Description of the Software Modules and Parameters
Parameter manual
b maXX
BM3000
Document no.: 5.12001.07
597
4
Remarks:
Bit 4: Referencing with or without setting the home position
By default, the position actual values and set values are set to the home position after the
home position is reached. For some applications, especially with multiturn absolute value
encoders it may be purposeful to determine the position actual value of the encoder at the
home position to take it into consideration automatically in a control.
Setting the home position can therefore be deactivated accordingly. The drive will com-
plete the homing; however, the position values are not set to the adjusted home position
but will remain unchanged. The control can now read out the position actual value at the
home position.
Bit 5: Deactivate monitoring with homings to mechanical stop
During homings to a mechanical stop, specific monitoring procedures may be triggered
due to the mechanical blocking. This includes the position error monitoring, monitoring of
speed difference and block monitoring.
Three options are available to solve this problem:
– The user will adjust active monitoring suitable for homing. However, this may be too
weak for "normal operation".
– The user will deactivate monitoring for the duration of homing itself.
– Activating the Mode Bit 5 will prompt the controller to deactivate the three monitoring
procedures for the period of homing, which means from the start of the homing to
the recognition of the mechanical stop after expiration of the
Homing
blocking time.
Bit 6: Automatic setting of the absolute value offset (M0 offset)
The parameters of the absolute value offset are set at the end of homing after bit 6 was
set. The absolute value offset is automatically saved in the encoder, if the parameter
Encoder Data Selection is set, so that the absolute value offset is read from the
encoder during initialization.
120.3
Home position
The home position is the position value that indicates the absolute position of the drive at
the home position. This value must be adjusted prior to the reference run. If the drive has
reached the home position after the reference run, the current position set value and po-
sition actual value will be wet to the home position value.
120.4
Homing method
Selection of the homing method.
This parameter determines the procedure for the reference run. This includes the start di-
rection of the home position and evaluation of the reference initiator.