Installation Manual

INS_FVT/FVR110_REV–
10/27/11
PAGE 6
FIGURE 8 – CONTACT CLOSURE
The FVT110 transmits the state of a contact closure input over fiber to an output relay on the FVR110.
FIGURE 9 – CONTACT CLOSURE SWITCH SETTINGS
The switch is located on the front of the standard size units. The FVT110M small-size unit only supports the CIN mode.
INSTALLATION AND OPERATION MANUAL FVT/FVR110(M,S)1[/M]
TECH SUPPORT: 1.888.678.9427
Dry contact closure input. Applying
a voltage to these pins may damage
the unit.
Dry contact closure input. Applying
a voltage to these pins may damage
the unit.
The FV110 series includes support for bi-directional contacts. The FVT110 and the FVR110 have 4 different modes to set
their COUT contact, set by the CC dipswitches:
Switch 1 Switch 2 Resulting Mode
ON ON CIN
OFF ON Negative CIN
ON OFF Negative Link
OFF OFF Link
The CIN and Negative CIN modes transmit the status or negative status of a contact device, such as an alarm, from the
source to sink. The source takes the contact state from the CIN pins and turns the state into digital information to be
transmitted through the fiber connection to the sink. The sink then interprets the received digital information back into the
contact state, or negative contact state to the COUT pins, depending on what mode is selected by the sink.
The Link and Negative Link modes affect the COUT pins of the sink based on the status of the fiber link between the source
and the sink. In the Link mode, if a fiber link is present between the sink and the source, the sink will close the COUT pins.
If a Fiber Link is not present in Link mode, the sink will open the COUT pins. The converse of this is true if the mode is
Negative Link.
NOTE: It is possible to configure the FVR110 output relay to indicate the link status instead of the contact closure input when linked to a FVT110.
FVT110/MFVT110