Rexroth GIV50-11 / R900174537 / R901465833 — Valve Position Switch Sensor

Bosch Rexroth · GIV Series · Hydraulic Valve Position Monitor · In stock · Worldwide Shipping

The Rexroth GIV50-11 is an inductive valve position switch and monitor from Bosch Rexroth, designed to detect the spool position of 4/3 and 4/2 hydraulic directional control valves in real time. The two catalog material numbers R900174537 and R901465833 cover the standard and the extended temperature variants of the same GIV50-11 form factor. KOEED sources genuine Rexroth hydraulic feedback sensors for legacy repair, line retrofits and factory automation projects, sitting alongside the core Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE PLC, servo and CNC lines. Send your BOM to Moritta@KOEED.COM and we will reply with availability and lead time within 24 hours.

Key Technical Specifications

The GIV50-11 sits inside Rexroth's GIV family of contactless position-feedback devices for hydraulic valves. It outputs a binary signal as soon as the valve spool reaches its commanded end position, which makes it a true closed-loop position indicator rather than a simple mechanical limit switch. The table below is the engineering snapshot most often requested by maintenance engineers and system integrators.

Application Scenarios & Where It Fits

The GIV50-11 is a position-feedback device, not a controller. Its job is to tell the upstream PLC — whether that is a Siemens SIMATIC, an Allen-Bradley ControlLogix or a Mitsubishi MELSEC — that the hydraulic valve has actually reached the commanded position before the next machine motion is allowed. Without that feedback the PLC would be commanding motion blind, which is unacceptable in any safety-relevant cell. Typical deployments:

• Injection molding machines — confirms clamp and ejector valve position before mold-close or mold-open transitions.
• Die casting and forging presses — interlock for high-tonnage presses, with the GIV50-11 wired into the press safety chain.
• Machine tools and CNC hydraulics — turret, tailstock and chuck position confirmation paired with Fanuc and Yaskawa servo axes.
• Marine and offshore hydraulics — deck machinery, winch control valves and bow-thruster actuators.
• Mobile hydraulics and heavy equipment — loaders, excavators and harvesters where a contactless sensor survives vibration better than a mechanical limit switch.
• Steel, paper and process plants — hydraulic roll positioning, tension control and shear actuation, typically integrated with Schneider Modicon or Omron SYSMAC PLCs.
• Press shop and body-in-white — end-of-stroke verification on forming and welding cells, often alongside KEYENCE vision inspection and Panasonic FP PLCs.

Integration & Wiring Notes

The GIV50-11 uses a four-pin M12 connector, which is the de-facto standard for NAMUR-style valve feedback in European hydraulic cabinets. Pin-out, supply polarity and shielding should be cross-checked against the wiring diagram in the Rexroth data sheet before commissioning — the sensor is polarity-sensitive. Common integration points engineers ask about:

• Pin 1 (+UB) and Pin 3 (0 V): 24 V DC supply, typically drawn from the same power distribution that feeds the PLC digital input card. Add a dedicated 24 V branch if the cabinet shares a noisy bus.
• Pin 4 (output A) and Pin 2 (output B): one output per spool end-position. Wire each to a dedicated PLC fast input when the GIV is part of a safety chain.
• Cable routing: keep the M12 lead at least 100 mm away from variable-frequency drive power cables (Schneider Altivar, Yaskawa Varispeed, Allen-Bradley PowerFlex) to avoid coupling noise into the inductive sense element.
• Shielding: if the M12 cable is shielded, ground the shield at the cabinet end only — do not loop the shield to ground at the valve end as well, otherwise ground loops will inject false triggers.
• PLC interface card: any standard 24 V sinking digital input works. For NAMUR intrinsic safety or long cable runs, use a dedicated NAMUR input module or a barrier from the PLC error code lookup reference list.
• Diagnostic feedback: a healthy GIV50-11 shows a clean on/off transition when the spool is commanded. A chattering or sticky output is almost always a wiring or supply issue, not a sensor failure — check the 24 V rail before replacing the unit.

Installation & Commissioning Tips

The GIV50-11 is a fit-and-forget device when mounted correctly. The most common field failures we see on incoming warranty units are mechanical, not electrical: the sensor has been torqued out of spec, or the M12 has been hand-crimped without proper strain relief. A clean install looks like this:

• Verify the form factor first. The GIV50-11 mounts only on Rexroth valves with the matching GIV50 mechanical interface. Use the manufacturer's selection tool if you are retrofitting a non-Rexroth valve — the sensor expects a specific spool stroke window to detect position reliably.
• Torque the clamp to spec. Over-tightening distorts the housing and shifts the inductive sense element out of alignment. Use a torque wrench and follow the Rexroth data sheet value (typically a modest single-digit N·m figure).
• Hand-tighten the M12 connector. Do not use pliers or channel-locks on the M12 coupling nut — a quarter-turn past hand-tight is the correct seating torque. A crushed coupling nut is the second most common field failure we see.
• Power up and observe both outputs. With 24 V applied, the GIV50-11 will show a steady state per spool position. Manually command the valve from the PLC and watch each output toggle cleanly.
• Verify the safety chain end-to-end. If the GIV is wired into a press safety circuit, do not trust the green light alone — force a fault condition (e.g. disconnect the M12) and confirm that the upstream PLC actually drops out within its rated response time.
• Log commissioning data. Stamp the install date on the sensor body with a permanent marker and record the part number, material number and valve serial in your CMMS. This makes future AI-assisted diagnostics and cross-referencing much faster.

Procurement, Warranty & Lead Time

R900174537 and R901465833 are ordered through Rexroth's normal channel rather than picked off the shelf of a generic electronics distributor, which is why so many maintenance teams end up waiting weeks when they go direct. KOEED's China sourcing team keeps both catalog numbers on the shelf for fast ship-out, alongside the rest of the GIV family. A typical procurement cycle:

• RFQ turnaround: 24 hours on business days. Send the material number, quantity and target ship-to country to Moritta@KOEED.COM and we will come back with availability, lead time and freight options.
• Lead time: in-stock units ship within 1–3 business days via DHL, FedEx or UPS. Out-of-stock or large-volume orders are quoted on a per-case basis against the live supplier lead time.
• Full BOM quotations: if you are also replacing the upstream PLC, the HMI, the servo drive or any of the related valve accessories, send the entire instruments list. We will quote the lot in one pass — including Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE parts when they appear on the same BOM.
• Warranty: 12-month limited warranty against manufacturing defect. Sensors damaged by fluid ingress, mechanical impact, mis-wiring or operation outside the published electrical envelope are not covered — install per the data sheet and you are covered.
• Worldwide shipping: DHL, FedEx, UPS and standard air freight. We do not publish fixed prices on the web — every quote is built around your actual ship-to country, quantity and desired Incoterm. Request a quote via Create a Quote or by emailing the BOM to our RFQ inbox.

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