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Control Signal and Relay Contacts

Model #: FOI-2991 | FOI-2992 | FOI-2993 | FOI-2994 | FOI-2995 | FOI-2996

FOI-2991 | FOI-2992 | FOI-2993 | FOI-2994

The FOI-2991, FOI-2992, FOI-2993, FOI-2994, FOI-29995 and FOI-2996 all provide complete electrical isolation for control signals and relay closures. The units are uni-directional devices with the FOI-2991 and FOI-2992 having optical transmitters, while the others have optical receivers. Both the FOI-2991 and FOI-2992 can accept up to 12 individual control signals. The FOI-2991 can only accept a DC voltage of 0 to +5V, while the FOI-2992 can accept either a DC or AC voltage of +12 to +24V. The FOI-2993 and FOI-2995 have 12 SPST Form A relays, and the FOI-2994 and FOI-2996 have 8 SPDT Form C relays. The FOI-2993 and FOI-2994 are latching and the FOI-2995 and FOI-2996 are non-latching.

During power interruptions or failures, the relays on the FOI-2993 and FOI-2994 will hold the last commanded state until powered is restored and the relays are commanded differently, while the FOI-2995 and FOI-2996 will revert to the open state.

The units can be used in areas of high electrical noise or in and out of RF shielded enclosures. The fiber optic cable is not susceptible to interference caused by impulse noise, crosstalk, or EMI. Privacy of communications is also enhanced because the fiber optic cable does not radiate any emissions.

In addition, fiber optic cable offers much longer transmission distances than copper wiring. Multimode optics on the units can extend the distance to 2km. A typical link consists of either an FOI-2991 or an FOI-2992 at one end of the network transmitting optical signals to an FOI-2993 or an FOI-2994 at the other end of the network with a single fiber optic cable between.

Flexible Mounting and Powering Options

The FOI-2991/2992/2993/2994/2995 and 2996 are part of the FOI line of products designed for ruggedized mil applications. They are housed in the familiar FOI shielded can enclosure. For standalone applications they can be powered by adding a PSQ‐2909 AC supply or a PSQ‐2920 DC power supply (not included). Optionally, up to 8 FOI units can be mounted on CMA chassis adapters and installed in an RMC‐3101 or RMC‐2101 rack mount chassis. The units are powered redundantly by a common back plane connection.

Optical Transmitter

FOI-2991: 0 to +5 VDC inputs

FOI-2992: +12 to +24 VAC/VDC inputs

Optical Receiver

FOI-2993: SPST Form A latching relay closure

FOI-2994: SPDT Form C latching relay closure

FOI-2995: SPST Form A non-latching relay closure

FOI-2996: SPDT Form C non-latching relay closure

Features

FOI-2991: Accepts up to 12 signals, 0 to +5 VDC each

FOI-2992: Accepts up to 12 signals,+12 to +24 VAC/VDC each

FOI-2993/FOI-2995: Activates up to 12 single pole single throw (SPST) Form A relay contact pairs

FOI-2994/FOI-2996: Activates up to 8 single pole double throw (SPDT) Form C relay contact pairs

• During power interruptions or failures, the relays on the FOI-2993 and FOI-2994 will hold the last commanded state until powered is restored and the relays are commanded differently.

ELECTRICAL SPECIFICATIONS
 
Min
Typ
Max
Power Requirement Voltage Range (V)
7
9
12
Supply Current (mA)
-
400
-
 
FOI-2991 Data Rate (kbps)
DC
-
4.8
Sampling Jitter (%)
0
-
10
Input Voltage Range (VDC)
0
-
5
 
FOI-2992 Data Rate (kbps)
DC
-
4.8
Sampling Jitter (%)
0
-
10
Input Voltage Range (VDC/VAC)
12
-
24
 
Relay Coil Data Latching SPST, Form A 1A @ 30VDC, 0,5 A @ 125 VAC FOI-2993
Latching SPDT, Form C 1A @ 30VDC, 0,5 A @ 125 VAC FOI-2994
 
Environmental Storage Temperature (°C)
-40
-
85
OperatingTemperature (°C)
0
-
50
 
Interface Connector FOI-2991 DB-25 Female
FOI-2992
FOI-2993 DB-25 Male
FOI-2994
FOI-2995
FOI-2996
PHYSICAL SPECIFICATIONS
 
Length
Width
Height
Weight
Case Dimensions Size 2
4.5 in (114 mm)
1.312 in (33 mm)
2.562 in (65 mm)
2 lb (0.9 kg)
OPTICAL CHARACTERISTICS - All
Fiber
Size
Max Distance
Wavelength
Output Power
RX Sens Loss Budget
Multimode
62.5 / 125 μm
2 km
820 nm
-18 dBm
-30 dBm 12 dB
oi_FOI-2991.png
Standalone Operation  
PSQ-2909  Standalone AC Power Supply
PSQ-2920 Standalone DC Power Supply
WMA-3002 Wall Mount Adapter
WMA-2001 Wall Mount Adapter with ST Optical Patch
Chassis Mounting  
RMC-2101 2U, 19" Rack Mount Chassis. Holds up to 9 FOI Modules
CMA-2001 Chassis Mount Adapter for RMC-2101 Chassis. (1) per FOI Module required
PSM-2010 Spare Power Supply for RMC-2101
RP2 16 Channel Modular Bolt-On Connector Panel for RMC-2101
  
RMC-3101 3U, 19" Rack Mount Chassis. Holds up to 9 FOI Modules
CMA-3002 Chassis Mount Adapter for RMC-3101 Chassis. (1) per FOI Module required
PSM-3010 Spare Power Supply for RMC-3101
Industrial Solutions
RMC-3700  Environmental Enclosure for FOI Modules
CMA-3002 Chassis Mount Adapter for RMC-3101 Chassis. (1) per FOI Module required
PSM-3010 Spare Power Supply for RMC-3101

How to Buy

We support a variety of clients from multiple markets. To make the buying process the cleanest and most efficient we provide a number of ways to purchase our products.

See our How To Buy page to find the procurment method that works best for you and your business.