13
Mounting and connection instructions for readers with scrambling keypad
5.
Connection diagram
5.1
Interface
The reader is equipped with an bidirectional
interface with module bus protocol (ACS-8, IK3).
The reader can be located at a distance of up to 1200 meters. As a connection cable
Cat 5 is
recommended.
If the reader is the last node on the RS-485 module bus, there must be a distributor with a 120
terminating resistance (from A to B) installed before the reader
the jumper J1 must be bridged
between J1 and J2 (120
terminating resistance).
Refer to the description of the access control unit for additional information.
RS-485
or
³
W
W
DS1
1 - 5 reader address 0 - 31
6 - 8 not assigned
Jumper bus termination
J1-J2 bridged: 120
J2-J3 bridged: switched off
W
ST9
Alarm contact
ST1
(output - not used
here)
1+2: Electrical ground
3:
Ub 10 V - 30 V DC
4:
I2C SCL
5:
I2C SDA
ST3 (input)
1: no function
2: no function
3: B (RS-485), D*
4: A (RS-485), D
5: internally assigned
6: -Ub (ground for power
RS-485 bus)
7: +Ub (10 V - 30 V DC)
