t.a.c. Forta M400A Instructions Manual page 2

DIMENSIONS
Dimensions: in. (mm)
FUNCTION
The actuator
The brushless DC-motor of the actuator
turns a screw via a gear wheel. The motor
receives a control signal from a controller.
The screw gets a linear movement which
moves the stem of the valve.
Control signal
M400A / M800A can be controlled by a
SPDT floating control, Triac source
controller or a proportional input signal.
MOUNTING
The actuator may be
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 AV-811 linkage
kit.
The M800A may be mounted on VB-
9313-0-5-xx valves using AV-812 linkage
kit.
Either linkage kit must be ordered
separately. Please refer to F-27442 for
AV-811 mounting instructions and to
F-27443 for AV-812 mounting
instructions.
DIM119E F-27506-1
Manual operation
There is a red 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.
ATTENTION: actuators is shipped with
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.
mounted
2 (10)
Figure 1
Figure 2
Red Manual
Operation
Handle raised
(AUTO)
Red Manual
Operation
Handle lowered (MAN)
Figure 3