Control Signal and Relay Contacts

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

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

The FOI-2991, FOI-2992, FOI-2993, and FOI-2994 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 FOI-2993 and FOI-2994 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 has 12 SPST Form A latching relays and the FOI-2994 has 8 SPDT Form C latching relays.

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.

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, FOI-2992, FOI-2993 and FOI-2994 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.

FOI-2991:

  • 0 to +5 VDC Inputs

FOI-2992:

  • +12 to +24 VAC/VDC Inputs

FOI-2993:

  • 12 SPST Form A Latching Relay Closures

FOI-2994:

  • 8 SPDT Form C Latching Relay Closures
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
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
This product has no accessories

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