Key Technical Specifications

• Product Model: AVM234SF132
• Manufacturer: SAUTER Controls
• Motor Type: Stepper motor with SUT electronic control unit
• Power Supply: 24 V AC / 24 V DC (230 V available with module)
• Thrust Output: 2500 N
• Valve Stroke Range: Automatic adaptation from 8 mm to 49 mm
• Control Signal: Constant (0–10 V, 4–20 mA) or Switching (2-point, 3-point)
• Valve Compatibility: VQD/BQD, VQE/BQE, VUG/BUG, VUS/BUS, VUP, V6R/B6R
• Manual Override: Crank handle with motor cut-off and re-initialization trigger
• Protection Rating: Up to IP66
• Operating Temperature: -20°C to +55°C
• Electrical Connections: Screw terminals (max 2.5 mm²)

 

Product Introduction

The SAUTER AVM234SF132 is an electronic stepper motor valve actuator designed for precise positioning of 2-way and 3-way control valves in HVAC and industrial systems. It features SAUTER Universal Technology (SUT) to automatically detect control signals and adapt to valve stroke lengths without manual calibration.This actuator delivers a constant 2500 N thrust to overcome unbalanced media forces accurately. Field testing shows that its patented spindle auto-connection mechanism reduces installation time by eliminating complex mechanical linkages, while saving stroke data prevents recalibration after power loss.

Installation & Configuration Guide

Preparation (10 min)
Verify the power supply matches the actuator rating (24 V AC/DC). Identify the valve stem stroke length to ensure it falls within the 8–49 mm range. Gather the appropriate adapters if mounting to a non-SAUTER valve.Removal (5–10 min)
Disconnect the control voltage and signal wiring. If replacing an existing unit, loosen the mounting bracket bolts and slide the actuator off the valve stem. Inspect the valve stem for corrosion or damage before proceeding.Installation (10 min)
Place the AVM234SF132 onto the valve stem and secure the cast light alloy mounting bracket. Apply the control voltage to trigger the patented auto-connection system, which automatically engages the spindle. Use the coding switches to set the characteristic type (linear, quadratic, or equal-percentage).Power-On & Test (10 min)
Restore power and observe the dual LED indicators, which confirm whether a constant or switched signal is detected. Use the crank handle to trigger a re-initialization cycle if necessary. Verify full stroke travel and check for abnormal noise.

 

Troubleshooting Quick Reference

• Actuator fails to auto-connect: Ensure control voltage is applied. The patented spindle connection only engages when power is present.
• Valve does not reach full stroke: Check the coding switch settings. Verify the valve stroke is within the 8–49 mm limit and that the correct flow characteristic is selected.
• LEDs indicate signal mismatch: Confirm the controller output matches the actuator setting (0–10 V/4–20 mA vs. 2-point/3-point). The LEDs automatically detect this discrepancy.
• Excessive operating noise: Inspect the valve stem for binding or lack of lubrication. The actuator’s force-dependent cutoff may be repeatedly triggering due to mechanical friction.
• Position lost after power outage: Stroke data is normally saved in non-volatile memory. If lost, use the external crank handle to trigger a full re-initialization cycle.

Dimensions, Mounting & Wiring Notes

• Mounting Orientation: Vertical upright to horizontal only. Suspended mounting is strictly prohibited.
• Cable Entries: Three pre-scored inlets (2× M20 × 1.5, 1× M16 × 1.5).
• Terminal Notes: Use screw terminals rated for max 2.5 mm² wire. Ensure operation direction is correctly selected via terminals during wiring.
• Mechanical Interface: Stainless steel mounting column with cast light alloy bracket. Numerous adapters available for non-SAUTER valves.

 

FAQ

Can I mount this actuator upside down?
No. The AVM234SF132 is rated for vertical upright to horizontal installation only. Suspended mounting will compromise the gear unit and void the warranty.I noticed the spindle didn’t click into place during installation. What now?
The auto-connection requires live control voltage to engage. Double-check your 24V supply. If it still fails, manually verify the valve stem isn’t bent or obstructed.Is this compatible with my Siemens or Belimo valves?
Yes, but you will need specific adapters. While designed for SAUTER VQD/VQE series valves, SAUTER provides numerous adapters to fit non-SAUTER control valves.Do you offer volume discounts for facility retrofits?
Yes. We provide tiered pricing for bulk procurement. Contact our sales team with your exact quantity and required lead time for a formal quote.What happens if the valve gets mechanically stuck?
The actuator features an electronic, force-dependent cutoff. It will automatically cut power to the motor if safety torque limits are exceeded, preventing gear damage.How do I change the control signal type?
The actuator automatically detects constant (0–10 V, 4–20 mA) or switching (2-point, 3-point) signals, indicated by two LEDs. For specific characteristic tuning, use the physical coding switches on the housing.Can I manually adjust the valve during a power failure?
Yes. The unit includes a crank handle for external manual adjustment. This handle also cuts off the motor and serves as a trigger for re-initialization when power is restored.