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0-003-2060-1 (EN)

6 (6)

ACTUATOR INSTALLATION

The switches on the circuit board
should be set before the actuator is
installed. There are no other switches
or potentiometers that should be set or
adjusted.

To make an end position adjustment,
you only have to switch the switch
»OP/ADJ« into its ADJ position, when
the supply voltage has been turned on,
and then back to its OP position.

When an end position adjustment is
made, Forta closes the valve and opens
it fully.  The adjustment is finished by
the actuator closing the valve again; the
electronic circuitry then adjusts the
stroke and the running time to the
valve.  The set values are stored in the
EEPROM of the actuator so that they
will remain after a loss of voltage.

When the end position adjustment is
complete, the actuator starts to control
the valve according to the control
signal.

MAINTENANCE

The actuator is maintenance-free.

ACCESSORIES

Circuit board, M400 ............................................................................... 1-001-0671-0
TAC Forta Handbook (GB) ...................................................................... 0-004-7804
S2-Forta ............................................................................................... 880-0104-000

TAC AB, Jägershillgatan 18, SE-213 75  MALMÖ, SWEDEN, +46 40 38 68 50 (switchboard), www.tac.com

Summary of Contents for Forta M400

Page 1: ... by 24 V AC It can provide 16 V DC voltage supply for older TAC controllers Actuator for Valves G 40 22 11 Jun 2003 TECHNICAL DATA M400 Part numbers see the table on the next page Supply voltage 24 V AC 10 50 60 Hz Power consumption average 6 VA Transformer sizing 30 VA Running time Modulating 60 s Increase decrease 300 s 60 s Stroke 10 32 mm 0 39 1 26 in Factory set stroke 20 mm 0 79 in Thrust 40...

Page 2: ...moves inwards on an increase signal and outwards on a decrease signal see Settings Manual operation There is a manual operation handle on the actuator see figure 2 When it is lowered the motor stops Then the actuator can be operated manually if the handle is turned Position feedback Forta actuators are equipped with a 2 10 V DC position feedback signal where 2 V always corresponds to the closed po...

Page 3: ...allations on the following conditions the cables between the controller and actuator are shorter than 100 m 328 ft the cross sectional area is larger than 1 5 mm2 AWG 16 and the cables are only connected to one actuator Please refer to the figures labelled Simplified installation for wiring instructions Cable lengths The cables to G G0 and G1 should be max 100 m 328 ft and have a cross sectional a...

Page 4: ...ta Controller Normal installation 4 wires to the actuator Short cable installation 3 wires to the actuator Forta Controller Forta Controller Normal installation 5 wires to the actuator Short cable installation 4 wires to the actuator Forta Controller Forta Controller Normal installation 5 wires to the actuator PU unit installation 4 wires to the actuator Control cabinet 0 V 24 V AC G0 G K1 K2 KC G...

Page 5: ...age range to use the upper one 6 10 V 5 10 V or the lower one 2 6 V 0 5 V If the switch is in the NORM position the higher voltage corresponds to 0 and the lower one to 100 To achieve the opposite function the switch should be put in its INV position Running time 60 s 300 s During increase decrease control you can choose between 60 s or 300 s running time During modulating control the running time...

Page 6: ...e valve and opens it fully The adjustment is finished by the actuator closing the valve again the electronic circuitry then adjusts the stroke and the running time to the valve The set values are stored in the EEPROM of the actuator so that they will remain after a loss of voltage When the end position adjustment is complete the actuator starts to control the valve according to the control signal ...

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