Direction Of Action - Samson TROVIS 5757-3 Configuration Manual

Functions and parameters

2.9 Direction of action

Increasing/increasing (F04 - 0)
− Actual value < Set point: Actuator stem retracts
− Actual value > Set point: Actuator stem extends
Increasing/decreasing (F04 - 1)
− Actual value < Set point: Actuator stem extends
− Actual value > Set point: Actuator stem retracts
Actuator stem extended
− With globe valves: Valve CLOSED
− With three-way mixing valves: Port A à AB open, B à AB closed (see Fig. 2)
− With three-way diverting valves: Port AB à A closed, AB à B open
Actuator stem retracted
− With globe valves: Valve OPEN
− With three-way mixing valves: Port A à AB closed, B à AB open (see Fig. 2)
− With three-way diverting valves: Port AB à A open, AB à B closed
Mixing valve for mixing service
Flow pipe
Return flow pipe
Fig. 2: Principle: mixing service
Functions
F04: Direction of action
12
AB
A
B
A AB
B
AB
A
B
Diverting valve for mixing service
Flow pipe
A
Return flow pipe
B
AB
AB A
B
WE Configuration
0 F04 - 0: >> (increasing/increasing)
F04 - 1: <> (increasing/decreasing)
AB
A
B
KH 5757 EN
A
AB
B
A
AB
B