Description
Product Introduction
Voith DSG-B05243 is an electro-hydraulic current-to-pressure converter used in steam turbine and compressor governing systems. It transforms a standard 4–20 mA control signal from the electronic governor into a proportional hydraulic pressure that drives the actuator or pilot valve controlling the steam admission valve.
The compact, sealed design delivers high accuracy and virtually zero hysteresis. Mean time between failures exceeds 600 years in theoretical calculation, making these units preferred for continuous-duty turbine installations. The module operates on 24 V DC and requires clean hydraulic oil to the specified cleanliness class.
Installation & Configuration Guide
Phase 1 — Pre-Installation (est. 10 min)
De-energize electrical supply and isolate hydraulic lines. Wait for residual pressure to drop. Tools: ESD wrist strap, multimeter (Fluke 115), pressure gauges, clean hydraulic fittings. Photograph existing piping, electrical connections and mounting orientation.
Phase 2 — Removal (est. 5 min)
Label electrical and hydraulic lines. Disconnect the 4–20 mA signal, 24 V DC supply and hydraulic ports. Unbolt the unit from its mounting plate.
Phase 3 — Installation (est. 10 min)
Verify the part number DSG-B05243. Mount the converter in the same orientation. Connect hydraulic supply (P), actuator (A) and tank (T) ports with clean fittings. Wire the 24 V DC supply and 4–20 mA signal, observing polarity. Ensure oil cleanliness meets specification before pressurizing.
Phase 4 — Power-On & Testing (est. 15 min)
Apply 24 V DC and hydraulic pressure. Verify zero and full-scale output pressure against the 4–20 mA command. Check for leaks and stable regulation. Run a functional test of the associated turbine valve loop for >30 min and log the change.
Troubleshooting quick-reference:
- No output pressure → check 24 V supply, input signal and pilot oil pressure
- Slow response → verify oil viscosity, cleanliness and filter condition
- Offset or drift → confirm signal grounding and oil temperature
