American Dynamics KT-400 installation manual Relay Controlled Outputs

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 24 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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