer to

the Help file provided with the software for details on how to

program the controls. These settings are stored as part of the

DR66/128 mixer patch memories.

The latest version of DR operating software can be downloaded

from the Allen & Heath web site: http://www.allen-heath.com

For technical assistance email [email protected]

The DR-link interface card fits into the SysNet option slot in the

DR66/128 mixer. This means that you cannot have DR-link

and SysNet installed at the same time. The SysNet protocol

can be run on the RS232 port instead if required.

This product complies with the European Electromagnetic

Compatibility directives 89/336/EEC & 92/31/EEC and the

European Low Voltage Directives 73/23/EEC & 93/68/EEC.

NOTE: Do not remove the cover of the DR-switch unit. There are no user serviceable parts inside. Any

changes or modifications to the unit not approved by Allen & Heath could void the compliance of the equipment

and therefore the users authority to operate it. Whilst we believe the information in this guide to be reliable we

do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of

further product development.

ALLEN&HEATH DR-switch for DR66/128 AP4493 issue 2

User Guide

powerlink

DR-switch

24 IN 16 OUT SWITCH CONTROLLER

G4321G5678G 1211109 G13141516G 20191817 G21222324

SWITCH INPUTS

LOGIC OUTPUTS

123

VGVGVG +-+-+-

567

+-+-+-

910

+-+-+-+-

1214

+-+-+-+-

1516 13

switch

opto

+10V

2K2

opto

+10V DC max total 500mA

open collector

+24V DC, 200mA max

+10V

FUSE: T500mA

WARNING

THIS APPARATUS MUST BE EARTHED.

ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.

100 - 240V~

47-63Hz ~ 15W MAX

CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR. Made in the UK by ALLEN&HEATH LIMITED Complies with UL6500, CSA-E65, EN60065

OUT IN

DR-LINK

next iDR

DR-switch User Guide AP4493 2

Installing the Unit

Connecting Mains Power

Connecting the DR-switch to the DR66/128

Networking DR-switch Units

You may connect up to three DR-switch units

to provide up to 72 additional switch inputs and

48 additional logic outputs.

The units are daisy chained by connecting the

DR-LINK OUT of the first unit to DR-LINK IN of

the second and so on.

Maximum distance between each unit and the

next is 300 metres. This lets you position each

DR-switch unit closer the wall plate wiring.

Ensure a good mains supply and solid

grounding to each unit.

FIT DR-LINK ADAPTER CARD

SWITCH 25-48 OUT 17-32

SWITCH 49-72 OUT 33-48

SWITCH 1-24 OUT 1-16

Before starting read the Important Safety

Instructions printed on Safety Sheet AP3345

and on the rear panel of the unit. Check that

the correct mains lead with moulded mains

plug and IEC connector has been supplied with

your unit.

With the mains supply turned off plug the IEC

lead fully into the rear panel socket. Apply

power and press the on/off switch to turn the

unit on.

FUSE: T500mA

WARNING

THIS APPARATUS MUST BE EARTHED.

ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.

100 - 240V~

47-63Hz ~ 15W MAX

CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.

The DR-switch can be rack mounted or free

standing. There are no user controls on the

front panel. Allow a minimum of 75mm

clearance behind the unit for the connectors

and cables. Ensure adequate ventilation to the

side of and behind the unit.

It is shipped with its rack ears fitted and its feet

removed ready to be mounted in a standard

19” equipment rack. 1U rack space is

required.

For desk mount operation remove the two rack

ears using a Torx (star head) T10 screwdriver.

Fit the four plastic feet provided by pressing

them into the underside holes.

The DR66/128 main unit communicates with

the DR-switch using the Allen & Heath DR-

LINK serial logic connection. This requires a

standard RJ45 CAT5 STP (shielded twisted

pair) cable. To ensure reliable performance

the cable shield must be attached to the metal

shell of the plugs. Do not use a UTP

(unshielded) cable.

A 2 metre CAT5 cable is provided with the unit.

If you need to connect a longer cable make

sure it is correctly wired to the CAT5 STP

standard. Maximum cable length is 300

metres. Plug one end of the cable into the DR-

LINK adapter card fitted to the DR66/128. Plug

the other end into the DR-switch DR-LINK IN

socket.

The front panel link LED indicator lights when

communication is established with the

connected DR66/128. The unit features logic

to automatically detect when the system is

powered and operating correctly.

DR-LINK ADAPTER CARD FITTED

DR-LINK IN

RJ45 CAT5 STP CABLE

300m MAX

powerlink

DR-switch User Guide AP4493 3

Important: Using the Switch Inputs and Logic Outputs

The DR-switch provides contact closure switch inputs and open-collector logic outputs. How these are wired to

external equipment is the responsibility of the installer. Specification details are provided here for the DR-

switch inputs and outputs. It is important that the installer is suitably qualified and familiar with external control

circuits to be able to work within the capabilities of the unit. Allen & Heath do not assume responsibility for any

damage done to the unit due to incorrect or faulty connection to external equipment.

Planning and Configuring the System

Before starting make sure you have planned how the system is to work. Allocate the switch inputs and logic

outputs and keep a log of their function. The function of each input and output is configured using the Allen &

Heath WinDR software. Refer to the help file within the program for instructions.

Connectors and Grounding

Using the Switch Inputs

Pluggable Phoenix type screw terminal

connectors are used for connecting the

external switches and logic to the DR-switch.

Mating plugs are provided with the unit.

