Baumer N 143 - Manual (Page 3)

N 143
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1.2. Product description
Mounting the spindle position display (SPA) is by docking the hollow shaft to the end of the spindle shaft. The
hollow shaft is fixed by hexagon screw to the spindle shaft and secured by power grip.
This way, the SPA is cantilever-mounted and secured against torsion at rear of the housing by the attached
spreader pin. The spindle position display features an absolute multiturn sensing system allowing to acquire the
position after several turns of the spindle even during power-off. The position data will be retained even in case
of power failure (min. 10 years).
The current position value is displayed in the two-line backlit LCD display (2x 6 digits, numeric). Simultaneously,
in the same display the target transmitted by the control (master) is indicated. Two arrows show the editing en-
gineer the direction the spindle is to be turned in order to align the current value with the target. As soon as the
current value equals the target and is within the allowable tolerance, the target will disappear.
The SPAs are networked by cable cut to length providing male and mating connector. Power supply for all con-
nected SPAs is by the same cable.
Upper display line showing the target value
Arrows indicating the direction for target/current value alignments
Lower display showing the current value
Two softkeys on the keypad serve for manual positioning operations by power
tool in the required direction via infrared interface. The power tool enables set-
ting the individual shaft positions already during the aligning operation.
1.3. Operating modes
Two operating modes are available to define the order of SPA alignment within the network.
Direct mode: The master will enable the SPAs in successive order for the positioning operation.
Interactive mode: The master will enable all SPAs respectively all SPAs in one group. The processing order
in the alignment operation must be defined by the operator.
a) Direct mode:
In „direct mode“ the master will transmit the motor start signal (command „D“) to a specific SPA which is first to
be aligned by power tool. The red status LED is flashing fast (at approx. 2 Hz) while the relevant IR positioning
data are being transmitted to the power tool. After the positioning operation the LED switches to green continu-
ous what is recognized by the master when reading out the status flag (command „CX“ or „F“). Now the master
will transmit the motor start signal to the next SPA. This procedure will repeat until all SPAs have been aligned.
The order allows for individual alteration upon every profile change.
b) Interactive mode:
In „interactive mode“, the operator defines the order of SPA alignment.
Instead of transmitting the motor start signal (command „D“) to a specific SPA, the master will address all SPAs
in one group by broadcast command (address 99). The red status LEDs of all addressed SPAs is flashing slow-
ly (at approx. 1 Hz). Now the SPAs are enabled for alignment but so far no positioning data have been transmit-
ted to the power tool via the IR interface. The operator chooses one of the slowly flashing SPAs and pushes
one of its buttons. The red LED is now flashing rapidly (at approx 2 Hz) while this SPA is transmitting the IR
data. Once the aligning operation has been completed, the LED switches to green continuous. The operator
turns to the next SPA with a slowly flashing LED and will repeat the procedure until all SPAs have been aligned.
An already activated SPA (LED flashing fast) is set back to stand-by when pressing the button anew. The LED
is flashing slowly again and IR data transmission is aborted.
In group alignment operations, both modes can be combined. Example:
Firstly all Multicon AccuDrive devices are enabled for positioning by broadcast command, the order of alignment
is up to the operator .As soon as each SPA of group 1 is „in position“, the master will proceed with the next
group in direct mode.