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CT/CR-7008     Contact Closure    Click for a larger image of Fiber Optic Contact closure
For Contact Closure or Status Monitoring Applications  

 Typical fiber optic contact closure application  

The Litelink CT/CR-7008 system consists of the CT-7008 transmitter and CR-7008 receiver. Both units utilize digital encoding techniques to transmit and receive eight separate contact closures over a single optical fiber conductor.  For a lower cost single channel version see the CT/CR-7001

The CT-7008 may be activated by dry contacts or TTL signals and the CR-7008 will reproduce these inputs as isolated output contact closures corresponding to the respective input signal. All inputs are transient protected against excessive surges present on the signal and power leads. The unit is completely fail-safe in that a loss of operating power or a broken fiber will force all contacts to the open condition. Integral indicators are provided on both units to continuously indicate the link and contact closures status as well as proper operating power thereby making system troubleshooting simple.
Specifications Important Features
Number of Channels  8     8 Independent Contacts
Transmitter Input  Dry contact or TTL          on One Fiber
Tx Input Impedance  3 K ohms max   Signal & Power & Link
Receiver Output  Relay Contacts         Indicators
Output Contact Rating  0.5 A @ 125 VAC
 1.0 A @ 24 VDC
  Multimode & Single-mode
      Versions available
Output Contact carry current  2.0 A maximum   Single model for stand
     alone or rack mount
Output Contact Resistance  100 milliohms maximum   Din Rail Mount Option
Speed of Response  10 ms maximum  
Optical Output Power  -15 dBm (multimode),
 -15 dBm (single-mode)
Optical Loss Budget  0-10 dB (multimode),
 0-12 dB (single-mode)
Signal Connectors  Removable terminal block
Power Requirements CT  11-24 VAC/DC @110mA
Power Requirements CR  11-24 VAC/DC @210mA
Physical Size  5.0(127)H  x 1.0"(25.4)W
     x 3.0"(76)L

*Note all specifications are subject to change without notice

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Liteway, Inc. 

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