Examples Of Wiring Block Diagram - Danfoss PVG 120 Service Manual

Service Manual
Safety in application
10
PVG 120 Proportional Valve Group

Examples of wiring block diagram

Example of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoring
output for hydraulic deactivation.
Emergency
stop
A
PVE 1
Neutral detection / Supply control
C
signal
≠
neutral
PVE 2
Neutral detection / Supply control
C
signal
≠
neutral
A– Emergency stop / man present switch
B– PVE Fault monitoring signals
C– Neutral signal detection.
D– Hydraulic deactivation
System Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of the
hydraulic system.
W
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
520L0247 • Rev JA • May 2014
Man present
switch
1)
OFF
Delay
1)
OFF
Delay
E1
Alarm
2)
logic
Output
3) Memory
high=on
low=off
Fault detection output
PVEH
with AMP
connector
U
S
U
DC2
B
Error
PVEH
with AMP
connector
U
S
U
DC2
B
Error
E2
Hydraulic
D
deactivation
P301 318