Drive Control
DC RS alpha
Issue 09/99
27
The most important features
• Smart drive controller with integrated mini-PLC for DC-motors
• Continuous motor current 5 A
• Maximum motor current 10 A
• 5 digital inputs incl. 1 fast counter input up to 1 kHz
• 3 potentiometers
• Ramp function at start/stop
• Pre-programmed for standard functions: stop, counter-clockwise, clockwise,
quick stop
• Application specific adaptation of software functions possible with BeCon
(acc. to IEC 1131)
Description
The drive controller DC RS alpha is placed on a circuit board without housing.
The circuit board can be installed either directly on appropriate spacing bolts
using four mounting holes or on a DIN rail with an additional DIN rail adapter
(reference number 250 01 37x).
The drive controller DC RS
alpha is designed for controlling of DC-motors. It
contains a freely programmable mini-PLC with 5 inputs. It is also possible to
control the inputs by an external PLC.
The 5 inputs can be used as follows (all inputs can be driven with +24 V):
• 4 inputs for connection of floating contacts (e.g. for key switches, limit
switches, light barriers).
• 1 input for connection of a floating contact (e.g. for key switch, limit switch,
light barrier) which can also be used as counter input up to 1 kHz for
positioning.
The output for connecting the DC-motor is controlled by the integrated PLC and
a power output stage is used to increase the current. The power output stage,
consisting of a reversion relay and a power-FET, controls the connected DC-
motor with the functions stop, counter-clockwise rotation, clockwise rotation and
quick stop. The power output stage is protected against short-circuit and excess
temperature. If the set maximum motor current is exceeded or a short-circuit
occurs the output is switched off.
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