Omron CS1W-MC221 -, Operation Manual

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Considerations When Starting Up the MC Unit Section 11-3
3. Press the START Key. The first block of program number 001 will be exe-
cuted. In this case, block N002 will be executed because the first block is
a comment,.
To halt the operation in progress, press the PAUSE Key.
4. When execution of the first block has been completed, PAUSE status will
go into effect and program execution will be stopped. The number of the
next block to be executed will be displayed.
Press the PROG EXEC Key to execute the next block. Press the CLR Key
to return to the program number input screen. Then press the CLR Key
again to return to the operating mode menu.
11-3 Considerations When Starting Up the MC Unit
11-3-1 Setting the System Parameters
The main considerations when setting the machine parameters are explained
below, taking U-series Servo Drivers as an example.
Motor Rotation Direction
and Encoder Polarity An OMRON Servomotor connected to the MC Unit will operate if the default
values (forward for positive voltage, and forward for encoder increase) are set.
If the system is set for a right-hand ball screw connection, the default settings
will produce a decrease in the present value as the table (workpiece) moves
away from the Servomotor. To have the present value increase as the table
(workpiece) moves away from the Servomotor with a right-hand ball screw
connection, use either of the following two methods.
• Set the MC Unit parameter (rotation direction) so that the motor will
reverse for a positive voltage and reverse for an encoder increase.
• Set the Servomotor’s mode to Reverse Mode. For U-series Servomotors,
turn ON bit 0 of Cn-02.
Encoder Resolution The encoder resolution parameter sets the number of pulses (encoder fre-
quency dividing ratio) that can be output from the Servo Driver per Servomo-
tor revolution. For U-series Servomotors, set the encoder resolution according
to the encoder frequency dividing ratio (Cn-0A), and not the number of
encoder pulses parameter.
Note When a U-series Servo Driver with a capacity of 1 kW or more is used, a
speed of up to 614.4 kpps is possible (when the encoder resolution is 8,192
and the maximum speed is 4,500 r/m). The maximum control speed of the MC
Unit, however, is 500 kpps, so adjust the encoder resolution and the encoder
frequency dividing ratio so that the speed will stay within this range.
Pulse Rate With a ball screw connection, set the ball screw pitch (the distance advanced
for one turn of the ball screw) for the numerator. Set the value derived by mul-
tiplying the encoder resolution by the ratio for the denominator. This number is
a ratio of the number of millimeters advanced per pulse.
RUN|STATUS RUN
SIN|PROGRM P001
TK1|BLOCK N002
|
RUN|STATUS PAUSE
SIN|PROGRM P050
TK1|BLOCK N002
| RUN: START