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DOK-INDRV*-HCS01******-PR05-EN-P
Rexroth IndraDrive CsDrive Systems with HCS01
Available third-party motor
0.5 × (L
U-Vmin
L
=
Dr
with 1 kHz)
Fig. 4-2:
Mounting of 3 × L
Requirements on the choke:
●
I
≥ I
n_Dr
n_Mot
The rated current of the choke has to be greater than or equal to the rated motor current.
●
Depending on the maximum speed, the choke is loaded with the respective output frequency and the PWM frequen‐
cy of the drive controller.
●
The insulation class has to correspond at least to that of the motor or has to be sized for higher temperatures.
●
The voltage load of the choke depends on the drive controller used.
When the inductance is measured, different inductance values
can be determined at different rotor positions within one pole pair
distance of the motor. The average value is relevant for the check
of the minimum value.
Correct values can only be determined when the motor is in
standstill!
- L
) (inductance measurement
U-V
(Three-Phase Choke)
Dr
Tab. 4-9:
Data for Possibly Required Choke
Temperature Evaluation of Third-Party Motor
Only operate such motors with incorporated temperature sensor at
Rexroth IndraDrive Cs controllers so that the motor can be thermally moni‐
tored by the drive controller and protected against destruction by too high
temperature rise (see "P-0-0512, Temperature sensor").
When, in exceptional cases, you would like to operate third-party motors with‐
out temperature sensor at Rexroth IndraDrive Cs controllers, you must deter‐
mine the thermal time constants of motor housing (P-0-4035) and motor
winding (P-0-4034, P-0-4037). By means of its temperature model, the firm‐
ware can correctly reflect the cooling situation of the motor.
In case the motor housing or fan is dirty, this worsens the cooling
situation of the motor and protection against thermal overload is
therefore insufficient!
Bosch Rexroth AG
Combining the individual components
Planned third-party motor
Calculate the leakage inductance (asynchronous mo‐
tor) or inductance (synchronous motor) of the third-par‐
ty motor by means of the single-phase equivalent cir‐
cuit diagram (manufacturer's specification!).
Determine choke by means of calculation, if necessary.
It is recommended that you contact Rexroth!
51/341
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