122
Manual – MOVIPRO® SDC with DeviceNet Interface
10
Explanation of the parameters
Parameterization of MOVIPRO
®
P900 Reference
offset
Setting range:
−
(2
31
−
1) – 0 – (2
31
−
1)
Reference offset (zero offset) is used to determine the machine zero (origin). The follow-
ing applies:
Machine zero = reference point + reference offset
The reference offset always refers to the encoder set via
P941 Source actual position
(page 129).
This encoder can be a motor encoder, an external encoder or a DIP encoder. The cor-
responding actual positions are indicated by IPOS
plus®
variables.
• H510 Actual position external encoder
• H511 Actual position motor encoder
The reference offset is activated again after reference travel has been completed suc-
cessfully.
P901 Reference
speed 1
Setting range: 0 – 200 – 6000 rpm
Reference speed 1 determines the travel speed for the first part of the reference travel.
Speed change always takes place via stop ramp t13 (page 94). The search directions
during reference travel are determined by the respective reference travel type. The
speed is in effect until the reference cam has been reached.
P902 Reference
speed 2
Setting range: 0 – 50 – 6000 rpm
Reference speed 2 determines the travel speed for the second part of the reference
travel. Speed change always takes place via stop ramp t13 (page 94). The search direc-
tions during reference travel are determined by the respective reference travel type. The
speed is used from the time the drive moves away from the reference cam to when it
reaches the first zero pulse.
P903 Reference
travel type
Setting range: 0 – 8
The reference travel type specifies the reference travel strategy that is used to establish
the machine zero of a machine.
This setting also defines the search direction for the reference cam in the individual ref-
erencing phases.
Use parameter
P904 Referencing to zero pulse
(page 124) to determine if the reference
travel takes place to the edge change of the reference cam or the next zero pulse of the
encoder.
Prerequisite for execution of reference travel is a drive that is ready and enabled with
the exception of reference travel type 8.
There are also types available that can function without a reference cam.
• Type 0: Left zero pulse
– First search direction is CCW.
– Reference position = Left zero pulse from current position
– Machine zero = reference point + reference offset
• Type 1: CW end of the reference cam
– First search direction is CCW.
INFORMATION
In case of reference travel of a drive system with HIPERFACE
®
encoder, the value of
P905 is recalculated and overwritten by the reference travel.
0
0
I