HMP Repair Services India
HMP (Hydro-Mechanische Präzisionstechnik) is a German specialist in hydraulic proportional control systems, directional spool valves, and integrated motion control solutions for precision industrial automation. With 55+ years of engineering expertise, HMP systems drive critical applications across European and Asian manufacturing. India's expanding automotive, injection moulding, and precision machinery sectors increasingly rely on HMP proportional valve technology for repeatability and pressure accuracy.
HMP (Hydro-Mechanische Präzisionstechnik) is a German specialist in hydraulic proportional control systems, directional spool valves, and integrated motion control solutions for precision industrial automation. With 55+ years of engineering expertise, HMP systems drive critical applications across European and Asian manufacturing. India's expanding automotive, injection moulding, and precision machinery sectors increasingly rely on HMP proportional valve technology for repeatability and pressure accuracy.
Synchronics Electronics has repaired HMP proportional valve electronics, integrated controllers, and spool actuator assemblies since 2008. Our team specializes in HMP's analog and CAN-based proportional solenoid drivers, pressure feedback compensation circuits, and integrated proportional directional control units — common failures in Indian injection moulding lines and automotive assembly systems. We service HMP equipment across Gujarat, Maharashtra, and Southern India with same-day diagnostics and component-level repair.
Expert repair of HMP proportional valve controllers and integrated hydraulic motion systems across India.
HMP Equipment We Repair — By Category
HMP Product Lines We Repair
Our engineers are trained on the full HMP product range. Below are the major product families we service.
HMP Proportional Directional Spool Valves
2/3/4-spool proportional directional control units with integrated electronics and pressure compensation. Failures typically involve solenoid coil shorts, spool centering spring issues, and onboard driver IC degradation affecting proportional control linearity.
HMP Proportional Pressure Relief Valve Systems
Pilot-operated proportional pressure relief valves with electronic load-sensing feedback. Common faults include pressure transducer offset errors, proportional solenoid dead-band drift, and pilot stage blockages from hydraulic contamination.
HMP Integrated Proportional Control Units
Compact all-in-one proportional directional spool and pressure control systems with CAN or analog command interface. Repair complexity arises from integrated circuit board failures, connector corrosion from hydraulic fluid exposure, and microcontroller firmware corruption.
HMP Solenoid Coil Actuator Assemblies
High-force spool centering solenoids and proportional electromagnetic coils for valve actuation. Failures stem from coil insulation breakdown, armature stiction, and voltage regulator failures in the onboard driver circuits.
HMP Pressure and Flow Feedback Transducers
Integrated pressure and flow transducers with analog or CAN output for closed-loop proportional valve control. Common issues include transducer diaphragm rupture, amplifier IC aging, and zero-drift in extreme ambient conditions.
Why Choose Synchronics for HMP Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on HMP equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common HMP Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in HMP equipment arriving at our workshop.
- ✓Proportional solenoid coil open or high resistance — Prolonged exposure to hydraulic fluid moisture and vibration causes insulation breakdown in the proportional solenoid windings. Coil resistance rises above 50 ohms, preventing full spool displacement and proportional control instability.
- ✓Pressure transducer offset drift or no signal — HMP's pressure feedback transducers degrade from prolonged system pressure cycling and thermal shock. Amplifier IC aging or cold-solder joints on the transducer PCB board cause 0-4mA output drift or complete signal loss.
- ✓Spool centering spring pre-load loss or hysteresis — Repeated solenoid actuation and hydraulic pressure cycling cause stress relaxation in HMP's dual centering springs. Spring rate degradation results in spool drift at zero command and poor control linearity — especially critical in injection moulding closed-loop systems.
- ✓Onboard proportional driver IC malfunction or thermal shutdown — HMP integrated proportional valve controllers use power MOSFETs and current-feedback amplifiers that fail from electrostatic discharge (ESD) damage during maintenance, or overheat from blocked cooling vents in dusty or humid Indian shop environments.
- ✓CAN bus communication loss or frame corruption — HMP's modern CAN-based proportional control units suffer from EMI ingress through poorly shielded cable runs near variable frequency drives (VFDs) or welding equipment common in Indian automotive plants. CAN transceiver IC or termination resistor failure causes intermittent or complete data loss.
- ✓Hydraulic fluid ingress into electrical connector or PCB — HMP valve integrations in dusty Indian foundry and automotive lines expose electrical connectors to airborne hydraulic mist. Moisture and fluid residue cause corrosion, green oxide growth on PCB traces, and short circuits between signal and power planes.
How We Repair Your HMP Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using HMP Equipment
We serve plant maintenance teams across all major industries where HMP automation is deployed.
Frequently Asked Questions — HMP Repairs
Do you repair HMP equipment anywhere in India?+
Yes. Synchronics repairs the complete HMP product range — proportional directional valves, pressure relief systems, integrated proportional controllers, solenoid actuators, and feedback transducers. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Surat, and all other cities. All repairs are handled in our Vadodara, Gujarat facility with 48-hour turnaround for most proportional valve electronics.
What is HMP's proportional valve deadband and how do you test it?+
HMP proportional directional valves typically specify 2-5% deadband (spool position error at zero command signal). Synchronics measures deadband using precision spool displacement transducers, analog ramp signals, and load-sensing pilot pressures matching your injection moulding or forming machine. If deadband exceeds OEM spec, we adjust solenoid centering spring preload or replace worn spools — critical for repeat-accuracy in production.
My HMP proportional valve shows erratic pressure oscillation in closed-loop mode. What causes this?+
Oscillation in HMP proportional pressure control typically stems from transducer lag (slow feedback response), proportional solenoid bandwidth mismatch, or pilot stage cavitation. Synchronics checks transducer frequency response (typically 20-40Hz bandwidth), verifies solenoid current rise-time matches your PLC command rate, and inspects pilot inlet filtration. We tune load-sensing margin and proportional amplifier gain if needed, then validate loop stability under full production load.
Can Synchronics repair HMP CAN proportional interface modules or only analog versions?+
We repair both. HMP's newer CAN-based proportional modules (HMP CP-Pro and similar) use integrated CAN transceiver ICs and microcontroller firmware. Synchronics performs CAN protocol testing, ISO 11898 compliance checks, and firmware re-programming if required. We also support legacy analog proportional interfaces. Contact us with your HMP model number and we'll confirm our capability.
How long do HMP proportional solenoid coils typically last in an Indian manufacturing environment?+
In well-maintained systems with good filtration (beta-5 or better), HMP proportional solenoids last 8-12 years. In harsh environments — dusty foundries, high ambient humidity, or systems with contaminated hydraulic fluid — coil life drops to 2-4 years due to moisture ingress and insulation breakdown. Synchronics recommends preventive coil replacement and megohm insulation testing every 18-24 months in critical production lines.
How do I send my HMP unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a HMP drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on HMP repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your HMP unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
HMP Repair Catalog
Showing 1–1 of 1 HMP products
Other Brands We Repair in the Same Categories
Get Your Equipment
Back in Action — Fast
Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service