Figure 2. High/Low Level Failsafe
(See Fig. 3 and 4)
SW1
Position 1
SW1
Position 2
Sensitivity
Off
Off
1 pF, High
Off
On
2 pF
On
Off
5 pF, Medium
On
On
10 pf, Low
SW1
Position 3
SW1
Position 4
Time
Delay
Off
Off
1 second
Off
On
4 seconds
On
Off
8 seconds
On
On
15 seconds
Figure 3. Sensitivity Settings
Figure 4. Time Delay Settings
(See Fig. 2)
Figure 1. VRF-1000 Electronics
Failsafe Selection
High Level Failsafe Operation
· DIP Switch SW1 position 5 is on.
· If the electrical power fails, the relay turns off. This indicates material
as if the tank were full.
Low Level Failsafe Operation
· DIP Switch SW1 position 5 is off.
· If the electrical power fails, the relay turns off. This indicates material
as if the tank were empty.
The output relay contacts are labeled in the un-powered alarm state. The relay is energized
when the VRF-1000R is not alarmed. This status may be opposite that of other Bindicator
®
brand units. If the VRF-1000R is replacing an older Model RF unit, connections will need to
be opposite. If a connection was made to NC1 terminal of the RF, connect now to the NO1
terminal of the VRF-1000R. C1 and C2 connections would remain the same.
Summary of Contents for VRF-1000R Series
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