English
Installation Instruction
WARNING
Before starting to install and work with this device,
please read the Safety Instructions.
When changing or installing the SPCP332/333 on
the SPC system, always ensure that the mains
supply and the battery are disconnected. Ensure
that all anti-static precautions are adhered to when
handling connectors, wires, terminals and PCBs.
Introduction to the SPCP332/333
The SPCP332/333 is a Power Supply Unit (PSU)
combined with an 8 Input / 2 Output Expander which
can be placed anywhere on the SPC X-BUS. The
expander monitors the PSU for over-current, failures
with the fuse, mains/AC, PSU and communications,
and also battery problems. The expander receives
power and data directly from the PSU via a
connector cable and interfaces with the SPC
controller via the SPC X-BUS.
Fig. 1 shows the expander (highlighted in grey)
mounted on the PSU.
See Fig. 1: SPCP330 (Expander mounted on
PSU)
1.
Mains Input Block
2.
Input Transformer
3.
Mains Power LED (see
Appendix A: LED Status
)
4.
Battery Charge State LED (see
Appendix A: LED
Status
)
5.
Fuse Fail LED (see
Appendix A: LED Status
)
6.
Current Limit LED (see
Appendix A: LED Status
)
7.
Status LED (see
Appendix A: LED Status
)
8.
Battery Selector (see
Appendix B: Link Position
):
If the battery type selected does not match the
battery, it will cause the battery to charge either
too slowly and not reach the 80 % capacity in the
required time, or too quickly, reducing the life of
the battery. The PSU shows a fault if the jumper
is not fitted.
9.
PSU 4-pin Interface: Connects to item 12, Power
and Data Connector, with a straight through cable.
10.
PSU Outputs (output 1, output 2): Each output is
fused separately with electronic 1.25 A fuses.
WARNING:
The total load current drawn from outputs 1
and 2 combined should not exceed 1.5 A
(750 mA per output). This is to ensure that
enough power is available to charge the
battery to 80% of its normal capacity within
24 hours. If more power is required on the
system, consider connecting an additional or
higher rated PSU.
11.
Battery connectors (BAT+, BAT-): 2 A fuses
12.
PSU 4-pin Interface: Connects to item 9, Power
and Data Connector, with a straight through
cable.
13.
Front tamper switch
The expander has a front tamper switch with
spring. When the lid is closed, the spring closes
the switch.
14.
Tamper by-pass [J1]
The jumper setting determines the operation of
the tamper. The tamper operation can be
overridden by fitting J1. The engineer must
ensure that J1 is removed before leaving site for
the system to comply with standards.
15.
Buzzer
The buzzer is activated in order to locate the
expander (see
SPC Configuration Manual
).
16.
Manual addressing switches
The switches allow manual setting of the ID of
each expander in the system.
17.
X-BUS status LED
The LED indicates the status of the X-BUS when
the system is in FULL ENGINEER mode as
follows:
LED status
Description
Flashes regularly
(once every 1.5
seconds approx.)
The X-BUS communications
status is OK.
Flashes quickly
(once every 0.2
seconds approx.)
Indicates the last in line
expander (excludes star and
multi-drop configuration)
18.
Outputs: The expander provides two
programmable outputs for use on the SPC
system.
19.
Inputs: The expander has 8 on-board zone inputs
that can be configured as intruder alarm zones on
the SPC system (see section
Wiring the inputs
).
20.
Auxiliary power supply (12 V): Do not use.
21.
Input Power:
0V must be connected to SPC controller 0V
(System GND). Do not use 12 V input.
22.
X-BUS Interface: The communications bus
connects expanders on the SPC system.
23.
PSU Tamper Switch and Bypass: Bypass must
be fitted if expander is mounted on top and if in a
small enclosure.
24.
Termination Jumper: This jumper, as a default, is
always fitted. However, when wiring for Star
configuration, this fitting should be removed. For
more information, see section
Wiring the X-BUS
Interface
.
