Opti-Link
WOODWAY
Installation and Operation
Woodway Engineering Ltd
OPTINS-4.0 Rev 4
Page 3 of 9
December 2007
The Opti-Link Control System – Fig 1
The Opti-Link Control System provides a flexible and intuitive
control interface between the driver and the vehicle’s
equipment. The complete system typically comprises the
Opti-
Link Keypad
,
Keypad Interface Module
and a data-encoding
Output/Receiver Module
.
Supply characteristics:
Supply voltage: 12Vdc
Current draw: Maximum (All switches active) 6.8A Minimum
(Sleep Mode) 0.01Amps
Approvals:
VCA Approved to 72/245/EEC amendment 95/54/EC
CE Marked
PITO AES Specification 5 Issue 9
The Keypad Interface Module – Fig 2
The Keypad connects to the
Keypad Interface Module
(
Figure 2
) via a ‘keyboard’ style cable which should be
secured with a tyrap to the cable tie post after connection. The
Keypad Interface Module encodes the
Keypad Module
status
and provides power and data output which may be routed to
individual
Receiver/Output Modules
(
Figure 3
) or the
Woodway Lightbar via copper wire.
PA volume adjustment
can be made from the top of the Interface Module via a blue
single-turn variable resistor. (See figure 2). To increase the
volume turn clock wise and anti-clockwise to reduce the
volume.
The Output/Receiver Module – Fig 3
The
Output /Receiver Module
decodes the data and activates
the required outputs via a 14-way connector (note that position
14 on this connector is not used). A green ‘Data OK’ led
flashes to indicate that the data link is functioning. The switch
outputs from the Output /Receiver Module interface directly
with the low current control wiring of Woodway-supplied light
bars, sirens, and strobe power supply systems. The outputs
may be used to control high current auxiliary equipment via
automotive relays. The output circuits incorporate back emf
protection eliminating the need for diodes to be placed across
the coils of any relay used.
The output channels of the
Output Receiver module
are self
limiting to prevent damage should the load on any channel
exceed approximately 0.5 amps. In order to prevent damage to
the electronics within the receiver the overload protection
operates instantaneously when this current is exceeded.
Devices that contain capacitors will cause high in rush currents
which may cause the unit to self limit. This will be even more
evident when the engine is running due to the higher battery
voltage.
We strongly recommend that with the exception of low current switching Woodway light bars all devices to be
controlled are connected via relays as shown on page 9 of the installation information.
Keypad
ZE0175
Interface
ZE0167
Output/Receiver
ZE0169
Keyboard cable ‘tie’ post
See notes below
PA Volume Adjust Access
