t.a.c. Forta M400A Instructions Manual page 8

Forta Proportional Control Auxiliary Switch (Optional) Setup Reference
Switch 1
Switch 2
% of Valve Travel
With the actuator powered and being controlled by the input signal the optional auxiliary switches only transfer contacts as follows,
driving from full retract to full extend the auxiliary contacts transfer when the actuator is about 95% of full extend travel. When the
actuator drives from full extend to full retract the contacts will transfer when the actuator is about 95% of full retract travel.
Table 3
Auxiliary Switches Program Switch 1off
2 - SPDT
Closed
KC1 - K1
KC1 - K2 X
KC2 - K3 X
KC2 - K4
Proportional Control
Action Program Switches 1 off, 7 off
Low Signal Input
High Signal Input
Note: With power to the actuator off, Auxiliary Switches are made KC1 to K1 and KC2 to K3. Upon power up switches will
make as shown above after auto start up calibration.
Note: This table shows the auxiliary switch action based on the dip switch 1 and 7 settings. You should program the dip switches on the actuator
based on the application requirements, once programmed review this chart to determine the action of the auxiliary switches and wire the switches
accordingly. IF YOU CHANGE EITHER DIP SWITCH 1 or 7 TO GET A DIFFERENT CONTACT CLOSURE YOU WILL CHANGE THE
EXTEND/RETEACT MOVEMENT OF THE ACTUATOR.
VB-72XX Two Way Globe Valve, Forta Floating Control Setup Reference
Table 4
VB-72xx 2 way valves
Valve Type
Valve
position with
D2 powered
VB-722x stem
up closed
VB-722x stem
down open
VB-722x stem
up closed
VB-722x stem
down open
VB-721x stem
up open
VB-721x stem
down closed
VB-721x stem
up open
VB-721x stem
down closed
Programming Note: The above switch positions are the base programming configurations, in the base
configurations all other switches should be switched off. Once the base programming configuration has
been set up you may wish to add additional program features and functions that are listed below.
DIM119E F-27506-1
CLOSE
OPEN
CLOSE
OPEN
0 10 20 30
Optional Auxiliary Switch Function (S2)
Example A Example B
Program Switch 1on
Power Up Power Up
Retracted Extended
Open Closed
X X
X X
Program Switches 1 on, 7 on
Retracts Retracts
Extends Extends
Forta M400A / M800A Base Floating Configuration
Program Switch Position
Power up
Switch 1 Switch 2 Switch 7
OFF ON OFF
OFF ON ON
ON ON ON
ON ON OFF
ON ON ON
ON ON OFF
OFF ON OFF
OFF ON ON
DA = Full open, full flow, 10vdc output / Full closed, no flow, 2vdc output
RA = Full open, full flow, 2vdc output / Full closed, no flow 10vdc output
40 50 60 70 80
Example C
Proportional Control
Program Switch 1off
Power Up
Retracted
Open Closed Open
X
X X
X X
X
Program Switches 1 off, 7 on
Extends
Retracts
Input / Output
Power to Power to
D2 input Feedback D1 input
Position terminal signal terminal
Retract Retract Extend
No Flow No Flow 2 vdc Full Flow
Retract Extend Retract
No Flow Full Flow 10 vdc No Flow
Extend Retract Extend
Full Flow No Flow 10 vdc Full Flow
Extend Extend Retract
Full Flow Full Flow 2 vdc No Flow
Extend Retract Extend
No Flow Full Flow 10 vdc No Flow
Extend Extend Retract
No Flow No Flow 2 vdc Full Flow
Retract Retract Extend
Full Flow Full Flow 2 vdc No Flow
Retract Extend Retract
Full Flow No Flow 10 vdc Full Flow
8 (10)
90 100
Example D
Program Switch 1on
Power Up
Extended
Closed Open
X
X
X
X
Program Switches 1 on, 7 off
Extends
Retracts
Feedback
signal
10 vdc
2 vdc
2 vdc
10 vdc
2 vdc
10 vdc
10 vdc
2 vdc