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KT-300 - ENGLISH INSTALLATION MANUAL
Step 8. Relay Controlled Outputs
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Connect controlled outputs to low voltage devices
(25mA max)
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Add external relays for high voltage devices (optional -
Kantech # KT-RM1)
The KT-300 provides two controlled outputs - RL1 & RL2 (open collector
to ground-current limited to 25mA). Use a KT-RM1 (optional) to switch
larger currents or voltages or to supply a dry contact.
Can be expanded up to 16 controlled outputs when using a KT-PC4216
module. This module allows a maximum of 16 outputs and a maximum of
up to 50mA per output. Since the KT-300 only supports 500mA, a power
supply module can be used to provide an additional 1A to the Combus.
Note: If you are using a KT-PC4204 in "repower" mode and other KT-
PC4204 modules that are assigned as relays 1-4 or KT-PC4216 modules
that are assigned as relays 1-16 are also connected to the same loop, do
not use relay 1 of those modules or relay 1 of the KT-300 door controller
(see page 10 for more information - Combus Repower).
Step 9. Auxiliary Outputs
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Connect auxiliary outputs to readers & 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.
Step 10. Tamper Protection
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Install tamper switch on cabinet - (optional - Kantech #
KT-300TAMP)
A tamper switch may be installed on the unit to detect unauthorized
opening of the cabinet (optional - Kantech part # KT-300TAMP).
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.
Step 11. Connecting the KT-300
RS-485 Bus
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Connect RS-485 cable to X1+, X1- and GND
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If not using VC-485: connect a 120 ohm end-of-
line resistor on the first and last KT-300 (X- & X+)
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_
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If using VC-485: connect a 120 ohm end-of-line
resistor on the last KT-300 only (X- & X+)
Controllers are linked together through their RS-485 connectors. The
maximum communication loop length with the appropriate cable is 1.2
kilometers (4,000 feet). Connecting several KT-300 controllers at a single
point is not acceptable nor are "Y" 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
baud under normal conditions.
Intermittent communication problems or erratic operation may require to
slow down the network speed to 9,600 or 19,200 baud. Varying the
Page: 8
network speed does not perceptibly change the operation speed of the
system. Usually, most installations should be set at 19,200 baud.
Without a VC-485: Connect a 120 ohm end-of-line resistor between
terminals X1- and X1+ of the first and last KT-300.
With a VC-485: Connect a 120 ohm end-of-line resistor between
terminals X1- and X1+ of the last KT-300. No need to connect on the first
KT-300 since the VC-485 contains an end-of-line resistor.
Step 12. Connecting the Master Control-
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From 0 to 30m (0 to 100 feet):
If the local master controller is located less than 30m (100 feet) from the
host computer, use the On-Board RS-232 RJ12 jack and the supplied flat
cable.
From 30m to 60m (100 to 200 feet):
Since the master controller can be located up to 60m (200 feet) from the
host computer, an extra 100 feet cable can be added to the existing cable
(Kantech part no. CAB100ext).
From 60m to 1.2 km (200 to 4,000 feet):
If the master controller is located more than 60m (200 feet), an optional
VC-485 multi-function communication interface must be used. It can also
be used when running communications cable in areas unusually high in
electrical noise.
KT-300
KT-300
KT-300
KT-300 to the
ler to the Host PC
Connect flat cable from the KT-300 to the PC
DN1315-0006 © 2000 Kantech Systems Inc.
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