ZP3 Fire Control Panel Installation, Commissioning and Maintenance Manual
Page 58
REV 11 (ISS 08/03/2010)
ZP3AB-MA8 Monitored output board
See Figure 48. The ZP3AB-MA8 Monitored Output Board is a programmable output board with 8
separate outputs, designed to drive fire alarm sounder or control outputs. Outputs monitor the
circuit field wiring for open-circuit and short-circuit faults, and report to the panel should a fault
occur. The outputs operate on a reverse polarity basis, being set to one polarity for normal and
reversing polarity for alarm. Outputs must be polarized with a polarizing diode (these are often
internally fitted on sounders). The outputs are wired in 2-wire class-B single direction format. They
must be daisy-chained from point-to-point, without spurs. Circuits must be terminated with a 2K2
ohm "end-of-line" resistor at the last device on the circuit.
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-MA8 board connects to the
ZP3panel 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 48: ZP3AB-MA8 Monitored output board
ON
12
3
4
5
7
68
ON
0V
Earth
24V
O/P 1
O/P 2
O/P 3
O/P 4
O/P 5
O/P 6
O/P 7
O/P 8
Output Fuses
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
Power In
Internally
Connected
Board
Address
Switch
(see * below)
(same as per output 1)
Sc
re
en (unu
se
d)
+ -
EOL
Resistor
3011-02
*
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 provides 24 VDC in alarm, and can drive a maximum circuit load of 1 A. 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.
