Electronic Pressure Control

Product catalog summary

Overview

This document presents technical information on the Electronic Pressure (EP) Compensation Control designed for PVX Series Variable Displacement Pumps. The control system enables remote-controlled, pressure-compensated performance, optimizing pump output flow relative to pressure demands.

Technical Specifications

Fluid Type: ISO 32 oil
Operating Temperature: 115°F
Pressure Ranges Available: 500-1000 psi, 600-2000 psi, 650-3000 psi, 700-4000 psi
Input Voltage: 12 VDC and 24 VDC
Input Current Range: Up to approximately 2.4 Amps at 12 VDC and 1.2 Amps at 24 VDC

Performance Characteristics

The control system modulates pump output flow as a percentage relative to system pressure, maintaining consistent performance across varying pressures. Response curves illustrate the relationship between regulated pressure and input current for both 12 VDC and 24 VDC inputs, demonstrating precise pressure control within specified ranges.

Control Features

Remote control capability for pressure compensation
Spring bias setting range to adjust system response
Pressure regulation tailored to specific pressure ranges to suit application needs

Graphical Data Summary

Graphs included in the document depict:

Output flow percentage versus pressure (psi), showing how flow decreases as pressure increases, consistent with pressure compensation principles.
Regulated pressure versus input current at 24 VDC and 12 VDC, indicating linear control behavior and enabling precise pressure adjustments through electrical input.

Contact Information

Manufacturer: Hartmann Controls
Address: 604 Progress Drive, Hartland, WI 53029, USA
Phone: (262) 367-4299
Fax: (262) 367-5645
Website: www.hartmanncontrols.com
Email: [email protected]

Critical Notes and Recommendations

Ensure use of ISO 32 oil at 115°F for optimal performance and compatibility.
Select appropriate pressure range based on application requirements to maximize efficiency and control accuracy.
Input voltage and current must be within specified limits to maintain reliable operation and avoid damage.

Catalog excerpts

PUMPS - MOTORS - CONTROLS EP, Electronic Pressure Compensation Control for PYX Series Pumps 604 PROGRESS DRIVE, HARTLAND, WI 53029

Open the catalog to page 1

PROPORTIONAL PRESSURE SYSTEM TITLE: THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF HARTMANN CONTROLS INC., AND IS NOT TO BE USED IN A MANNER DETRIMENTAL TO HARTMANN CONTROLS INC. SCMEP ELECTRONIC PRESSURE COMPENSATOR 604 PROGRESS DRIVE HARTLAND, Wl 53029

Open the catalog to page 2

THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF HARTMANN CONTROLS INC., AND IS NOT TO BE USED IN A MANNER DETRIMENTAL TO HARTMANN CONTROLS INC. EPPUMP TITLE:PVX PUMP WITH AN ELECTRONIC PRESSURE COMPENSATION CONTROL

Open the catalog to page 3

NOT TO SCALE TITLE: THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF HARTMANN CONTROLS INC., AND IS NOT TO BE USED IN A MANNER DETRIMENTAL TO HARTMANN CONTROLS INC. OUTLINE OF AN ELECTRONIC PRESSURE COMPENSATION CONTROL DWG NO: 53308DIM

Open the catalog to page 4

POWER INPUT TERMINALS SAE #4 O-RING, COMMAND SIGNAL INPUT PORT THE INFORMATION CONTAINED HEREIN IS THE PROPERTY OF HARTMANN CONTROLS INC., AND IS NOT TO BE USED IN A MANNER DETRIMENTAL TO HARTMANN CONTROLS INC. LAYOUT OF AN ELECTRONIC PRESSURE COMPENSATION CONTROL

Open the catalog to page 5

RESPONSE CURVES OF ELECTRONIC PRESSURE COMPENSATION CONTROL IN SELECT PRESSURE RANGES; ISO 32 OIL @ 115 o F INPUT CURRENT @ 12 VDC (Amps) 0 REGULATED PRESSURE (bars)

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ELECTRONIC PRESSURE COMPENSATION CONTROL BIAS SETTING ADJUSTMENT 1. ENERGIZE POWER INPUT TERMINALS AND REDUCE AMPERAGE TO THE MINIMUM SHOWN ON THE EP CHART 2. REMOVE ACORN NUT EROM THE REMOTE COMPENSATOR. INSERT ALEN WRENCH INTO SCREW HEAD. 3. HOLDING THE WRENCH TIGHT UNLOCK THE JAM NUT. 4. DEAD-HEAD PUMP WHILE WATCHING THE PRESSURE GAUGE AND GENTLY ADJUST BIAS SPRING TESSION: A. CLOCKWISE TURN INCREASES PRESSURE SETTING B. COUNTER-CLOCKWISE TURN DECREASES PRESSURE SETTING 5. SET BIAS SPRING TENSION ACCORDING TO THE EP-RC COMPENSATION CHART. LOCK JAM NUT. 6. COVER THE SCREW WITH ACORN NUT AND...

Open the catalog to page 8