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| CT-7108
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Supervised
Contact Closure |
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| For Critical Contact Closure
Monitoring |
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The CT-7108 transmitter and CR-7008 receiver system transmits supervised
status of eight separate contact closures over a single optical fiber
conductor.
To close a contact, the voltage at the CT-7108 input must be within
predetermined range. Any voltage that differs from the predetermined values
will result in an open contact condition at both the transmitter and
companion CR-7008 receiver. If the CT-7108 loses power or the fiber is cut
the CR-7008 contacts will open and alarm condition will be indicated.
All inputs are transient protected against excessive surges on the signal
and power leads. Integral indicators are provided on both units to
continuously indicate the link and contact closures status as well as proper
operating power to simplify troubleshooting.
For unsupervised contact closure monitor see the
CT/CR-7001, CT/CR-7008,
and
CT/CR-7016 |
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| Specifications |
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Important Features |
| Number of Channels |
8 |
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· 8 Independent
Contacts |
| Transmitter Input to close |
2.91 and 3.70 volts |
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on One Fiber |
| Tx Input Impedance |
2 K ohms +/- 1% |
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· Signal &
Power & Link |
| Receiver Output |
Relay Contacts |
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Indicators |
| Output Contact Ratings |
0.5 A @ 125 VAC
1.0 A @ 24 VDC |
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· Multimode &
Single-mode
Versions available |
| Speed of Response |
10 ms maximum |
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| Optical Output Power |
-15 dBm (multimode),
-15 dBm (single-mode) |
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| Optical Loss Budget |
0-10 dB (multimode),
0-12 dB (single-mode) |
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| Signal Connectors |
Removable terminal block |
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| Power Requirements |
11-24 VAC/DC @210mA |
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| Operating Temperature |
-35 to +75 degrees C |
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| Physical Size (mm) |
5.0”(127)H x 1.0"(25.4)W x
7.0"(178)L |
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*Note all specifications are subject to change without notice
Copyright 2008
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Fiber Optic Communications Systems
