Nidec Leroy-Somer Powerdrive MD Smart, Руководство по интеграции

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HARDWARE SELECTION
Powerdrive MD Smart Integration Guide
5751 en - 2021.10 / e
HARDW
ARE
SELECTION
2 - HARDWARE SELECTION
2.1 - General characteristics
Characteristics Level
Power supply voltage
6P or multi-pulse:
Model (T) 400V -10% to 480V +10%
Model (TH) 525V -10% to 690V +10%
Regen:
Model (T) 400V -10% to 480V +5%
Model (TH) 525V -10% to 690V +5%
Interphase voltage imbalance <2%
Input frequency
‘T’ models: 50 - 60 Hz ± 5%
‘TH’ models: 50 - 60 Hz ± 5%
Maximum power on per hour (power) 20
Output frequency range 0 to 590 Hz
ROHS compliance Complies with standard 2002-95-EC
Legend of the words used in this chapter:
Isp : continuous output current
Pmot
: motor power
Idc : DC BUS intensity
Imax (3 sec): peak output intensity for 3 secs after start
Imax (60 sec): maximum output intensity, available for 60 seconds every 600 seconds
Maximum overload : for machines with constant torque and high overload (presses, crushers, lifting, etc.) and all applications
requiring rapid acceleration of a significant inertia (centrifuges, bridge crane movement, etc.)
Reduced overload : for machines with centrifugal torque or constant torque at reduced overload (fans, compressors, etc.)
2.2 - Determination of the continuous output current (Isp)
The various components presented in Section §1 are intended to be assembled in order to make a Powerdrive MD Smart variable
speed drive.
Before you can select the component references, it is necessary to know the continuous output current (Isp) required to drive the
motor.
This requires determining the conditions under which the variable speed drive will operate.
The continuous output current Isp of the Powerdrive MD Smart shall be determined for optimal operation with a centrifugal or
constant torque machine with reduced overload, at a temperature ≤ 40°C (chassis enclosure temperature), an altitude ≤ 1000 m
above sea level, a chopping frequency of 3 kHz and a speed ≥ 10 Hz in steady state .
If the application complies with these conditions, the component selection tables may be used directly, see Section 2.3 .
Outside these normal conditions of use, the continuous output current of the application shall be determined. Detailed explanations
of operating temperature, altitude derating, low frequency or high chopping frequency operations, and reduced/maximum overload
applications are provided in the following paragraphs.
A diagram to help determine the Isp current of the application is available in § 2.2.1 ..