SEW-Eurodrive MOVITRAC 07, Системное руководство

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System Manual – MOVITRAC® 07
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Group drive
Project Planning
5.12 Group drive
In V/f character. operating mode, a group of asynchronous motors can be operated on
one inverter. Please note:
• Select V/f operating mode
• Set the power of the largest motor
• Switch off automatic adjustment P320
• Set IxR compensation P322 to zero
• Set slip compensation P324 to zero
• Set the current limitation to 1.5 times the total current of the motors
In this operating mode, the inverter operates without slip compensation and with a con-
stant V/f ratio.
Motor currents The total of the motor currents must not exceed the output rated current of the inverter.
Motor lead You can calculate the permitted length of all motor leads connected in parallel as fol-
lows:
l
T
= Total length of the motor leads connected in parallel
l
max
= Recommended maximum motor lead length
n = Number of motors connected in parallel
Only use unshielded motor leads.
Motor size The motors in a group must not be more than three levels apart.
The parameter settings apply to all connected motors.