ATC770 Microprocessor-Based Pressure/Process Controller 17
CnCt
. It will increase the set point in a linear fashion (about 20 seconds from 0 to
100% output).
Digital Input 3 (DIG3) is available only when the Group 1 function
A/M
is changed from
LoCAL
to
CnCt
. It will decrease the set point in a linear fashion (about 20 seconds from
100% to 0 output).
Digital Input 4 (DIG4) is available at all times. It switches the controller from Automatic to Manual
and sets the control output to zero. It also inhibits keyboard control of switching
from Automatic to Manual, but allows keyboard increase of the output value.
NOTE: A dry contact switch or relay must be fitted between terminal 62 (Common) and terminal 63
(Digital Input 1 Remote AUTO/MAN) to enable the use of Digital Input 2 (DIG2) and Digital
Input 3 (DIG3) (Control output value increase and decrease).
3.0 UNPACKING
Upon receipt, examine the package for shipping damage. Notify the carrier immediately in the event
of any evidence of damage, and retain the shipping materials for their inspection. The package
should contain the instrument, two panel mounting brackets, a sheet of peel-off labels with a variety
of engineering units and an
Installation and Operation Manual
.
3.1 DIMENSIONAL INFORMATION
Dimensions: 3.78" X 3.78" X 6.01" overall (96mm X 96mm X 143.5mm)
Cutout: 3.62" X 3.62" (92mm X 92mm)
Depth behind panel: 5.04" (128mm)
Weight: 1.43 lbs. (650g)
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