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Weed Instrument Company
- PO Box 300
- Round Rock, TX 78680-0300
- 800-880-9333
- 512-434-2800
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Cost Effective Small Package
The FOT-CC fiber optic transmitter and FOR-CC fiber optic receiver are deigned to transmit contact closure data over long distances. The FOT-CC transmitter provides a closed contact signal to the FOR-CC receiver, which activates a single pole double throw (SPDT) relay. They provide ground loop isolation and can be used with 50/125 to 200/230 µm fiber optic cable. The DIN-Rail housings of theses modules facilitate quick and easy mounting on industry standard hardware.
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Applications:
- Remote switch monitoring
- Remote relay / solenoid operation
Features and Benefits of Weed Instrument FOT/FOR-CC:
- Transmission distances up to 5000 meters (16,400 ft.)
- Compact DIN-Rail mounting
- Dry contact input from devices such as push buttons, limit switches and relays
- Form-C relay output (UL/CSA 0.6A/125Vac 2A/30Vdc)
- Compatible with ST Fiber Terminations
- 24 Vdc powered, matching 115/230Vac power supply available
Selection Guide:
| Data Sheet (PDF) |
Description |
Input/Output Type |
Optical Connector |
Instruction Sheet (PDF) |
| FOT-CC 850 MM |
Fiber Optic Transmitter – Contact Closure, 850 nm, Multi-mode |
Dry Contact Input |
ST |
FOT-CC 850 MM |
| FOT-CC 1300 MM |
Fiber Optic Transmitter – Contact Closure, 1300 nm, Multi-mode |
Dry Contact Input |
ST |
FOT-CC 1300 MM |
| FOT-CC 1300 SM STD |
Fiber Optic Transmitter – Contact Closure, 1300 nm, Single Mode, Standard Power, |
Dry Contact Input |
ST |
FOT-CC 1300 SM STD |
| FOR-CC 850 MM |
Fiber Optic Receiver – Contact Closure, 850 nm, Multi-mode |
Form-C Relay Output |
ST |
FOR-CC 850 MM |
| FOR-CC 1300 MM/SM |
Fiber Optic Receiver, Contact Closure, 1300 nm, Multi-mode or Single Mode |
Form-C Relay Output |
ST |
FOR-CC 1300 MM/SM |
| PSM-CC |
Power Supply, 120VAC to 24VDC |
100-250VAC Input / 24VDC @ 200mA Output |
N/A |
PSM-CC |
Theory of Operation:
The following chart indicates how the output relay contacts will operate on the FOR-CC provided the input contacts on the FOT-CC are wired such that they are closed in a normal operating state and open in a failure mode:
| Condition |
FOR-CC Output Relay State |
| 1. Normal Condition, Input Closed |
Engergized |
| 2. Normal Condition, Input Open |
De-energized |
| 3. Loss of Power at TX |
De-energized |
| 4. Loss of Power at RX |
De-energized |
| 5. Fiber loss (or disconnected) |
De-energized |
| 6. Component Failure at TX |
De-energized |
| 7. Component Failure at RX |
De-energized |
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