Selection criteria
5.
SELECTING CRITERIA
Selecting the main power supply
· 194 ·
198
Ref.2003
QC-PDS
HARDWARE
NON-FAGOR asynchronous spindle motor
For NON-FAGOR asynchronous spindle motors (e.g. a high-speed spindle)
the previous tables will generally not provide all data for standard FAGOR
motors.
To properly calculate the power demanded by the NON-FAGOR
asynchronous spindle from the power supply, it is necessary to:
To know the maximum power to be provided at the axis. Always use the
mechanical power for cycles S1 or S6-40% (depending on the duty
cycle of the applicaton).
Obtain the power at the motor terminals by dividing the previous value
by the efficiency of the motor.
If the value of the motor efficiency is unknown, apply the following rule. For:
Divide the result by the efficiency of the drive.
T. H5/17
Required power drawn from the main power supply by the QC-PDS system when using a FM7
asynchronous spindle motor. HS3.
In star
Asynchronous
spindle motor
Power (kW)
(%) Drive power
Drive for
asynchronous
spindle motor
Drive
Pm
S1 S6-40% S1 S6-40% (kW)
(%) (kW)
FM7-D075
7.5 11.0 86.5 84.6 12.7
QC-DR-040
90 14.1
FM7-D110
11.0 15.5 90.2 89.2 17.4
QC-DR-055
90 19.3
FM7-D185
18.5 26.0 91.8 91.5 28.4
QC-DR-080
90 31.6
FM7-D220
22.0 33.0 89.2 88.1 37.5
QC-DR-120
90 41.6
FM7 ASYNCHRONOUS SPINDLE MOTORS HS3
Maximum power consumed by the main power supply (kW)
ASYNCHRONOUS
Asynchronous for spindle Pm
1
2
POWER SUM (kW)
2
Pm:
Required power drawn for the asynchronous spindle drive in S6-40% cycles.
This data includes the internal losses of the drive. fc: 4 kHz.
In triangle
Asynchronous
spindle motor
Power (kW)
(%) Drive power
Drive for
asynchronous
spindle motor
Drive
Pm
S1 S6-40% S1 S6-40% (kW)
(%)
(kW)
FM7-D075
7.5 13.0 86.5 84.6 15.4 QC-DR-040 90 17.1
FM7-D110
11.0 20.0 90.2 89.2 22.4 QC-DR-055 90 24.9
FM7-D185
18.5 32.0 91.8 91.5 35.0 QC-DR-080 90 38.9
FM7-D220
22.0 40.0 89.2 88.1 45.4 QC-DR-120 90 50.4
where:
Pm
. Maximum power that the drive may demand from the main power supply for each motor-drive
combination. It includes the power dissipated by the drive itself. Units: kW.
NOTE. NEVER use the peak power.
P 22 kW motor efficiency = 85 % ( = 0.85)
P > 22 kW motor efficiency = 90 % ( = 0.90)
drive efficiency = 90 % ( = 0.90)
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