Introduction
Connected to the CT-V900 controller’s expansion bus, the
2-Door Expansion Module (CA-A470-A) supports two
readers, two BCD keypads, four zone inputs, 6 outputs
and two locking devices.
Specications
CA-A470-A Specications:
Readers: connect 2 per module
Keypads: connect 2 per module
Inputs: 4 standard without ATZ, 1 tamper
Outputs: 6 (open collector)
Lock Outputs: 2 lock outputs (Form C relays)
each: 15A @ 16VDC (resistive)
AC Power: 16VAC, 40VA max.
Frequency: 50Hz/60Hz
Aux. Current: 500mA (max.)
Battery: 12VDC, 7Ah
low battery = 10.2VDC
ow battery restore = 12.2VDC
low battery cut-off = 8.5VDC
Communication: expansion bus (E-Bus), RS-485, Plug
and Play, 3 modules per CT-V900
Operating temp.: 5°C to 55°C (41°F to 133°F)
Assign Address (1 and 2)
DIP switches 1 and 2 determine the 2-Door
Expansion Module’s address in the network,
regardless of the order that they are connected
to the controller. Centaur recognizes the doors
according to the DIP switch settings as shown in
Figure 1.
Figure 1: Setting the network address
“No Card”
Access is denied to all cards and doors
are locked until communication is restored.
“2 Cards”
Access is granted only when 2 cards of
a valid format are presented to the reader.
“All Cards”
Access is granted when any card with
a valid format is presented to the reader.
“Unlock Door”
Doors are unlocked until communication
is restored.
Figure 3: Setting the A+ and B- jumpers
350mA/700mA Battery Charging Jumper
The 350mA/700mA Jumper allows you to select the
charging current for the backup battery of the 2-Door
Expansion Module. Charging the battery at 350mA takes
longer, but consumes less power. Charging the battery at
700mA takes less time, but consumes more power.
Figure 4: Setting the 350mA/700mA jumper
Programming in Centaur
Using the Centaur Access Control Software, program the
inputs, outputs, readers, and keypads connected to the 2-
Door Expansion Module. The options are explained in the
Centaur Access Control Software Reference Manual.
Centaur will identify the 2-Door Expansion Module by its
address (see DIP Switches 1 to 4) and will recognize the
devices as follows:
DIP Switches
In order for new DIP switch settings to take effect,
the 2-Door Expansion Module’s power must be
disconnected and then reconnected.
CA-A470-A Instructions
2-Door Expansion Module
31, avenue du Général Leclerc - 93500 PANTIN FRANCE
Tél. : 33 (0)1 48 91 01 02 - Fax : 33 (0)1 48 91 21 21
De-energized: no power in normal state; requires
power to activate.
Energized: power in normal state; remove power
to activate.
Lock #1 = DIP switch 3
Lock #2 = DIP switch 4
ON = Energized:
During a communication failure, the normal state of the
lock output is Energized. When Lock #1 or Lock #2
is activated, power is removed from the corresponding
lock output to unlock the door. Activation depends
on the setting of the DIP switches 5 & 6 (Access during
Communication Failure).
OFF = De-energized:
During a communication failure, the normal state of the
lock output is De-energized. When Lock #1 or Lock #2
is activated, power is applied to the corresponding lock
output to unlock the door. Activation depends on the setting
of the DIP switches 5 & 6 (Access during Communication
Failure).
Lock State during Communication Failure
DIP switches 3 and 4 determine the state
of Lock #1 and Lock #2 ONLY during a
communication failure between the 2-Door
Expansion Module and the controller
(CT-V900-A). Normally, the lock outputs
follow the Lock Control for the CT-V900-A.
Therefore, the DIP switches should have the same setting
as the Lock Control for the corresponding doors in Centaur.
Access during Communication Failure (5 and 6)
DIP switches 5 and 6 determine the access
to the protected doors during a communication
failure.
Activate Output on Communication Failure (7)
DIP switch 7 determines if OUT5 and OUT6 will
pulse during a communication failure. When DIP
switch 7 placed in the ON position, the outputs on
the device(s) connected to the OUT5 and OUT6
terminals will pulse. For example, the LED on
the reader can pulse to advise users that a
communication failure has occurred.
DIP Switch (8)
For future use.
EOL Jumper
Place the EOL jumper ON if the 2-Door Expansion Module
is at the beginning (Start Point) or at the end (End Point) of
the E-bus Network (see Figure 2). Otherwise, place the
EOL jumper OFF.
Figure 2: Setting the Jumpers
5 = off (0)
6 = off (0)
5 = on (1)
6 = off (0)
5 = off (0)
6 = on (1)
5 = on (1)
6 = on (1)
During a Communication Failure:Setting
Switch
High/Low Bias Jumpers
Place the A+ and B- jumpers on LOW only if the 2-Door
Expansion Module is at the beginning (Start Point) of the
E-bus Network. Otherwise, place the A+ and B- jumpers
on HIGH (see Figure 2 and Figure 3).
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