7 Additional settings
Configuration:
Parameters/Device parameters/Motor data
l
Motor i²t time
: The value can be found on the data sheet of the motor.
l
Number of pole pairs
: In the case of linear motors, this value must be set to 1. All
the other settings always refer to this value (e.g. the setting concerning the line
count of the angle encoder).
l
Nominal current and maximum current
: The values can be found on the data sheet
of the motor. Pay attention to the scaling based on which the current value is
stated. The current setting is the root-mean-square current.
Risk of destruction due to excessive nominal current
When a linear motor is configured, the current should be reduced as much as possible in
the beginning.
Linear motors can have very high peak currents. These current values should not be
integrated in the configuration without prior testing.
We recommend beginning with only ¼ of the stated nominal current and selecting a und
peak current that is only 10% higher than the nominal current.
Configuring the number of pole pairs
A number of pole pairs > 1 is necessary, for example, if the period length of an analogue
angle encoder is not an integer multiple of the pole pair length. In this case, the number
of pole pairs must be increased until an integer ratio between the pole pair length and the
period duration is reached. The line count must then be determined based on the number
of pole pair lengths.
In this case, one electrical revolution is a multiple of the number of poles which is
reflected by the indicated actual position. The actual position must be set to 1 revolution
per pair of poles by way of the display settings.
Product manual BL 4000-C
Page 156 of 298
