User Guide
Schneider Electric 1354 Cliffo rd Ave. Loves Park, IL 61111 1-888 - 44 4 -1311 w ww.schneider-electric.co m / buildings
F-27599-4 March 2011 co
© 2011 Schneider Electric. All rights reserved.
Globe Valve Actuators & Assemblies
Forta
6
PROGRAM SWITCH SETTINGS FOR THE FORTA NONSPRING RETURN ACTUATORS
Switch Set-
ting
Description O Position
1
On Position
1 Valve closing screw direction After power up, actuator will retract fully before the
input control signal takes control. This switch will change
the proportional or oating input signal to direct or
reverse action similar to switch 7.
After power up, actuator will extend fully before the input
control signal takes control. This switch will change the
proportional or oating input signal to direct or reverse action
similar to switch 7.
2 Control mode
Proportional signal Floating signal
3 Sequence operation
2
Normal operation SW 2 o , SW 3 on, SW 4 select base range (0-10 or 2-10) SW 5
select sequence range
4 Input voltage range
0 to 10 Vdc 2 to 10 Vdc
5 Working voltage range
3
0 to 5 Vdc
or
2 to 6 Vdc
5 to 10 Vdc
or
6 to 10 Vdc
6 Running time
( oating control only)
60 sec 300 sec
7 Direction of movement This switch will change the proportional or oating input
signal to direct or reverse action similar to switch 1.
This switch will change the proportional or oating input
signal to direct or reverse action similar to switch 1.
8 Linearization
Normal
Used to adjust the actuator’s linear or logarithmic characteris-
tics. With this setting, the characteristics of an equally modi-
ed percentage valve can be modi ed to almost linear and
a linear valve can operate with “quick open” characteristics
based on the application requirements.
9 Input signal/ Stroke Calibration Normal Used to calibrate the input control signal and the valve
stroke. With the actuator powered, turn switch nine on, then
o . The actuator will match the control input signal to the
valve stroke. Note: Switch 9 must be in the o position for
normal operation.
1 Units are shipped with all nine switches in a default “o ” position.
2 Switch 3 must be in the o position if sequence control is not used.
3 Switch 5 is only active if switch 2 is o and switch 3 is on.
Note: For the actuator to register new settings of the switches, the supply voltage must be removed by cutting power to the actuator or
lowering the manual override lever, then change any of switches one through eight as required and then restore power to the actuator or
raise the manual override level.
1
2
3
4
56
7
8
9
IN
OUT
Proportional
Floating
Sequence
0-10
2-10
0-5, 2-6
5-10, 6-10
60 sec.
300 sec.
Normal
Inverse
Normal
LIN/LG
OP ADJ
OFF
ON