18
Automatic Control
APPENDIX B
Hydraulic Valve Guide
PV - Proportional Voltage Valve:
PV - Proportional Voltage Valve:
Namely, Danfoss PVG32, pilot operated proportional valves with "on-board" electronics, spool
position and fault monitoring.
Lower
Correction
Raise
Correction
On Grade
Deadband
PV Valve Signal
(% of Machine Voltage)
Valve Min.
Raise
Correction
0%
50%
100%
Gain = 1 (Linear)
Gain = 8 (Linear)
Gain = F (Linear)
Gain = 8 (Exponential)
25%
75%
Valve Min.
Lower
Correction
The PV valve signal is a low power ratiometric voltage signal that references the switched
power output (machine voltage).
I.e. 50% of machine voltage = No fl ow
25% of machine voltage = Full lower
75% of machine voltage = Full raise
Danfoss diagnostics:
Green LED on valve = OK
Red LED on valve = Fault
Application Notes: PV valves provide larger fl ows up to 32 GPM (120 l/m) and have more
accurate fl ows. For best performance use PVEH actuation modules and linear spools.
Valves are easily converted to interface with open center, closed center, and load sensing
hydraulic systems.
Raise cylinder port is the port closest to the black electronics module.
PV Valve Wiring:
PV Valve Wiring: (ATI-026040-XX)
D.F. Diagnostic
Switched Power
Ground
M
CB2
10-Socket
Connector
3
1
2
GND
PV Signal
Danfoss Hirschmann Connector
4
2
1
3
Danfoss
Amp. Connector
A
B
C
D
E
F
G
H
I
J
Blue
Green
Red
Orange
White
Black
White/Black
Ground
Not Used
Load Sense
