Spirax Sarco SP500 - Page 48

IM-P343-35 CTLS Issue 5
48
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TRANSLATION RUN OVER
SP500 Electropneumatic Smart Positioner
Installed orientation At-rest position Control action
Manual Selection
of required % travel
(TRAVL)
Automatic determintation
Spring action only affects
the rest or fail-safe position
Manual Selection of required
Control Action
(CTRLA)
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(TR AVL)
0 - 100%
(TR AVL)
100 - 0%
0%
100%
0%
100%
Fig. 65 CTRL Control Action dIRCT or REV setting guidance
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