Compex Systems AP4530 - Manual (Page 36)

36 IDR-8 User Guide
Using the logic outputs
Each output is opto-
coupled to isolate the iDR-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 grounding 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 iDR-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.
Remote controllers
The iDR-switch is designed to be
used with a wide range of remote control devices including
custom wall plates and operator panels. Check out the Allen &
Heath range of PL wall plates and remote controllers. This
range is continually developing and it is likely that some may
be suitable for your application.
At the time of print of this user guide the PL-2 wall plate is
available for use with the iDR-switch. It has 4 switches and 4
3-colour LEDs which can be hard wired to the unit. It can be
fitted into a UK or US standard single wall box. For further
details visit the Allen & Heath web site.
V + - G + - + 2 1
LED INDICATORS
+10V DC
SUITABLE RESISTORS
+ - 3
V + - G + - + 6 5 + - 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
+10V DC
V - G +
V - G +
- +
V - G +
CURRENT SINK
+V (+24V DC max)
GROUND
EXTERNAL POWER SUPPLY
DEVICE
200mA max
link power
24 IN 16 OUT SWITCH CONTROLLER
iDR-switch
iDR-switch
Switch closures
Open-collector logic
Relays
Lamps