Technical Instructions SKD6xU Electronic Valve Actuators 24 Vac Proportional Control
Document Number 155-180P25
February 28, 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.
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