t.a.c. Forta M400A Instructions Manual page 9

VB-73XX Three Way Globe Valve, Forta Floating Control Setup Reference
Table 5
VB-73x3 3 way valves
Valve Type Program Switch Position
Valve position with
D2 powered Switch 1 Switch 2 Switch 7
VB-731x stem up
OFF
open B to AB
VB-731x stem down
OFF
closed B to AB
VB-731x stem up
ON
open B to AB
VB-731x stem down
ON
closed B to AB
VB-732x stem up flow
OFF
B to AB
VB-732x stem down
OFF
flow B to A
VB-732x stem up flow
ON
B to AB
VB-732x stem down
ON
flow B to A
Programming Notes: 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 programming
features and functions that are listed below.
Forta Floating 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 6
Example A
Auxiliary Switches Program Switch 1off
2 - SPDT Powered
Retracted
Closed
KC1 - K1
KC1 - K2 X
KC2 - K3 X
KC2 - K4
Floating Control Program Switches 1off, 7off
(contact made)
D1 action Extends
D2 action Retracts
Note: With power to the actuator off, Auxiliary Switches are made KC1 to K1 and
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/RETRACT MOVEMENT OF THE ACTUATOR.
Forta M400A / M800A Base Floating Configuration
Power up
Position
Retract Full
ON OFF
Flow B to AB
Retract Full
ON ON
Flow B to AB
Extend Full
ON OFF
Flow A to AB
Extend Full
ON ON
Flow A to AB
Retract Full
ON OFF
Flow B to AB
Retract Full
ON ON
Flow B to AB
Extend Full
ON OFF
Flow B to A
Extend Full
ON ON
Flow B to A
CLOSE
OPEN
CLOSE
OPEN
0 10 20 30 40
Optional Auxiliary Switch Function (S2)
Example B
Program Switch 1on
Powered
Extended
Open Closed Open
X X
X X
Program Switches 1on, 7on
Extends
Retracts
9 (10)
Desired Valve Operations
Power to D2 Feedback Power to D1
input terminal signal input terminal
Retract Full Extend No Flow
Flow B to AB 2 vdc B to AB
Extend No Flow Retract Full Flow
B to AB 10 vdc B to AB
Extend No Flow Retract Full Flow
B to AB 2 vdc B to AB
Retract Full Flow Extend No Flow
B to AB 10 vdc B to AB
Retract Full Flow Extend No Flow
B to AB 2 vdc B to AB
Extend No Flow Retract Full Flow
B to AB 10 vdc B to AB
Extend No Flow Retract Full Flow
B to AB 2 vdc B to AB
Retract Full Flow Extend No Flow
B to AB 10 vdc B to AB
50 60 70 80
Example C
Floating Control
Program Switch 1off
Powered
Retracted
Closed Open
X
X X
X X
X
Program Switches 1off, 7on
Retracts
Extends
KC2 to K3. Upon power up
Feedback
signal
10 vdc
2 vdc
10 vdc
2 vdc
10 vdc
2 vdc
10 vdc
2 vdc
90 100
Example D
Program Switch 1on
Powered
Extended
Closed Open
X
X
X
X
Program Switches 1on, 7off
Retracts
Extends
F-27506-1 DIM119E