25.
Back tamper terminal block.
(Fit a link across this block if tamper switch is not
used)
26.
Back tamper switch.
See section on
Back tamper switch installation
.
When connecting a battery to the PSU,
ensure that the positive and negative leads
are connected to their respective terminals on
the PSU. Ensure that all safety precautions
are adhered to when handling connectors,
wires, terminals and PCBs.
Charging the battery via PSU
During normal operation, the PSU continuously
trickle charges the battery. If the mains power fails,
the battery supplies power to the PSU outputs until
such time as the battery output voltage drops to
10.5 V DC (see section
Deep discharge protection
)
and the PSU turns itself off.
Wiring the X-BUS interface
The X-BUS interface provides connection of
expanders and keypads to the SPC controller. The
X-BUS can be wired in a number of different
configurations depending on the installation
requirements.
Note:
Maximum system cable length = number of
expanders and keypads in the system x maximum
distance for cable type.
Cable type
Distance
CQR standard alarm cable
200 m
UTP category: 5 (solid core)
400 m
Belden 9829
400 m
IYSTY 2 x 2 x 0.6 (min)
400 m
Fig. 2 shows the wiring of the X-BUS to an
expander/controller and a following
expander/controller in Spur Configuration. Terminals
3A/3B and 4A/4B are only used if using a branch
wiring technique. If using a Spur configuration, the
last expander is not wired back to the controller.
See Fig. 2: Wiring of Expanders
1
SPC controller
2
Previous expander
3
SPCP332/333
4
Next expander
Please refer to
SPC Configuration Manual
of the
connected controller for further details of wiring,
shielding, specifications and limitations.
Wiring the inputs
The expander has 8 on-board zone inputs that can
be configured as one of the following:
•
No End of Line (NEOL)
•
Single End of Line (SEOL)
•
Dual End of Line (DEOL) (Fig. 3)
•
Anti-Masking PIR (Fig. 4)
See Fig. 3: Default configuration (DEOL 4K7)
1
Input 1
2
COM
3
Tamper
4
4K7
5
Alarm
6
4K7
7
EOL
See Fig. 4: Anti-Masking PIR configuration
1
Input 2
2
COM
3
Tamper
4
1K
5
Alarm
6
2K2
7
Anti-masking
8
EOL 1K
Please refer to
SPC Installation & Configuration
Manual
for all possible resistor values and
combinations.
Anti-Masking is only reported as "Alarm" type to
ARC if area or system is set.
Wiring the outputs
The expander has 2 on-board, 1A, single-pole
changeover relays that can be assigned to any of
the SPC system outputs. These relay outputs can
switch a rated voltage of 30 V DC at 1A (non-
inductive load). Fig. 5 shows the wiring of an active
high output.
When the relay is activated, the ‘Common’ terminal
connection (COM) is switched from the ‘Normally
Closed’ terminal (NC) to the ‘Normally Open’
terminal (NO).
See Fig. 5: Output Wiring (Active High)
1
Normally Open terminal (NO)
2
Common terminal connection (COM)
3
Normally Closed terminal (NC)
X-BUS addressing
For addressing, reconfiguration, device location,
monitoring, editing of names, X-BUS communication
types and failure timer, please refer to
SPC
Configuration Manual
.
Testing Battery Voltage
The PSU performs a load test on the battery by
placing a load resistor across the battery terminals
and measuring the resulting voltage, ensuring that
the battery voltage does not drop significantly under
load conditions. The battery test is carried out every
5 seconds.
Deep discharge protection
If mains power fails to the SPCP332/333, the
battery backup is switched on to provide power. A
battery can only maintain a supply for a finite
duration when mains/AC power is cut off for a
prolonged period. The battery eventually discharges
itself.
To prevent a battery discharging beyond recovery,
the PSU disconnects the battery when the battery
output voltage reaches 10.5 V DC. When the
mains/AC is restored, the battery is recharged.
