ASFOM FPI Series - Contact Closure Point-to-Point Transmission

ASFOM FPI Series - Contact Closure Point-to-Point Transmission 1ASFOM FPI Series - Contact Closure Point-to-Point Transmission 2

The KBC FPI series is part of the ASFOM product family and provides unique, user-configurable solutions for contact closure signals. It supports transmission of up to 256 simplex or duplex contact closure signals over either one or two multimode or singlemode optical fibres. Due to the ASFOM flexibility, duplex solutions can either be symmetrical or asymmetrical with respect to the signal quantities. The plug-and-play design ensures ease of installation with no electrical or optical adjustment needed. LED indicators are provided to show the operational status of the unit clearly. Depending on system requirements, units are available in compact wall-mount, wall-mount, 1U or 2U 19” rack or 3U or 4U chassis card.

Typical System Configuration:

ASFOM FPI Series - Contact Closure Point-to-Point Transmission schematic


  • Up to 256 full-duplex contact closure signals
  • Simplex and duplex solutions
  • No fixed configuration
  • All screw block terminal connectors
  • Multimode and singlemode
  • Wall-mount, rack or chassis configurations


Contact Closure
Response Time: 500μs
Input: Dry Contact Closure, TTL
Output: SPST Relay, Normally Open
Switch Rating: 1A @ 30 Vdc max, 0.5A @ 125 Vac max
Wavelength (Single & WDM): 1310nm, 1550nm
Fibre: Multimode or Singlemode
Number of Fibres: 1 or 2
Power Input Wall-mount: +12-24 Vac/dc
Power Supply for Wall-mount: Input: 100 ~ 240 Vac; Output: +12 Vdc
Rack Module: Input: 100 ~ 240 Vac @ 2A
Chassis Card: Supplied from FR3 or FR4 PSU

Operating Temperature: -40°~+70°C / -40°~+158°F
Storage Temperature: -40°~+70°C / -40°~+158°F
Operating Humidity: 0 to 95% non-condensing
Mean Time Between Failure (MTBF): >100,000 Hours
Dimensions (Wall-mount L x W x H): 221mm x 155mm x 36mm (8.7” x 6.1” x 1.42”)
Dimensions (Rack): 1U 19”, 1U; 2U 19”, 2U
Number of 3U or 4U Chassis Card Slot: Depends on configuration
Contact Closure: 8 Way Screw Block terminal
Fibre: ST, SC or FC (ST fitted as standard)

Wall-mount: Screw Block Terminal
Rack: IEC