Data Sheet for Product

Technical Instructions SKD6xU Electronic Valve Actuators 24 Vac Proportional Control
Document Number 155-180P25
September 25, 2018
Page 6 Siemens Industry, Inc.
Stroke Calibration,
Continued
Table 1. LED Status.
LED
Display
Function
Action
Green
ON
Normal Operation
Automatic operation
Flashing
Stroke calibration In Progress
Wait for calibration to be
completed (LED stops flashing)
Red
ON
Faulty stroke calibration
Internal Error
- Check mounting
- Restart stroke calibration (by
short-circuiting calibration slot)
- Replace electronics
Flashing
Inner valve jammed
Check the valve
OFF
• No power supply
• Faulty electronics
-Check mains
-Replace electronics
Override Control
The override control input (Z) has three modes of operation:
The Z-modes have a "direct acting" factory setting.