Gemini Relay Control Logic

The Gemini has 7 available relays for control logic.

• 2 Pre-Event Relays – One per VTN, which are energized for a configured time period prior to the Event and goes OFF 1-2 seconds before the Event Starts. The control logic will not allow either Pre-Event relay to energize if either VEN is in Event.
• 2 Moderate Event Relays – One per VTN, which are energized when the the Event Starts and remains ON for the duration.
• 2 High Event Relays – One per VTN, which are energized when the the Event Starts and remains ON for the duration.
• 1 Pending Event Relay which is energized when the Event is called and remains ON for the duration.

 All relays ar DPDT and can be wired to NO or NC terminals. The Pending relay is used for the beacon and has 1 extra NO/NC contact available for use.

If the VTN’s share a common load then only the 3 VEN1 relays should be used and the relay configuration code should be 2. If there are 2 separate loads then the code will be 4. The configuration is set in GRIDview and the installer needs needs only to advise how the relays were wired.