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 |
| 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 |
