SEW-Eurodrive MOVIDRIVE compact MCH41A, System Manual

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182
System Manual – MOVIDRIVE® compact Drive Inverters
4
Schematic procedure
Project Planning
4 Project Planning
4.1 Schematic procedure
Drive properties
The required drive properties are the main factors determining the selection of the in-
verter. The following figure is designed to help you with the selection.
Key
System selection
Positioning accuracy of the motor shaft Setting range (reference 3000 1/min) Control
<
±
360° <
±
5°...45° <
±
1° 1:200 1:800 > 1:800 Pos-Reg. n-Reg. M-Reg.
Voltage mode flux control (VFC) without
encoder Voltage mode flux control (VFC) with
encoder Current-controlled flux vector control
(CFC or SERVO) with encoder or resolver
MOVIDRIVE
®
compact MCF4_A with
asynchronous AC motor (DR, DT, DV)
without speed feedback
MOVIDRIVE
®
compact MCV4_A with
asynchronous AC motor (DR, DT, DV)
and speed feedback
– MOVIDRIVE
®
compact MCV4_A with
asynchronous servomotor (CT, CV)
– MOVIDRIVE
®
compact MCS4_A with
synchronous servomotor (CM, DS)
– MOVIDRIVE
®
compact MCH4_A with
asynchronous or synchronous servo-
motor (CT, CV, CM)
Motor selection for VFC
–
Max. torque < 150 % M
N
– Max. speed < 140 % n
Eck
– Thermal load (setting range, cyclic duration factor)
– Selection of the correct encoder (if necessary)
Motor selection for CFC and SERVO
–
Max. torque < 300 % M
N
– R.m.s. torque < M
N
at average speed
– Torque characteristic curves
– Selecting the correct encoder, for example Hiperface
encoder only with MCH4_A
Selecting the MOVIDRIVE unit
®
– Unit without fieldbus (MC_40A), with PROFIBUS-DP (MC_41A) or INTERBUS-LWL (MCH42A)
– Standard version or application version
– Motor/inverter assignment
– Continuous power and peak power in voltage-controlled flux vector control (VFC)
– Continuous current and peak current in current-controlled flux vector control (CFC or SERVO)
Selecting the braking resistor:
–
On the basis of the calculated regenerative power and the cyclic duration factor cdf
Options
–
EMC measures (NF, HF, HD, shielded motor cable)
– Operation/communication (keypad, serial interface)
Pos-Reg. = Positioning control
n-Reg. = Speed control
M-Reg. = Torque control
VFC = Voltage flux control
CFC = Current flux control for asynchronous servomotors
SERVO = current-controlled flux vector control for synchronous servomotors
M
N
= Rated torque of the motor
n
trans
= Rated speed (transition speed) of the motor