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KT-400 Ethernet Four-Door Controller Installation Manual
Relay Controlled Outputs
The KT-400 provides four relay outputs RELAY1 to RELAY4
(3 Amps, 30 VAC/VDC). The KT-400 can be expanded up to
256 controlled outputs when using expansion modules.
•
The KT-MOD-OUT16 module provides 16 outputs at a
maximum of 750 mA per output.
•
The KT-MOD-REL8 module provides 8 relay outputs at a
maximum of 3 Amps per relay.
Note:
Since the KT-400 maximum output current draw on the
SPI expansion port is 500 mA when the
12V AUX
terminals are not used, an external power supply of 12
VDC, 2 Amps is required when adding expansion
modules to the same KT-400. See
“SPI Expansion Port”
on page 23
for additional details concerning the external
power supply requirement for expansion modules.
Auxiliary Outputs
Connect auxiliary outputs to readers and local warning
devices
Auxiliary outputs are used for visual and audible signal.
They can be activated according to input conditions or
events and local alarms. Auxiliary outputs “READER DOOR
1 to 4 - LED” provide visual feedback of access operation,
and auxiliary outputs “READER DOOR 1 to 4 - BUZ” can activate audible warning devices, such as T-REX or reader
buzzer, to signal door alarms.
Tamper Protection
Install tamper switch on cabinet
A tamper switch must be installed on the unit to detect unauthorized cabinet opening.
The normally closed tamper switch must be connected to the dedicated tamper input, next to the EGND.
Note:
The tamper switch is required for a UL listed installation.
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