Pveh, Connection To Fault Monitoring Output - Danfoss PVG 120 Technical Information

Technical Information
Electrical Actuation
PVG 120 Proportional Valve Group
3. Internal clock – The solenoid valves are disabled when the internal clock frequency fails, and the
main spool will return/stay in neutral.
Attention
It is up to the customer to decide on the required degree of safety for the system.
The fault monitoring does not work if the supply voltage to PVEH is cut off - for example by a neutral
position switch. When using PVEH with passive fault monitoring it is up to the customer to decide on the
degree of safety required for the system (See
degrees of safety).

PVEH, connection to fault monitoring output

Normal
Transistor output function – Green
A: External relay, B: Solenoid valve (e.g. PVPE)
Via an external relay pin 3 can be connected to an electrically actuated valve which will relieve pump oil
flow to tank, e.g. PVPE.
Other possible connections:
•
a valve to relieve the LS signal
•
a signal lamp, an alarm horn
•
a pump cut-out, etc.
520L0356 • Rev JA • Mar 2014
Safety in Application for more information about different
Fault
Transistor output function – Red
A: External relay, B: Solenoid valve (e.g. PVPE)
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