Alternatively, the RS485 host interface (2 or 4-wire)
can be activated in the AMC2 via a jumper. There are
two sets of connection points; one for the incoming
and one for the outgoing bus system.
Quantity restrictions
• Please follow the Access Engine installation and
configuration instructions regarding the maximum
number of access controllers on one access control
system and the number of cardholders.
• Max. 4 access points/entrances
• Max. 4 ID card readers
• Max. 3 peripheral devices via internal RS485 bus
• Max. 200,000 cardholders
ID card reader connections
Wiegand interfaces
The AMC2 4W has four connections for connecting up
to four ID card readers.
ID card reader and door control element interfaces are
split into four channels, each with four connection
plugs.
The following definitions apply to the Wiegand
interface:
• 10-wire interface (incl. shield)
• Maximum cable length of 158 m (500 ft.) to ID card
reader
• 26-bit Wiegand format
• 37-bit Wiegand format
Default configuration of the Wiegand interface on the
ID card reader:
1 12V+ reader power supply
2 12V- reader power supply
3 Data line 0
4 Data line 1
5 Shield
6 Green LED
7 Red LED
8 Acoustic signal
9 Delay
10 Show card
RS485 interfaces
The AMC2 4R4 has four connections for connecting up
to eight ID card readers. The interfaces are divided to
two busses – all possible readers (up to eight) can be
connected to one interface.
RS485 interface definition:
• 2-wire interface: Using the 10-pin pluggable
connector.
• Max. length of the bus: 1200 m
• Transfer rates: 9,6 or 19,2 kBit/s
Default configuration of the Rs485 interface on the ID
card reader:
1 12V+ reader power supply
2 12V- reader power supply
3 Shield
4 Data RxTx+
5 Data RxTx-
6 Data shield (PAG)
7 Not connected
8 Not connected
9 Not connected
10 Not connected
Reader and door models
The AMC2 controls the connected reader via
predefined door models.
Door models govern in accordance with the relevant
security requirements
• Number and usage of the readers connected to the
AMC2, e.g. input and output readers, input readers
and buttons etc.
• Number and application type of the AMC inputs, e.g.
door status, output button, revolving door position,
GMA etc.
• Number and usage of AMC outputs, e.g. door opener,
mantrap contact, signal light switching etc.
The maximum number of entrances to be managed by
one AMC2 is ultimately defined by the door models
used and their requirements regarding readers and
inputs/outputs.
Notice
Therefore, when planning an access system, you
must first assign the relevant door models to all
entrances that are to be controlled. Only then can
you configure the AMC reader.
Voltage equalization - grounding
• Different voltages can be equalized using jumpers
with protective ground.
• A line (shield, equipotential bonding line) with
protective ground can only be connected in one
position.
• For further instructions, please see the operating
manual!
Contacts
Inputs
The eight analog inputs can be used as digital or
analog contacts. For analog use, resistance values can
be specified that make it possible to carry out a
further 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).
3
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