+GF+ RPC D/PID Manual De Instrucciones página 20

Type RPC D/PID positioner
NOTE!
► "At rest" means that the control valves of the RPC positioner type are de-energized or not actuated.
► With humid ambient air, a hose connection can be established between control air output A1 or A2 of the positioner/process
controller and the control air connection of the actuator which is not connected with control function FC or control function FO,
respectively. This supplies the spring chamber of the actuator with dry air from the vent duct of the RPC positioner type.
4.4.1 Safe end position
The safety end position after failure of the auxiliary electric power depends on the pneumatic connection of the actuator to the wor-
king ports A1 or A2.
Drive type Designation
Single-acting
up
Control function FC
down
Single-acting
Control function FO
up
down
obere
Kammer
untere
Double-acting
Kammer
Control function DA
up
down
4.4.2 Standard: Use of positioner port A1
Type Positioner Pneumatic actuator Positioner Pneumatic actuator
Connection 1 Port RIGHT
FC A1 OPEN
FO A1 CLOSE
DA A1 OPEN
4.4.3 Special variant: Use of positioner port A2
Type Positioner Pneumatic actuator Positioner Pneumatic actuator
Port 1 Port LEFT
FC - -
FO - -
DA A1 CLOSE
20
Safety end positions after failure of the auxiliary power Pneumatic
down
Connect working connection
A1 to actuator
Close A2
Connect working connection A1 and A2 to actuator
up = lower
Chamber of the actuator at
A2
Port 2 Port LEFT
- -
- -
A2 CLOSE
Port 2 Port RIGHT
A2 OPEN
A2 CLOSE
A2 OPEN
A2
A1
up
Connect working connec-
tion A2 to actuator
Close A1
down = upper
Chamber of the actuator at
A2
Basic Position
Position Pneumatic
actuator
CLOSE
OPEN
CLOSE
Basic Position
Position Pneumatic
actuator
OPEN
CLOSE
OPEN
Operating Instructions
down
up
Undefined
Positioner value
4mA
4mA
4mA
Positioner value
4mA
4mA
4mA