SKD6xU Electronic Valve Actuators 24 Vac Proportional Control Technical Instructions
Document Number 155-180P25
February 28, 2018
Siemens Industry, Inc. Page 3
Accessories
NOTE:Installation instructions are included with each accessory.
Figure 1. Auxiliary Switch.
ASC1.6 Auxiliary switch.
Sends a signal to indicate the valve is in
the 0% stroke position. Switching point is
fixed at the 0% stroke position.
Switching capacity 24 Vac
4A resistive
2A inductive
Lowest recommended
current 10 mA
Figure 2. Packing Heating Element.
599-00417 Packing heating element.
Allows stem to move freely in valves
controlling fluids at temperatures below
32°F (0°C). Reduces ice crystal formation
on the stem which may damage the
packing.
Operating Voltage 24 Vac
Heating Output 20 W
Figure 3. Weather Shield.
599-10071 Weather Shield.
See Service Kits for replacement ultraviolet
resistant cable ties.
Service Kits
The only field serviceable part is the circuit board.
Circuit board replacement 4-668-5748-8
Plastic wiring compartment cover 4-104 5634-8
Manual Override Kit for SKD 4-268 5504-8
Ultraviolet (UV) resistant cable ties (pkg. of 10) 538-996
WARNING:
This product contains a spring under high compression. Do not attempt to
disassemble the actuator.
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