The Evactron strobe relay board has been designed to monitor and switch alert and evac strobe indicators, up to 5 amps per circuit. SRB1-P has been configured for a 2 wire monitored output which reverses polarity between alert and evac, LED’S have been provided for strobe circuit status and a fault relay with voltage free contacts for strobe circuit fault condition.
In normal operation the SRB1-P should display a “OK” green led showing circuit integrity.
OPEN CIRCUIT- the yellow “O/C fault” led will illuminate, the “OK” led will turn off and the fault relay will de-energize.
SHORT CIRCUIT- the red “S/C fault” led will illuminate, the “OK” led will turn off and the fault relay will de-energize.
The fault relay is normally energized and de-energizes on fault or if input voltage is lost.
NOTE: In the event of an open circuit the output voltage is still supplied and is disabled in a short circuit condition.
Supply voltage 20-30 VDC
Operating current 30mA stand-by, 70mA Alert, 100mA Evac
Alert strobe current 5 Amps max
Evac strobe current 5 Amps max
Dimensions 75mm L x 72mm W x 25mm H
End of line resistor 4K7 Ohms