96
en | 4-Reader Boards and 8 Input/8 Output Boards
Access Easy Controller
Ver 2.0.0 | 2006.07
Hardware Manual
Bosch Security Systems
15.2
Technical Overview of 4-reader board
15.2.1
Reader Connectors
The card contains four 6-pin terminal strips down the left side of the card. Each terminal strip
provides wiring terminations for one standard Wiegand output reader. The terminal strips are
labelled on the cards as T8, T9, T10 and T11. T8 provides the termination points for reader 1.
T9 is for reader 2. T10 is for reader 3, and T11 is for reader 4.
The pin configured for each reader connector is shown in the following table.
Two 8-pin connectors across the top of the 4-reader board provide termination points for the
door contacts and request-to-exit devices associated with the readers. The terminal strips are
identified as T6 and T7 on the 4-reader board.
For each of the four readers this card can control, there are two terminals each for connection
of a door contact and a request-to-exit device. Both circuits (contact and REX) are supervised
and should be terminated with 6.8K end-of-line resistors. Should either contact or REX device
not be used, then the termination resistor should be installed across the terminals within the
controller. Refer to the Chapter How to Install Readers and Field Devices, for detailed wiring
diagrams.
The chart that follows identifies the various termination points on the terminal strips.
Pin#
Function
1
+12 VDC
2
Ground
3
Data 0
4
Data 1
5
Green LED Control
6
Buzz Control
i
NOTICE!
Each connector is able to provide a maximum current of 150mA at 12 VDC. This is sufficient
power for most readers. Readers requiring higher current will need to have the power sup-
plied from an external power supply.
T6 terminal Strip
INO1
Request-to-exit for reader #1
GND
Request-to-exit for reader #1
IN02
Door contact for reader #1
GND
Door contact for reader #1
IN03
Request-to-exit for reader #2
GND
Request-to-exit for reader #2
IN04
Door contact for reader #2
GND
Door contact for reader #2
