KT-300 - ENGLISH INSTALLATION MANUAL - STEP BY STEP INSTALLATION
DN1236-9911 © 1999 KANTECH SYSTEMS INC.PAGE - 10 -
Combus Specifications
The combus provides 500mA at 12 volts (13.85VDC). The recom-
mended cable is 22 AWG (Kantech part number: CBL-ZN). Each loop
(moduleto KT-300) cannot exceed 300 m (1000`) and the total maximum
cable length of all connected loops cannot exceed 1200 m (4000`).
For example:
Only four wireruns at 1000` from the KT-300
Only eight wireruns at 500` from the KT-300
Only ten (10) wireruns at 400` from the KT-300
Shielded wire should only be used in areas that present excessive RF
noise or electromagnetic interference. Modules can be straight run,
connected in a daisy chain or T-tapped anywhere on the combus.
INSTALLATION
1. Remove power from the KT-300 controller;
2. For the KT-PC4108, KT-PC4216 and KT-PC4204 modules
place a jumper between tamper + and tamper - (COM) of the module;
3. Connect the module to the combus, power the KT-300;
4. Run EntraPass or WinPass;
5. Remove the Tamper jumper of each module, a serial number will
appear on the screen (one for each module);
6. To register the module, enter the serial number of the module in the
proper field of the software.
For KT-LCD4501 keypad module, connect it to the combus, and press
the # key on the keypad and theserialnumber will appear on the screen.
NOTE: Dont forget to put back the tamper jumper or connect a tamper
switch to it.
Combus Repower (If required)
Depending on how many modules are connected to the combus and how
far they are from the KT-300 you may need to repower the combus.
Thecombus needs to be repowered if the voltage between theblackand
red wires of the last module of each loop drops under 12.5 volts. This
voltage drops if modules are taking too much current (500mA maximum
for the combus).
Youll have an event Combus module defect and you wont be able to
communicate with the expansion modules if the voltage is under 12.5
volts. With a multimeter you should verify this voltage and determine if
you need to install a KT-PC4204 in repower mode. With this configura-
tion youll have an additional 1 amp of current on the combus. The KT-
PC4204 is generally installed at the beginning of the loop.
The jumper 1 J1 on the KT-PC4204 must be moved to the combus relay
position.
NOTE: Do not use any power supply other than the KT-PC4204 to
repower the combus. In the event of a power surge or transient, a module
may lock up and cease to communicate with the controller. If the KT-300
loses communication with the module, it will initiate a module reset and
will power down the combus for five seconds in attempt to reset the
problem module. After five seconds, the controller will reapply power to
the combus and the problem module should begin to operate as intended.
Introduction to Modules
The combus terminals on the KT-300 controller are used to connect
expansion modules to add more inputs, outputs, relays and LCD key-
pads. The four combus terminals of the main panel must be connected to
the four combus terminals or wires of all modules.
There are 4 expansion modules that can be connected to KT-300s
combus (more specifications of each of these modules can be found at the
end of this document).
1) KT-PC4108 - (8 - Zone input expansion module)
2) KT-PC4204 - (4 Relay/Power Supply Expansion Module)
3) KT-PC4216 - (16 - Zone output expansion module)
4) KT-LCD4501 - (Kantech LCD digital keypad module)
Cabinet for Housing Modules
Kantech part no.: KT-4051CAB
Measurements: 16,8" H x 10,4" W x 4,1" D
Color: Black
Cabinet will hold either:
a) One (1) KT-PC4204 power supply/relay
module with batteries and one (1) KT-
PC4108/KT-PC4216.
b) Three (3) KT-PC4216/KT-PC4108 modules
