Danfoss PVG 120 Technical Information page 13

Technical Information
Safety in Application
PVG 120 Proportional Valve Group
Electrical block diagram for the illustration above
Example of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoring
output for hydraulic deactivation.
Man present
Emergency
stop switch
A
PVE 1
Neutral detection / Supply control
1)
C
signal
OFF
≠
Delay
neutral
PVE 2
Neutral detection / Supply control
1)
C
signal
OFF
≠
Delay
neutral
A – Emergency stop/man present switch
B – PVEH fault monitoring signals
C – Neutral signal detection
D – Hydraulic deactivation
520L0356 • Rev JA • Mar 2014
PVEH
with AMP
connector
1(U
S
2(U
DC2
3( )
B 4(Error)
PVEH
with AMP
connector
1(U
S
2(U
DC2
3( )
B
4(Error)
E2
E1
2)
Alarm
logic
Output
3)
Memory
high=on
low=off
Hydraulic
D
deactivation
Fault detection output
P301 318
)
)
)
)
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