t.a.c. Forta M400A Instructions Manual Download Page 3

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DIM119E

F-27506-1

CONNECTIONS

Block           Function       Description

  G

24  vac          power

  H

24  vac          power

  AI

+

         input signal

  C

-                        signal common

  D1

floating

Extend/

         Retract*

  D2

floating

         Extend/
         Retract*

  AO

+

         feedback sig

*Exact operation will very based on the settings
of DIP switch #1 and #7

Caution: For floating input signals the
cables between the controller and the
Forta should not exceed 328' (100m)
(16 AWG) 

with the cables connected

to

one actuator.

When installed with 3 conductors with
very long lengths (floating control),
where control signal reference is
connected to G, the motor current of
the actuator will cause varying voltage
loss in the cable and thus in the
reference level. Forta which has a
highly sensitive control signal input,
will detect the varying signal and
follow it, which makes it difficult for the
actuator to find a stable position.

Cable Lengths: The wires to G, H
should be max of 328 ft (100m). min
AWG 16, all other proportional input
signal input wires should be a max of
656 ft (200m) min AWG 20.

Please refer to the Wiring Examples

for wiring instructions.

Figure 4

Terminal

block

Summary of Contents for Forta M400A

Page 1: ...throughout stroke Easy One Touch input signal stroke calibration APPLICABLE LITERATURE Forta VB 7xxx Selection Guide F 27490 Forta VB 8xxx VB 9xxx Selection Guide F 27491 AV 811 Linkage VB 7xxx F 27442 AV 812 Linkage VB 8xxx VB 9xxx F 27443 AV 800 Series Linkage Adapters for Competitors Valves F 27470 Stroke 3 8 to 2 9 52mm Stroke Timing Floating 60 or 300 sec selectable Proportional 15 sec 1 2 st...

Page 2: ...h manual override lowered MAN For normal operating the handle must be raised AUTO Position feedback M400A M800A actuators are equipped with a 2 10 vdc position feedback FUNCTION DIMENSIONS The actuator may be mounted horizontally vertically and in any position in between but not upside down see figure 3 Forta M400A M800A actuators mount directly on two and three way VB 7xxx globe valves using the ...

Page 3: ...led with 3 conductors with very long lengths floating control where control signal reference is connected to G the motor current of the actuator will cause varying voltage loss in the cable and thus in the reference level Forta which has a highly sensitive control signal input will detect the varying signal and follow it which makes it difficult for the actuator to find a stable position Cable Len...

Page 4: ...DIM119E 4 10 F 27506 1 WIRING EXAMPLES Figure 6 ...

Page 5: ...5 10 DIM119E F 27506 1 Figure 7 ...

Page 6: ...If SW5 is ON the 5 10 6 10v is selected Note switch 5 is only active if switch 2 is OFF and switch 3 is ON 6 If switch 2 is ON SW6 controls run time SW 6 OFF equals 60 sec ON equals 300 sec run time 7 Direction of movement NORM INV Changes the proportional or floating input signal to direct or reverse action similar to switch 1 8 Linearization SW 8 OFF normal SW8 ON Linear electronic control The m...

Page 7: ...put RA Full open full flow 2vdc output Full closed no flow 10vdc output VB 721x stem down closed OFF OFF ON Retract Full Flow Extend No Flow 10 vdc No Flow 2 vdc Full Flow Valve Type Valve position at low signal input Switch 1 Switch 2 Switch 7 Power up Position Low end of signal input range Feedback signal action port B Table 2 VB 73x3 3 way valves Forta M400A M800A Base Proportional Configuratio...

Page 8: ...tem down closed OFF ON ON Retract Full Flow Extend No Flow Switch 1 CLOSE OPEN Switch 2 CLOSE OPEN of Valve Travel 0 10 20 30 40 50 60 70 80 90 100 Table 3 Auxiliary Switches 2 SPDT Closed Open Closed Open Closed Open Closed Open KC1 K1 X X X X KC1 K2 X X X X KC2 K3 X X X X KC2 K4 X X X X Proportional Control Action Low Signal Input High Signal Input Optional Auxiliary Switch Function S2 Example A...

Page 9: ...e the base programming configuration has been set up you may wish to add additional programming features and functions that are listed below Switch 1 CLOSE OPEN Switch 2 CLOSE OPEN of Valve Travel 0 10 20 30 40 50 60 70 80 90 100 Table 6 Auxiliary Switches 2 SPDT Closed Open Closed Open Closed Open Closed Open KC1 K1 X X X X KC1 K2 X X X X KC2 K3 X X X X KC2 K4 X X X X Floating Control contact mad...

Page 10: ... class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in residential installations This equipment generates uses and can rediate radio frequency energy and may cause harmful interference if not installed and used in acordance with the instructions Even when instructions are followed there is no guarantee...

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