Description
The PQP-179-P-PFN is a universal pump control module for open or closed circuits, featuring an integrated power output stage and an optionally activatable slide valve controller for the Control valve with Profinet connection. It is used to control the swivel angle, pressure and flow rate of Control pumps.
Key properties and characteristics of the PQP-179-P-PFN:
- Control of swing angle, pressure, power and slide valve position
- For pumps in open or closed circuits
- Suitable for universal use, including valve position control and other control tasks
- Setpoint specification and monitoring via the fieldbus (Profinet)
- Freely scalable analogue inputs; can be expanded with an LVDT module
- Optimised control function, digital, reproducible adjustment
- Two sets of parameters can be selected for pressure control
- Integrated power amplifier
- Alternative analogue control variable for control valves with OBE
- Master-slave function for controlling several pumps connected in parallel
- Easy parameterisation using the WPC-300 software or via the fieldbus
- The module can control a directional control valve for adjusting the swivel angle on the pump. It is It is possible to control valves using one or two solenoids.
- It is possible to activate an internal slide position controller for the control valve, which controls 2-solenoid valves with electrical feedback of the slide position.
- The control system is designed as a cascade control system and is therefore suitable for a wide range of pumps from various manufacturers.
- Swivelling past zero is possible by setting the setpoint in the negative range.
- Setpoint and actual values can be read in as either voltage signals (0–10 V) or current signals (4–20 mA).
- The inputs are freely scalable, meaning that individual signal ranges can also be analysed.
- The module is an ideal replacement for OEM control boards such as the Rexroth VT-VPCD for HS4 or EO4 adjustment.
Things to know:
- The order number is PQP-179-P-PFN.
- Alternative products include the PQP-179-P and the PQP-176-P.
The module controls reversible or non-reversible variable-displacement pumps by actuating the swivel-angle valve. The external setpoint can be influenced by various parameters and functions. The integrated power-limiting function and the pressure regulator, which can be connected in cascade, can intervene in both flow directions. For control valves with electrical feedback of the spool position, the unit features an optionally activatable additional control.
