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Parker Hannin Corporation
TFP 5715-734UK.indd 26.03.24
2-Way Servo Proportional Valves
Series TFPOperation Manual
5. Operating Instructions
Spool Position at Power Down/Center Position
For valves with zero lap spools, distinction
must be made between hydraulic neutral
position and power-down position. Neutral
position is taken at neutral input signal, cor-
responding to zero position of the hydraulic
symbol. When the valve is switched o – no
supply voltage, no enable, current signal (code
S) < 3,8 mA – zero lap valves take the power
down position (approximately 10 % opening)
according to the ordering code. For valves with
overlap spools, neutral position and power
down position are the same (zero position).
Supply pressure must be ensured before valve
is energized.
Solenoid Current Monitoring
If the actuator current time interval exceeds 10
seconds, the actuator is switched o to prevent
overheating. For normal operating conditions this
state will not reached, but it may occur with a con-
taminated sluggish valve.
In this case the reason for the contamination
should be rectied (hydraulic uid exchange,
ltration review, valve ushing).
The overcurrent shuto condition may be resetted
by the actions below:
Code 0: Temporary disconnection of the supply
voltage.
Code 5: Temporary disconnection of the enable
signal.
Code 7: Temporary disconnection of the enable
signal.
The shuto of the VCD actuator due to over-
load will be indicated via the LED.
Temperatur monitoring
The prortional directional control valves have internal
temperature monitoring of the valve electronics.
When an overtemperature is reached, the
valve switches o automatically.
A restart is only possible again when the
temperature of the valve electronics is within
the operating temperature range.
ProPxD Parameterizing Software
The ProPxD software allows quick and easy setting
of the digital valve electronics. Individual parame-
ters as well as complete settings can be viewed,
changed and saved via the comfortable user inter-
face. Parameter sets saved in the non-volatile
memory can be loaded to other valves of the same
type or saved for documentation purposes.
The PC software can be downloaded free of charge
at www.parker.com/isde – see page “Support" or
directly at www.parker.com/propxd.
(IO-Link Master USB is required)
6. Interface and Parameter
IO-Link Interface
IO-Link communication takes place via the exter-
nally accessible M12 interface.
The IO-Link interface allows an external access to
the available valve parameters via an IO-Link
master or via the ProPxD software.
Parker IO-LINK MASTER USB
order no.
40983544
(Parameter overview in the operating instructions)
NFC Interface
The NFC interface allows a wireless access to valve
data via the Parker App PDC (available free of
charge in the App Store and Google Play Store).
NFC communication may only be used for mainte-
nance purposes by trained personnel.
The valve may have hot surfaces. There is a
risk of burn injury. Before using NFC radio
communication, ensure that the valve has
cooled down suciently.
IO-Link interface