User Guide

Flowrite EA 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Technical Instructions
Document Number 155-717
July 11, 2011
Siemens Industry, Inc. Page 11
Start-up, continued
When actuator pressure cylinder:
Moves outward (0 to 1): Valve opens.
Normally Closed Valve
Moves inward (1 to 0): Valve closes.
Normally Open Valve
When actuator pressure cylinder:
Moves outward (0 to 1): Valve closes.
Moves inward (1 to 0): Valve opens.
Three Way Valve
When actuator pressure cylinder:
Moves outward (0 to 1): Valve opens between port NC and C.
Moves inward (1 to 0): Valve opens between ports NO and C.
The measuring voltage at terminal U provides valve stem position feedback to an
indicating instrument or building automation system.
Manual operation
180°
1
EA0161R1
1
0
1
0
EA0386R1
MAN
MANUAL AUTO
INDICATOR
0
1
1 x 360°= 2 mm
EA0162R1
Figure 16. SKD Manual Operation.
Turn the manual setting knob clockwise for
manual operation. As you begin to turn, a red
indicator becomes visible. Each complete
revolution (360°) is equal to 3/32-inch (2.5 mm)
stroke.
Figure 15. SKB/C Manual
Operation.
NOTE: If a signal is sent to the actuator while it is in manual operation, the actuator
will move, but the control will not be accurate. The valve cannot be
commanded to its 0% position while in manual operation.