Difference between revisions of "IP-LCM Connections"

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* '''Relay 5-8 (contact set #1)''':
* '''Relay 5-8 (contact set #1)''':
** '''Dry Contact''' mode: 250VAC/1A
** '''Dry Contact''' mode: 100VAC/1A
** '''Power Forwarding''' mode: 30V/100mA
** '''Power Forwarding''' mode: 30V/100mA

Revision as of 14:39, 10 October 2019


Connector overview

IP-LCM connectors


The IP-LCM module has 8 inputs. Each of them has a corresponding selector switch, with which one can select between a dry closing contact or an active input.

  • Left position: The input requires an active signal 12V to 48VDC. The input is galvanic isolated with an opto-coupler. Polarity as indicated on the drawing.
  • Right position: The input requires a dry contact


There are 8 relays, each with two sets of changeover contacts (DPDT). The contact terminals, Normally Open (NO), Normally Closed (NC) and Common (COM), are labeled in the silk print of the PCB.

Each output has a LED which indicates if the relay is active or not.

Relay 5 to 8 has a corresponding output selector switch. With this switch one can select if the Contact Set #1 should provide dry contacts, or if it should forward power from the power forwarding connector. Contact Set #2 will always provide dry contacts, regardless of the position of the output selector switch.

  • Left position: Dry Contact mode. Contact Set #1 provides dry contacts.
  • Right position: Power Forwarding mode. Contact Set #1 forwards power from the an external power supply connected to the IP-LCM unit. When the PSU is connected with the polarity as indicated in the drawing above, the "+" will appear on the Com terminal, and the "-" will appear on the NO-terminal when the relay is active. When the relay is in idle, the "-" will appear on the NC-terminal.
IP-LCM relays
Note icon The external power supply is required only when you need to forward power via relays 5 - 8. This is the only purpose of the power supply.

Relay contact ratings:

    • Relay Outputs: DPDT (Double Pole Double Throw). NO (Normal Open), NC (Normal Closed), COM (Common)
  • Relay 1 - 4 (both contact sets) and Relay 5-8 (contact set #2):
    • Switched voltage: < 250VAC Rated (400VAC Max)
    • Switched Voltage: < 2000 VA max
    • Switching Current: < 8A rated (12A max for 1 second)
  • Relay 5-8 (contact set #1):
    • Dry Contact mode: 100VAC/1A
    • Power Forwarding mode: 30V/100mA

See here for connections on the TKIS-2 unit itself