SKP55.001E2 Siemens Controller

Overview

The Siemens SKP55.001E2 is a high-performance electro-hydraulic actuator designed for use with Siemens gas valves. It functions as a differential pressure governor, maintaining a precise 1-to-1 air-to-gas ratio in industrial and commercial burner applications. Engineered for safety and reliability, it provides slow opening and rapid fail-safe closing (under 0.8 seconds) to ensure secure shut-off in the event of power loss. This specific model includes an integrated end switch to signal the valve’s fully closed position, enhancing system supervision.

Features

• Combined safety shut-off and differential pressure regulation in a single compact unit
• Integrated end switch for electrical indication of the fully closed valve position
• 1:1 air/gas ratio control that remains constant across the entire air range
• Automatic compensation for fluctuations in combustion chamber back pressure
• Slow opening and rapid closing (less than 0.8 seconds) for safety
• Visible position indicator and power-on light for easy status monitoring
• Modular design compatible with all Siemens VGG and VGD series gas valve bodies
• 360-degree actuator rotation to simplify field wiring and installation

Specifications

• Model: SKP55.001E2
• Operating Voltage: AC 230 V (+10% / -15%)
• Operating Frequency: 50/60 Hz
• Power Consumption: 13.5 VA
• Duty Cycle: Continuous
• Protection Rating: IP54 (NEMA 1, 2, 5, and 12 for indoor use)
• Ambient Temperature Range: -15 C to +60 C (5 F to 140 F)
• Opening Speed: Approximately 2 mm/s
• Closing Time: < 0.8 seconds
• Weight: Approximately 1.9 kg to 2.1 kg (4.2 lb to 4.6 lb)

Applications

• Forced draft gas burners with mechanical or electronic air/fuel ratio control
• Industrial and commercial combustion plants with combined heat recovery systems
• Burners with adjustable air/fuel mixing devices in the burner head
• Systems where pressure conditions in the burner and combustion chamber do not change in proportion to load
• Industrial boilers, ovens, dryers, and process heating systems requiring safe shut-off and precise pressure regulation