Make sure the wires ends are carefully stripped

and inserted into the terminals. Tighten the

screws using the correct slotted screwdriver.

To ensure interference-free operation use

shielded cable. Connect the shields to the

chassis ground screw terminals provided next

to each connector. Fit the screws with the

shake proof washers provided.

For operator safety make sure that

wall plates and other control surfaces made

from metal are correctly bonded to ground

(earth).

Strap the metal plate to the local ground at the

wall box. For ground isolation between the

wall plate and equipment rack connect the

cable shield at the DR-switch end only.

If a local ground is not available then use the

cable shield to connect the plate to the chassis

of the DR-switch unit as shown. This is not

necessary if the wall plate is made of non-

conductive material such as plastic which

insulates it from the operator.

METAL WALLPLATE

CHASSIS EARTH

METAL WALLPLATE

LOCAL EARTH BOND

SWITCH

43215678GG

12 11 10 913141516GG

20 19 18 1721222324GG

INPUTS

2K2

+10V

OPTO

INTERNAL DR-switch CIRCUIT

(1 OF 8 SHOWN)

The input is opto-coupled to isolate the DR-

switch from the connected equipment. It is

switched by linking its connector pin to the

ground (‘G’) pin. Use a contact closure such

as a momentary press switch to do this.

The input pin is fed from the internal +10V

reference supply through a 2k2 ohm resistor.

Around 5mA maximum current flows when

connected to ground. Combined switch and

cable resistance should not exceed 1k ohm for

the switch to activate.

Each 10way connector provides 8 switch

inputs. Either pin 1 or pin 10 ‘G’ may be used

as the common switch ground. One cable can

feed this ground to a bank of switches. Two

are shown in the diagram here. Do not use the

chassis ground screw which is for cable

shielding and safety earthing only.

For reliable operation we recommend the use

of heavy duty sealed switches.

DR-switch User Guide AP4493 4

Using the Logic Outputs

System Block Diagram and Specification

+10V

G 20191817 G21222324

V+-G13+-14+-15+-16

GROUND

OUT INDR-LINK

DC REFERENCE

VOLTAGE

INTERNAL POWER

9-16 1-8

9-12 5-8 1-4

+10V

2K2

CONTROL

CHAIN

OPTO-ISOLATED SWITCH INPUTS 1-24

OPTO-ISOLATED LOGIC OUTPUTS 1-16

OPEN COLLECTOR

Connectors:

Pluggable Phoenix 10way terminal

Switch Inputs:

Opto-isolated via 2k2 from +10V

Switch closure connects pin to ground (5mA)

Switch cable resistance up to 1k ohm

Logic Outputs:

Opto-isolated open-collector

Floating collector (+) and emitter (-) pins

Internal 10V DC source (500mA total max)

External DC source (+24V 200mA each max)

Communication:

DR-link serial port using RJ45 connectors

Uses Allen & Heath DR-link protocol

2m CAT5 STP cable supplied, maximum 300m

Requires adapter card fitted to DR SysNet port

Daisy chain up to 3 units

Configuration:

Configure with WinDR operating software

Requires V2.11 or greater

Separately configure switches and output

Latched, press, release, time of day action

System:

DR128 8 switch

DR66 12 switch, 4 logic

DR-switch adds 24 switch, 16 logic

Power Supply:

Universal mains input 100-240V.AC

Independent 10V supply for connections

500mA total available

Dimensions:

Rack 482.5 x 143 x 44 mm (1U)

Desk 442.5 x 141 x 48 mm

The output is opto-coupled to isolate the DR-

switch from the connected equipment. It

provides an open collector output with floating

collector (+pin) and emitter (-pin).

Each 10way connector provides 4 open

collector pairs as well as an internal +10V DC

supply and ground pins. Do not use the

chassis ground screw which is for cable

shielding and safety earthing only.

The output may be used in many ways to

satisfy a wide range of interfacing applications.

It is important that the installer has a good

working knowledge of open collector and

interfacing circuits. Incorrect application may

result in damage to these outputs.

The internal +10V supply may be used as the

power source for low current applications such

as turning on LEDs, lamps and small relays.

One cable can feed the common supply or

ground to a bank of outputs.

Maximum current drawn from the

+10V supply for all outputs combined must not

exceed 500mA. Care must be taken in

component choice to ensure each operates

within its specified capability.

For higher current or voltage applications an

external DC power supply may be used. This

also provides total isolation between the DR-

switch and external equipment.

Maximum external supply voltage

must not exceed +24V DC. Maximum current

sink through any open collector output must

not exceed 200mA.

A few examples are shown in the diagram

here. For further advice contact Allen & Heath

technical support.

V+-G+-+21

LED INDICATORS

+10V DC

SUITABLE RESISTORS

+-3

V+-G+-+65+-7

+-4

+-8

V+-G+-+10 9+-11+-12

V+-G+-+14 13+-15+-16

+10V

OPEN COLLECTOR

OPTO

INTERNAL DR-switch CIRCUIT

(1 OF 4 SHOWN)

LOW CURRENT 12V BULBS

LOW VOLTAGE RELAY

TO EQUIPMENT

SUITABLE RESISTOR

+10V DC

V-G+

CURRENT SINK

+V (+24V DC max)

GROUND

EXTERNAL POWER SUPPLY

DEVICE

200mA max

ALLEN & HEATH DR-switch User manual

ALLEN & HEATH DR-switch User manual

ALLEN & HEATH DR-switch User manual

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