Bosch Rexroth VT-HACD-1-12/V0/1-0-0 R978005518 Axis Controller

Product Overview

Bosch Rexroth VT-HACD-1-12/V0/1-0-0 R978005518 Ruggedized Hydraulic Axis Controller Card for Harsh Industrial Environments

The Bosch Rexroth VT-HACD-1-12/V0/1-0-0 (R978005518) is a high-performance hydraulic axis controller card engineered for continuous, fault-tolerant operation in the most demanding industrial environments. Designed as part of Rexroth’s proven VT-HACD series, this module delivers closed-loop position, velocity, and force control for electrohydraulic servo and proportional valve systems. Its ruggedized construction makes it a trusted choice for engineers and procurement teams operating in high-temperature, high-vibration, dusty, or electromagnetically noisy plant environments where control system reliability is non-negotiable.

Whether integrated into a Siemens S7-300/S7-400 PLC rack, a Rockwell ControlLogix chassis, or a standalone Rexroth IndraControl platform, the VT-HACD-1-12/V0/1-0-0 delivers deterministic axis response with minimal latency. Its analog and digital I/O interfaces allow seamless integration with existing DCS architectures, PROFIBUS-DP networks, and fieldbus-enabled control cabinets without requiring extensive rewiring or firmware reconfiguration.

Rugged Specifications Table

Comprehensive Protection Solutions

The VT-HACD-1-12/V0/1-0-0 does not operate in isolation — it is the axis intelligence at the heart of a broader electrohydraulic control architecture. In a typical heavy-industry control cabinet, this card works in concert with the Rexroth VT-VSPA2-1-1X proportional amplifier card, which conditions valve command signals and provides integrated ramp and dither functions. Upstream, a Rexroth VT-SR2-1X/V0 safety relay module monitors enable signals and provides STO (Safe Torque Off) equivalent hydraulic shutdown capability, ensuring the axis can be safely de-energized without full system power-down.

For power conditioning in environments with unstable grid supply — common in mining substations and offshore platforms — the Rexroth PSL 24/10 industrial power supply provides regulated 24 V DC with active PFC and surge protection, safeguarding the VT-HACD card and co-located I/O modules from voltage transients. The card’s analog command inputs are typically driven by a Siemens SIMATIC ET 200SP analog output module or a Rexroth IndraControl XM22 motion controller, both of which provide the high-resolution setpoint signals required for precision axis positioning.

In multi-axis hydraulic press applications, the VT-HACD-1-12/V0/1-0-0 is frequently paired with Rexroth VT-HNC100 hydraulic axis computers for master-slave synchronization across parallel cylinders. Communication between the axis controller and the supervisory PLC is often handled via PROFIBUS-DP terminal modules or Rexroth R-IB IL 24 DI 8/HD-PAC inline digital input modules, which aggregate field signals and relay them over the fieldbus backbone with deterministic cycle times. For installations requiring functional safety certification, the Rexroth VT-MSPA1-1 safety card can be integrated alongside the VT-HACD to provide SIL 2-capable monitoring of axis position limits and overspeed conditions.

Terminal wiring within the control cabinet is typically managed through Phoenix Contact PTFIX or Weidmüller WDU 2.5 terminal blocks, which provide organized, vibration-resistant connections between the VT-HACD card’s I/O connectors and field instrumentation such as linear position transducers (LVDTs), pressure transducers, and proportional valve solenoids.

Application in Critical Infrastructure

The VT-HACD-1-12/V0/1-0-0 has established a strong track record across critical infrastructure sectors where hydraulic axis control is fundamental to process integrity and personnel safety.

Steel and Metals Processing: In continuous casting lines and rolling mills, this controller card manages the position of hydraulic gap control (HGC) cylinders with sub-millimeter accuracy, directly influencing strip thickness and surface quality. The card’s robust EMC shielding allows it to operate reliably adjacent to large AC drives and transformer banks that generate significant electromagnetic interference.

Oil, Gas, and Offshore: On offshore drilling platforms and FPSO vessels, the VT-HACD series controls hydraulic actuators for blowout preventer (BOP) systems, riser tensioners, and mooring winches. Its wide operating temperature range and resistance to salt-air corrosion (when cabinet-mounted with appropriate IP-rated enclosures) make it suitable for topside and subsea control panel applications.

Mining and Mineral Processing: In longwall mining systems and ore processing plants, the card controls hydraulic roof supports, conveyor tensioners, and crusher feed gates. The dusty, high-vibration environment of underground mining demands the kind of robust signal processing and noise immunity that the VT-HACD architecture provides.

Power Generation and Water Treatment: Hydraulic turbine governors in hydroelectric plants and hydraulic actuators on large gate valves in water treatment facilities rely on precise, repeatable axis control. The VT-HACD-1-12/V0/1-0-0 provides the closed-loop stability required for these slow-moving but safety-critical applications, where a control fault could result in uncontrolled water flow or turbine overspeed.

Injection Molding and Plastics: High-tonnage injection molding machines use hydraulic clamping and injection axes that demand fast, accurate pressure and position control. The VT-HACD card’s high-speed control loop enables short cycle times while maintaining consistent shot weight and clamp force, reducing scrap rates and improving OEE.

Security & Quality FAQ

Q1: What does the 12-month warranty cover, and how is it enforced?
All VT-HACD-1-12/V0/1-0-0 R978005518 units supplied by TOPNLMS carry a 12-month warranty covering manufacturing defects and functional failure under normal operating conditions. If a unit fails within the warranty period, we provide a replacement or full refund after fault verification. Warranty claims are processed within 5 business days of receiving the returned unit.

Q2: How is each unit tested before shipment?
Every unit undergoes pre-shipment functional inspection including power-on verification, I/O continuity checks, and visual inspection for physical damage, connector integrity, and component condition. Units sourced from OEM-authorized channels are cross-referenced against Rexroth material numbers to confirm authenticity. A test report is available upon request for critical infrastructure procurement.

Q3: Is this card compatible with my existing Rexroth VT-HACD system or third-party PLC?
The VT-HACD-1-12/V0/1-0-0 is a direct form-fit-function replacement for other VT-HACD-1-12 series variants with matching firmware revision V0. It is compatible with standard 24 V DC industrial control systems and interfaces with analog command sources from Siemens SIMATIC, Rockwell ControlLogix, Mitsubishi MELSEC, and other major PLC platforms via ±10 V analog setpoint inputs. Always verify the valve driver output current range matches your proportional valve solenoid specification before installation.

Q4: Can TOPNLMS support long-term supply and emergency replacement needs?
Yes. TOPNLMS maintains stock of VT-HACD series cards and related Rexroth hydraulic control components to support both planned maintenance schedules and emergency breakdown situations. We offer expedited shipping from Xiamen, China, with DHL Express and FedEx International Priority options for next-business-day delivery to most industrial regions. For critical spares programs, contact our team to discuss consignment stock or priority reservation arrangements.