2 | AMC2 4W-EXT - Wiegand Extension Board
The AMC2 4W-EXT is connected to the AMC2 4W using the
RS-485 extension interface. This interface will also be used
to connect further extension modules.
Installation/Configuration Notes
The number of controllers in one system is limited to 200.
The using of AMC2 4W-EXT modules has no influence on this
limit, because it is an extension to an AMC2 4W and not a
controller.
Using Wiegand interfaces, up to eight peripheral devices
can be connected to each AMC2 4W. The interfaces are
point-to-point connections, meaning that only one reader
can be connected to one interface.
Power supply
An external power supply (10 to 30 V DC) for the AMC2 is
connected to the first (positive) and third pin (negative).
When using an uninterruptible power supply (UPS), the
relevant UPS output relay is connected to the pins
•
4 and 7 for alternating current (AC)
•
5 and 7 for the battery
•
6 and 7 for direct current (DC)
Otherwise, these pins will short-circuit.
Voltage equalization - grounding
•
Different grounds can be balanced via jumpers with
protective ground.
•
A line (shielding, potential equalization) with protective
ground must only be connected in one place.
•
For further instructions, please see the operating
manual.
Wiegand interface
The AMC2 4W-EXT has four interfaces to connect up to four
readers. The following definitions apply to the interface:
•
10 wire interface with shield
•
Max. cable length: 158 m (172.8 yd)
•
26 bit wiegand format
•
37 bit wiegand format
Default configuration:
1 = Reader Supply – 12V+
2 = Reader Supply – 0V
3 = Data 0
4 = Data 1
5 = Shield
6 = green LED
7 = red LED
8 = Beeper
9 = Hold
10 = Card Present
Contacts
Inputs
The analog inputs can be used as digital or analog contacts.
For analog use, resistance values can be specified to check
for cable breaks and short-circuits.
Relay outputs
The relay outputs offer the following functions:
•
The outputs can operate with potential free contacts for
external power supply (dry mode).
•
The outputs can operate using the internal voltage of
power supply (wet mode).
•
Only ohm resistive loads can be connected to the relay.
•
Inductive loads must be bypassed via recovery diodes.
These diodes (1N4004) are enclosed.
General instructions
•
All access equipment should be mounted within a
"secured area".
•
Detailed connection conditions are specified in the
operating manual!
•
After purchase, primary AC power must be carried out
by a licensed electrician.
Technical Specifications
Hardware
4 Wiegand reader interfaces
8 relay outputs - with ohm load:
- max. switching voltage: 30 V DC
- max. switching current: 1,25 A
8 analog inputs
Tamper switch
Temperature
0°C to +45°C (32° F to 113° F)
Power supply - 10 or 30 V DC, max. 60 VA
Available for external devices: 55 VA
- or via the AMC2
Protection
class
IP 30
Housing
Base: PPO (UL 94 V-0)
Upper: Polycarbonate (UL 94 V-0)
Color
White
Dimensions
WxHxD: 232 x 90 x 46 mm (9.13 x 3.54 x 1.81 in.)
Weight
Approx. 0.4 kg (0.88 lb)
Type
Rail mounting
