DN1315-1007
9
KT-300 Door Controller Installation Manual
Auxiliary Outputs
Connect auxiliary outputs to readers and local warning devices.
Auxiliary outputs are used for visual and audible signals. They can be activated according to schedules, input conditions or
events and local alarms. Auxiliary outputs “OUT DOOR 1 & 2 LED” provide visual feedback of access operation, and auxiliary
outputs “OUT DOOR 1 & 2 BUZ” can activate audible warning devices, such as T-REX, to signal door alarms.
Tamper Protection
Install tamper switch on cabinet (Kantech #KT-TAMP).
A tamper switch must be installed on the unit to detect unauthorized cabinet opening.
The normally closed tamper switch is connected to an input (choose an unused input (5 to 8) as tamper input or any other
unused inputs on the KT-PC4108 module (if used)).
NOTE:
The tamper switch is required for a UL listed installation.
Connecting the KT-300
Connecting to the RS-485 Bus
Connect RS-485 cable to X1+, X1- and GND.
Controllers are linked together through their RS-485 connectors. The maximum communication loop length is 1.2 kilometers
(4,000 feet) using appropriate cabling. Connecting several KT-300 controllers at a single point is not acceptable nor are splitters
or “spider web networks.”
The RS-485 communication loop should be wired with Ethernet Category 3 double twisted pair network cable (see cable
specifications Belden 1227A, or equivalent). The RS-485 loop can operate from 1,200 to 115,200 bauds under normal
conditions.
Intermittent communication problems or erratic operation may require network speed drops to 9,600 or 19,200 Bauds. Varying
the network speed does not perceptibly change the operation speed of the system. Usually, most installations should be set to
19,200 Bauds.
NOTE:
To learn more about USB-485 wiring, please refer to the
USB-485 Installation Sheet
, DN1482.
