Danfoss MCO 305 Design Manual page 194

MCO 305 Design Guide
Function
HOME_OFFSET is used to introduce an offset com-
pared to the reference switch or index pulse. After
homing, the drive is positioned to HOME_OFFSET.
At this point the machine zero point or index is set.
33-02 Ramp for Home Motion
HOME_RAMP
Range
1 – par. 32-83 VELRES
Function
Acceleration to be used during movement to home
position. This statement refers to the minimum
ramp, which is defined under the par. 32-81
Shortest Ramp . This unit results from the par. 32-
83 Velocity Resolution usually in % of the minimal
ramp; 50% means half as fast, i.e. twice as long.
The following cohesion for HOME_RAMP results:
Ramp for Home Motion [ms]
p. 32 - 83 Velocity Resolution
p. 33 - 02 HOME_RAMP
NB!:
Ramp for Home Motion can never have a
higher value than par. 32-85 Default
Acceleration .
33-03 Velocity of Home Motion
HOME_VEL
Range
- p. 32-83 – p. 32-83
Function
HOME_VEL determines the Velocity of Home
Motion , with which the movement to the reference
switch is made. The velocity statement refers to
the rated speed and depends on the parameter 32-
83.
A negative sign means the search will be made in
the other direction.
Home Velocity [RPM]
par. 33 - 03 Home Velocity
default setting
194
__ Parameter Reference __
10
p. 32 - 81 Shortest Ramp [ms]
10
p. 32 - 80 Maximum Velocity
p. 32 - 83 Velocity Resolution
[ ] value for use in communication via serial communication port
®
MG.33.L4.02 – VLT is a registered Danfoss trademark
NB!:
Since the program always searches for
the reference switch in the same direction
of rotation (depending on sign) this
should be set at the limits of the motion area. Only
in this manner is it possible to guarantee that the
drive actually moves towards the reference switch
when moving home and not away from it.
In order to maintain a good repeatability of the
reference motion no more than 10% of the maxi-
mum speed should be used.
33-04 Behavior during Home Motion
HOME_TYPE
Option
Reverse and index
Reverse no index
Forward and index
Forward no index
Function
0 = Moves to reference switch with Velocity of
Home Motion and direction, then reverses and
slowly leaves the switch, subsequently moves
to the next index impulse.
1 = like 0, but does not search for index impulse
2 = like 0 but without reversing, rather continues
movement in the same direction out of the
switch
3 = like 1 but without reversing
33-1* Synchronization
Position, velocity and angle/position synchroni-
zation, with or without marker and more is possible
with following parameters:
33-10 Synchronization Factor Master (M:S)
SYNCFACTM
Range
–MLONG – MLONG
–MLONG to –1 = turns the direction of
synchronization (ratio to the master)
[0]
[1]
[2]
[3]
1