PFR CARD (V3F ELEVATORS)

Description

• This PFR ( Phase Failure Relay ) is used only in the V3F Elevator Control Panel.
• This Card has only three inputs that are R Phase, Y Phase & B Phase. Neutral is not required.
• No auxiliary Power supply required to this card. It generates operational supply from 3 phase supply only.
• This card has one ( Healthy ) Relay output with LED indication & its Common – NO relay Contact output at the connector.
• Healthy relay is ON only when all three phases are present in the card with any sequence.

eg.-

( R Phase -> Y Phase -> B Phase ) or ( R Phase -> B Phase -> Y Phase )

• If one/ two phases are not present in the card then Healthy Relay is OFF & Phase Fail LED is ON.
• This card also has Under-Voltage & Over-voltage protection with the LED indication. In that condition also Healthy Relay is OFF.