ZP3 Fire Control Panel Installation, Commissioning and Maintenance Manual
REV 11 (ISS 08/03/2010)
Page 59
ZP3AB-OP24 Transistor output board
See Figure 49. The ZP3AB-OP24 Transistor Output Board is a programmable output board with 24
separate outputs, designed to drive low-power functions, such as LED's or control relays. This
board is suitable for driving remote mimic panels. The outputs are open-collector transistor
outputs, which switch negative (0 volts) when activated. Connect the opposite side of the output
load (LED, etc) to a common positive (+24 volts) from the same power supply source as the board.
Each output is allocated a unique address, and programmed to operate from selected inputs
using the I/O-mapping function built into the panel. The ZP3AB-OP24 board connects to the ZP3
panel control bus. If allocated to the User Bus section, up to 768 addresses are available. These
outputs are freely programmable. If allocated to the System Bus section, a further 256 addresses
are available, which have pre-programmed functions.
Figure 49: ZP3AB-OP24 Transistor output board
ON
12
3
4
5
7
68
Earth
24 VDC
0V
24V+
24V common
Power
Out
Power In
24 VDC supply (22-29 VDC)
1. Supplied from ZP3 panel auxiliary output supply.
OR
2. Supplied from separate 24 VDC power supply unit.
See note below
ON
1
2
3 4
5 6 7
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Optional Flyback
Diode, 1N5819
(see ** below)
Board
Address
Switch
(see * below)
3012-02
*
Each board is fitted with a dipswitch, which is set to an address between 000 and 127.
This determines the address of each output, as specified under
System address list
on
page 84.
**
Each output can drive a maximum circuit load of 50 mA. If outputs are used to switch
inductive loads, they should be protected with a flyback diode.
The load is provided from the 24 VDC supply connected to the power input terminals. If
connected to the ZP3 panel auxiliary power supply terminals, the load is supplied from the built-in
ZP3 power supply. If connected to an external 24 VDC power supply, the external supply supplies
the load.
Note:
If externally supplied, do not common the power supplies, i.e. do not connect the 0V of the internal and
external power supplies together.
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