Configuring the KT-400 expansion modules

The KT-400 support expansion modules through its SPI expansion port. The SPI port is a 6-conductor cable bus to which several expansion modules are daisy-chained to add inputs, outputs, and relays.

Note: The KT-400 SPI port maximum current draw is 500 mA, when the 12V AUX terminals are not used. External power supply (12 VDC, 2 Amps) for the expansion module is required when the total current draw exceeds 500mA on the SPI Port. For additional hardware details, refer to the KT-400 Ethernet Four-Door Controller Installation Guide, DN2003.

Thare are three expansion module types available:

  • KT-MOD-INP16: The KT-MOD-INP16 is an input module that adds 240 zones to the KT-400 controller. Up to 15 input modules (16 input modules if used for elevator configuration) can be connected to a KT-400 for a total of 240 external inputs. Adding the 16 onboard inputs of the KT-400 gives a total of 256 inputs per KT-400. For further details, check the KT-MOD-INP16 KT-400 Expansion Module 16-Zone Input with SPI Cable, Install Sheet, DN1776.
  • KT-MOD-OUT16: The KT-MOD-OUT16 is a 16-output module. It can be used for elevator access control with additional hardware. Up to 16 output modules can be connected to a KT-400 for a total of 256 outputs. For further details, check the KT-MOD-OUT16 KT-400 Expansion Module 16-Output with SPI Cable, Install Sheet, DN1781.
  • KT-MOD-REL8: The KT-MOD-REL8 is an 8-relay outputs expansion module used as general relays or elevator control outputs. Up to 32 relay modules can be connected to a KT-400 for a total of 256 relays. For further details, check the KT-MOD-REL8 KT-400 Expansion Module 8-Relay Output with SPI Cable, Install Sheet, DN1786.

The following table summarizes the options associated with each module:

Table 1. Expansion module options
Expansion Module Options
KT-MOD-INP16 Controller inputs (up to 256) and/or elevator inputs (up to 64 per elevator door)
KT-MOD-OUT16 Outputs relays (up to 256) and/or elevator outputs (up to 64 per elevator door)
KT-MOD-REL8 (Note) Relays (up to 256) and/or elevator outputs (up to 64 per elevator door)
Note: There are already 4 relays available on the KT-400. To prevent redundancy unless it is planned, select the Relay number assignments check box. The 9-16 relay configuration is set by default.
  1. If an expansion module(s) is(are) connected to a KT-400, click the SPI module configuration button. The Expansion modules setup appears.
    If you want to then go to
    configure an input module KT-MOD-INP16 2
    configure an output module KT-MOD-OUT16 5
    configure an output module KT-MOD-REL8 6
    modify an existing expansion module configuration 7
  2. To add a KT-MOD-INP16, select the Input Module tab and click on Add. If there is more than one input module listed, ensure that you select the correct one before changing the input assignments. Assign names to the modules in the language fields and choose the options.
  3. Select the DEOL: Double end-of-line resistor JP4 On check box to define a KT-MOD-INP16 module in DEOL.
    Note: The entire expansion board is used to provide 8 inputs with DEOL. These 8 inputs are added of the next group of 8 inputs. For example, if inputs #33-40 are linked to a DEOL module, inputs #33-40 and #41-48 are not available for other modules.

    Controller inputs 1-16 are reserved to the inputs on the KT-400.

  4. Select the inputs numbers in one of two ways; using the list or the Extended selection box. Right-click the Inputs menu to view the Extended selection box. For more information, see Using the extended selection box.
    Note: This is an exclusive condition. You cannot select the same item in the Inputs list and in the Elevator inputs list because it will be a duplicate, and the system does not accept any duplicate. For example, Inputs # 17-24 cannot be selected twice. Another way to let you understand this concept, is that in the Elevator inputs menu the same item is not be available for the same door. The same concept applies for the Elevator outputs menu.
  5. To add a KT-MOD-OUT16, select the Output Module tab and click on Add. When you click the Add button, a menu appears and lets you select which output module you want to add. Assign names to the modules in the language fields and choose the options.
  6. To add a KT-MOD-REL8, select the Output Module tab and click on Add . When you click the Add button, a menu appears and lets you select which output module you want to add. Assign names to the modules in the language fields and choose the options.
    Warning: There are already 4 relays available on the KT-400. Make sure to check the relay number assignments to prevent redundancy unless it has been planned on purpose.
  7. From the Summary tab, you can modify all the modules. Make sure to highlight the module you want to modify in the left column before doing any modifications on the right side.
  8. When you have finished configuring the expansion modules, click OK to return to the KT-400 configuration window.
    Note: For more information, see Connection Configuration.