ID 442426.04 347WE KEEP THINGS MOVING
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15
Manual SD6
Connected to X10, effective supply voltage.
The charge relay is controlled to ensure low wear depending on the current DC
link voltage and A36.
In control mode B20 = 64: SSM - vector control affects A36 the field weakening
mode. A limit value is derived from A36 . DC link voltages above this limit value
are not taken into consideration in field weakening mode to prevent oscillations
in the motor current.
Number of poles of a synchronous servo motor or asynchronous motor.
If the number of pole pairs is specified for third-party motors, the value must be
multiplied by 2 before it is entered.
Correlation between the number of poles, nominal speed n
N
in rpms and the
nominal frequency f
N
in Hz of the motor: B10 = 2·(f
N
· 60/n
N
).
Nominal current in A, as per rating plate.
Nominal speed in rpm for rotational motors, nominal speed in m/min for linear
drives, as per rating plate.
Nominal voltage as per rating plate. For asynchronous motors note circuit type
(Y/∆)! Therefore make certain that parameters B11 ... B15 match!
Nominal frequency of the motor as per rating plate. Parameters B14 and B15
define the pitch of the V/f characteristic curve and thereby the characteristics
of the drive. The V/f characteristic curve determines the frequency (B15 f-
nominal) at which the motor is operated at nominal voltage (B14 V-nominal).
The voltage and frequency can be increased linearly beyond the nominal point.
The upper voltage limit is the supply voltage that is applied. STOBER system
motors up to size 112 offer the option of star/delta operation. Delta operation at
400 V makes it possible to increase output by a factor of 1.73 with an extended
adjusting range and at a constant torque. The motor requires additional current
in this connection variant. Make certain the following points are observed:
• The drive controller must be designed for the corresponding output (P
delta
= 1.73 · P
star
).
• B12 (I-nominal) is parameterized to the appropriate nominal motor current
(I
delta
= 1.73 · I
star
).
Correction factor for the pitch of the V/f characteristic curve. The pitch with V/
f-factor = 100 % is determined by V-nominal (B14) and f-nominal (B15).
Boost refers to an increase in voltage in the lower speed range, which makes
a greater starting torque available. A boost of 100 % means the nominal motor
current will flow at 0 Hz. To determine the required boost voltage, the stator
resistance of the motor must be known.
You must therefore always perform B41 autotuning for motors without an
electronic rating plate.
For STOBER standard motors, the stator resistance of the motor is defined
when the motor is selected.
A36 mains voltage version 0
B10 motor-poles version 0
B12 nominal motor current version 0
B13 nominal motor speed version 0
B14 nominal motor voltage version 0
B15 nominal motor frequency version 0
B22 V/f-factor version 0
B23 V/f boost version 0
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