Lenze MC3000 Series Manual de usuario descargar pdf (Pagina 19)

13435743_EDBM301_v14.0 15

6.2.2 CIRCUIT DESCRIPTION

The control section consists of a control board with a 16 bit microprocessor, keypad and

display. Drive programming is accomplished via the keypad or the serial communications

port. During operation the drive can be controlled via the keypad, by control devices wired

to the control terminal strip, or by the the serial communications port. The Power Board

contains the control and protection circuits which govern the six output IGBTs. The Power

Board also contains a charging circuit for the bus lter capacitors, a motor current feedback

circuit, a voltage feedback circuit, and a fault signal circuit. The drive has several built

in protection circuits. These include phase-to-phase and phase-to-ground short circuit

protection, high and low line voltage protection, protection against excessive ambient

temperature, and protection against continuous excessive output current. Activation of

any of these circuits will cause the drive to shut down in a fault condition.

6.2.3 MC3000 INPUTS AND OUTPUTS

The drive has two analog inputs (0-10 VDC and 4-20 mA) that can be used for speed

reference, PID setpoint reference, or PID feedback. A speed potentiometer (10,000 ohm)

can be used with the 0-10 VDC input.

There are also two analog outputs: one is proportional to speed (frequency), and the

other is proportional to load.

The drive has three programmable outputs for status indication: one Form C relay and

two open-collector outputs.

Refer to Sections 14 - CONTROL WIRING and 15 - CONTROL WIRING DIAGRAMS

for more information.

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Lenze MC3000 Series Manual de usuario Pagina 19