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VRF180913 Rev. A
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FAIL-SAFE SELECTION
The VRF II Series models are factory set for high level fail-safe operation. The Fail-Safe is controlled by SW1,
position 5.
HIGH LEVEL FAIL-SAFE OPERATION (DEFAULT)
HIGH LEVEL FAIL-SAFE
NC2
C2
NO2
NC1
C1
NO1
Level BELOW Probe
NC2
C2
NO2
NC1
C1
NO1
Level ABOVE Probe
DIP Switch
•
STANDARD: SW1-5 is OFF
•
ADVANCED: SW5-1 is OFF
Alarm State (material above the probe)
• Main Relay is de-energize
d
Relay NC contacts are closed
Relay NO contacts are open
• Alarm LED is
ON
Non-Alarm State (material above the probe)
• Main Relay is energ
ized
Relay NC contacts are open
Relay NO contacts are closed
• Alarm LED is
OFF
Note: If the electrical power fails, the main relay turns OFF, giving the same
indication as if material is above the probe.
LOW LEVEL FAIL-SAFE OPERATION
LOW LEVEL FAIL-SAFE
NC2
C2
NO2
NC1
C1
NO1
Level ABOVE Probe
NC2
C2
NO2
NC1
C1
NO1
Level BELOW Probe
DIP Switch
•
STANDARD: SW1-5 is ON
•
ADVANCED: SW5-1 is ON
Alarm State (material below the probe)
• Main Relay is de-energi
zed
Relay NC contacts are closed
Relay NO contacts are open
• Alarm LED is
ON
Non-Alarm State (material above the probe)
• Main Relay is energiz
ed
Relay NC contacts are open
Relay NO contacts are closed
• Alarm LED is
OFF
Note: If the electrical power fails, the main relay turns OFF, giving the same
indication as if material is below the probe.
Summary of Contents for VRF II Series
Page 1: ...IOMVRF180713 Rev A VRF II Series Installation Operation Manual IOMVRF180913 Rev A ...
Page 2: ......
Page 24: ...20 VRF180913 Rev A www bindicator com 20 IX DIMENSIONAL DRAWINGS venture ...
Page 25: ...21 www bindicator com VRF180913 Rev A 21 ...
Page 26: ...22 VRF180913 Rev A www bindicator com 22 venture ...
Page 27: ...23 www bindicator com VRF180913 Rev A 23 ...
Page 28: ...24 VRF180913 Rev A www bindicator com 24 Optional Lights venture ...
Page 29: ...25 www bindicator com VRF180913 Rev A 25 Optional Lights ...
Page 30: ...26 VRF180913 Rev A www bindicator com 26 Notes ...
Page 31: ...27 www bindicator com VRF180913 Rev A 27 Notes ...