User Manual 2-1
DSC/DSCT series
2. CHARACTERISTICS
Sinusoidal Brushless motors DSC and DSCT drives are realized with a high performance IGBT power
module structure, which can operate to high frequency with low losses. Some of the principal characteristics
are the following:
• Speed and torque digital regulation. Drive parameters can be set by on-board keypad or serial line. The
3-key keypad allow quick data setting and displaying (4 1/2 digits).
• Speed and position feedback from motor resolver; resolver phase auto-tuning.
• Analog speed, torque and external current limit references from connector (+/-10V), or digital references
from memory (set by keypad or by serial line).
• Digital inputs are isolated from regulation; connection with optocouplers.
• Automatic current loop parameters adaptation to the motor. The band of the current regulation is 2kHz.
• Possibility to connect directly to the mains by transformer or autotransformer.
• Regulation circuits can be supplied directly from the power connections or from optional auxiliary supply
(to keep data in case of mains supply power fault).
• On-board clamping circuit, except the resistor connected externally.
• Cooling fan, if necessary, incorporated and supplied from the circuit control supplier.
• Parameters saving on EEPROM.
• Easy diagnostic of the drive “ state” on the on-boarddisplay or the serial line.
• Fault protections displayed on the on-board keypad or on the serial line: MIN. and MAX. voltage, motor
overheating, radiator over-temperature, resolver fault, power alarm (IGBT in protective block), etc.
• Simulated encoder output, tho channels and zero signal, number of pulses per revolution selectable by
keypad.
• Single overcurrent protection on every power element.
• Transitory overloading (T<=100msec. from stop and T=2sec. With f>2.5Hz) equal two times the nominal
current, with automatic reentry to nominal current.
• Frequency input by standard encoder TTL or by frequency & up/down directional signals.
• Possibility to use drive as point-to-point positioner.
• Sample time for logic inputs and ouputs : approx. 10ms
• Sample time for analog output : approx. 2ms
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