This document is about Siemens Building Technologies HVAC products AP1N4561zh. The product is an electric hydraulic valve actuator with a stroke of 20mm. The operating voltage of the actuator varies depending on the model and can be AC 230V, AC 24V, DC 0–10V, 4–20mA or 0–1000Ω. The actuator has various functions including valve position feedback, stroke calibration, LED status indication, and priority control. It also features direction selection, stroke limit control, and adjustable starting point and stroke range for sequential control. The actuator is suitable for Siemens VVF and VXG series valves, used as control valves or safety shut-off valves in HVAC systems.
This manual provides detailed information for the SKD32, SKD82, SKD62 and SKD60 electric hydraulic valve actuators, including model overviews, electrical specifications, installation steps, and adjustment procedures. It also covers optional accessories, safety notes, and troubleshooting tips for HVAC applications.
The document explains the spring‑reset function, LED status indicators, additional frost‑protection signals, and how to configure action direction, travel limits and sequence control using the built‑in dip switches. This manual is written in Chinese.
| SKD32 operating voltage | AC 230 V |
|---|---|
| SKD82 operating voltage | AC 24 V |
| SKD62 operating voltage options | AC 24 V, DC 0‑10 V, 4‑20 mA or 0‑1000 µA |
| Maximum drive torque | 1000 N |
| Travel range | 20 mm |
The SKD32 actuator operates on AC 230 V.
The SKD62UA can use the QAF21 and QAF61 signals for frost‑protection monitoring.