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INPUT: DIGITAL CONTROL
MODULE (DCM-2)
Beck modulating drives are equipped with a
precision, digital control module (DCM-2) designed
to receive conventional 4–20 mA or 1–5 V dc
control signals directly—eliminating the need for
contact protection devices, relays, switches and
reversing starters.
The DCM-2 modulates the drive output shaft in
response to an analog Demand input signal and is
designed to operate continuously in temperatures
up to 185°F (85ºC).
The DCM-2 provides intelligent calibration,
easy drive setup changes, and diagnostic
information. A Local interface provides quick
pushbutton setup and diagnostics without the
need for a handheld or remote device (see page
23). A HART communications interface allows
remote access of all features and information (see
page 36). A Serial interface also allows for drive
configuration changes, drive information reporting
and to assist in troubleshooting (see page 66).
The DCM-2 permits two or more Beck drives to
be operated by a single signal source. See pages
29 and 57 for details on split range operation.
A square function is available to position the
drive’s output shaft proportionally to the square
of the input signal. This function is factory
configurable (specify at time of order) or may be
configured using the HART interface (see page
46) or Serial interface (see page 70).
DIGITAL CONTROL MODULE (DCM-2)
POSITION
DEMAND
TRQ/THRUST
STALL
FB OPEN
STOP/LIMIT
ACKNOWLEDGE
TEMP F
CALIBRATE
SET POS
100%
SET DEM
100%
SET DEM
0%
SET POS
0%
R
FWD
REV
STAT
PWR