Rexroth HED8OH-20 50K14 Pressure Relays High-precision Control Electric Safety New
Product Description:
Advantages and features of Rexroth pressure relays
High-precision control and signal stability
Built-in plunger-type mechanical structure and PID closed-loop regulation technology can achieve a control accuracy of ±0.5% within the set pressure value range, ensuring efficient conversion and response speed of hydraulic system pressure and electrical signals.
Adopting high-resolution DAC (digital-to-analog converter) and multi-channel configuration design, it supports synchronous control of multiple proportional valves and improves system coordination.
Pressure protection and mechanical safety
The linkage design of plunger and spring seat combined with damping hole structure can effectively buffer the impact of sudden pressure change on micro switch, prevent spring overload damage or false triggering signal.
The sealing ring is made of oil-resistant rubber material, combined with precision machined valve body, to reduce the risk of oil leakage, and adapt to long-term stable operation under high pressure (such as 250Bar) conditions.
Intelligent diagnosis and compatibility
Integrated overcurrent, overheating and signal abnormality detection functions, through LED status indicator and fault code output, quickly locate system faults and shorten maintenance time.
Adapt to 24V DC wide voltage input, compatible with industrial standard power supply and Rexroth solenoid valve, overflow valve and other components, reducing the complexity of system integration.
Scenario Adaptation Flexibility
Supports multi-mode applications such as safety protection, sequential motion control, hydraulic pump unloading and opening and closing, suitable for pressure monitoring needs in machine tools, injection molding machines, metallurgical equipment and other scenarios.
Usage Precautions
Selection and Installation Specifications
The corresponding model should be selected according to the system pressure range (such as HED 8 series supports 250Bar) to avoid overpressure causing micro switch failure or sealing ring damage.
During installation, ensure that the terminal is tightened and away from strong electromagnetic interference sources. It is recommended to use shielded cables to connect signal lines to reduce noise impact.
Debugging and Maintenance Requirements
During debugging, the set value needs to be calibrated through Rexroth special software (such as REXROTH debugging tool) to avoid action delay or false triggering caused by mechanical errors.
Regularly check the spring preload and micro switch contact status. It is recommended to perform functional tests every 2000 hours of operation or when the pressure difference is abnormal.
Environment and operation restrictions
Avoid using in environments with high dust concentration or humidity >90%. If necessary, install a protective cover or air filter to prevent pollutants from invading the valve body.
Do not use directly in unclean hydraulic oil or impurity-containing media, otherwise it may block the damping hole and affect the pressure sensing accuracy.
Storage and troubleshooting
When storing for a long time, apply anti-rust oil and seal the package to prevent spring rust or sealing ring aging.
If oil leakage or abnormal signal occurs, first check the integrity of the sealing ring and the contact status of the terminal to avoid direct disassembly of the micro switch to cause structural damage.
Note: In actual application, the technical manual of the specific model (such as HEDE10-3X/250/1/-G1-K35-0) must be followed, and professional tools must be used for debugging.
| Factory Setting Pressure | 110-130psi |
| Terminals | #8-32 screws, 1/4 |
| Sample Rate | 5 times per second |
| Contact Type | SPDT |
| Contact Rating | 10A @ 125/250VAC |
| Endurance Test Cycle | 100,000 times |
| Usage | to control water pump |
| Electrical Connection | Screw Terminal |
| Power Supply | 24V |
| Theory | pump accessories |
FAQ
Q1: Wonder if you accept small orders?
A1: Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener ,we accept small order.
Q2: Can you send products to my country?
A2: Sure, we can. If you do not have your own ship forwarder, we can help you.
Q3: What's your payment terms ?
A3: By T/T,LC AT SIGHT,100% full payment.
Q4: How long is your production lead time?
A4:It depends on product and order qty. Normally, it takes us 15 days for an order with MOQ qty.
Q5: When can I get the quotation ?
A5: We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.
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