Control Logic And Sequences; Application Control Modes; Jog Function; Zero Search - gefran ADV200 User Manual

5 Control logic and sequences

5.1 Application control modes

The input and output signals of the Electrical Line Shaft application for ADV200 drives and the relative
sequences are managed by a superordinate control device such as a PLC or IPC.
The application can thus be controlled via discrete digital I/O (digital input and output terminals on the
ADV200 regulation card and any expansion cards, such as EXP-IO-D6A4R1-ADV); the use of a fieldbus
interface (Profibus, Devicenet, Canopen, EtherCAT) allows more flexible management (virtual I/O,
positioning and phase variation). Moreover, the fieldbus configuration channel enables access to all drive
and application parameters in read and write mode.
Note on assignment of commands and application signals
In addition to the physical and virtual digital inputs, each selection list for assigning application commands
(jog, zero search, positioning, capture in electrical line shaft mode) contains the "Digital Param" item: when
this item is assigned, the corresponding command can be managed via a local interface parameter,
generally located in the same sub-menu or in the DIGITAL INPUTS menu.
For example, if the Move Trigger Source command is set to Digital Param, the positioning command is only
activated via the IPA 11506 Digital Move Trigger parameter (Off / On) from GF Express or the drive keypad.
As far as application signals are concerned, in addition to those assigned directly to the digital outputs in the
DIGITAL OUTPUTS menu, each sub-menu relating to the various functions contains the relevant signal flags
("Mon" parameters).

5.2 Jog function

The jog function is used to perform service movements of the axis controlled by the Electrical Line Shaft
application independently of the master axis.
To define the source of the jog command, set the IPA 11502 Jog Input Source parameter in the DIGITAL
INPUTs menu of the application.
The speed and acceleration parameters are assigned, respectively, via parameters IPA 11308 Jog Speed,
IPA 11310 Jog Accel and IPA 11312 Jog Decel in the POSITION menu of the ADV200 drive. The motor
starts the acceleration ramp when the jog command is activated. The jog speed is maintained for as long as
the command remains active and the deceleration ramp starts when the command is disabled. The direction
of rotation of the motor is defined by assigning parameter IPA 11316 Jog Direction Source in the
POSITION menu of the application.

5.3 Zero search

Zero searches are performed to move the slave axis to a predetermined position using an external digital
signal referred to as zero sensor. The zero search configuration parameters are contained in the HOME
REFERENCE menu.
The zero search procedure is generally launched by activating the digital input signal assigned via the IPA
11706 Home Request Source parameter; the zero sensor digital input signal is assigned via the IPA 11708
Home Sensor Source parameter while the speeds used during the procedure are defined by the IPA 11700
Home Speed and IPA 11702 Home Creep Speed parameters. The former is used until the sensor is
engaged for the first time, the latter when said sensor is cleared.
The strategy for engaging and clearing the zero sensor is established via the IPA 11710 Home Direction
parameter: this is set to determine the direction of rotation of the motor until the zero sensor is engaged and
that used subsequently to clear the sensor; the zero search can also be performed without the motor turning
at all.
At the end of the zero search, the IPA 12000 Actual Pos parameter is reset. The axis can also then be
made to run a positioning procedure at a position set via the IPA 11704 Home Offset Move parameter.
Zero search activity is signalled by the IPA 12022 Home Busy Mon flag or a digital output configured as
"Home Busy".
When the procedure is complete this is signalled by the IPA 12058 Home Complete Mon flag or by a digital
output configured as "Pos Zero Found".
____________________ _
User Guide Electrical Line Shaft for ADV200 Page 16 of 32