Danfoss MCO 351, Руководство по эксплуатации

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5.7 MCO Advanced Settings
5.7.1 33-0* Home Motion
The 33-0* parameters specify the behaviour for homing
run and home motion.
33-00 Force Home
Option: Function:
[0]
*
Homing
run is not
forced After being turned on the current position is
valid as the real zero point.
[1] Home
forced After turning on the frequency converter and
after changing axis parameters, a forced
tracking of the home position must be made
before a motion command is executed, either
directly or by the programme.
In this setting, movement to the home
position must be completed before any other
positioning movement can take place.
For a motion command that is not executed
with a terminated homing run, the error 1 is
triggered in parameter
19-93 Error Status .
NOTICE
For safety reasons, and to avoid false positioning, the
parameter should always be set to [1], which forces
tracking of the home position. However, to ensure
correct function, a homing run must be completed
before the first motion command.
33-01 Zero Point Offset from Home Position
Range: Function:
0
*
[–1073741823 to
+1073741823 qc] Used to introduce an offset
compared to the reference switch or
index pulse. After homing, the motor
is positioned to the value in this
parameter.
33-02 Ramp for Home Motion
Range: Function:
10
*
[1 to value in
parameter
32-83
Velocity
Resolution
]
Acceleration to be used during movement
to home position. This statement refers to
the minimum ramp, defined in parameter
32-81 Shortest Ramp . This unit results from
parameter 32-83 Velocity Resolution usually
in % of the minimal ramp; 50% means half
as fast, that is, twice as long. The
following formula for the ramp is
calculated as follows:
Home ramp time =
P32-83
P33-02 × P32-81 in ms
NOTICE
Ramp for Home Motion can never have a higher value
than parameter 32-85 Default Acceleration .
33-03 Velocity of Home Motion
Range: Function:
10
*
[– value to +
value in
parameter
32-83
Velocity
Resolution
]
Determines the velocity of home motion,
with which the movement to the
reference switch is made. The velocity
refers to the rated speed and depends
on parameter
32-83 Velocity Resolution . A
negative sign means that the search is
made in the other direction.
The following cohesion for the ramp is
calculated as follows:
Home velocity in RPM =
P33-03
P32-83
NOTICE
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.
This is the only way to guarantee that the motor actually
moves towards, rather than away from, the reference
switch when moving home.
To maintain a good repeatability of the reference
motion, do not use more than 10% of the maximum
speed.
33-04 Behaviour during Home Motion
Option: Function:
[0]
*
Reverse and
index Moves to reference switch with velocity of
home motion and direction, then reverses
and slowly leaves the switch. Then it
moves to the next index impulse.
[1] Reverse no
index As option [0], but does not search for
index impulse.
[2] Forward and
index As option [0] but without reversing.
Instead it continues movement in the
same direction out of the switch.
[3] Forward no
index As option [1] but without reversing.
5.7.2 33-4* Limit Handling
The 33-4* parameters determine the limit switch
behaviour.
When the positive or negative hardware limit switch has
been activated, the movement is stopped. Parameter
19-93
Error Status is set to either [2] Positive HW limit or [3]
Negative HW limit . For behaviour after an error, see
parameter 33-83 Behaviour after Error .
Commissioning Operating Instructions
38 Danfoss A/S © 04/2014 All rights reserved. MG33R302
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