User`s manual

D-14 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual – January 2001 GFK-1742A
D
GE Fanuc Start-Up and Tuning Information for Analog Servo
Systems
There are two major sections covered;
•
Validating Home Switch, Over Travel Inputs, and Motor direction.
•
Velocity at Max Cmd, Position Loop Time Constant, and Velocity Feedforward determination
Analog Mode System Startup Procedures
Startup Procedures
1. Connect the analog motor to the servo amplifier according to the manufacturer’s
recommendations.
2. Connect the DSM314
Drive Enable
Relay and
Velocity Command
outputs to the servo
amplifier. Connect the position feedback device (Incremental Quadrature Encoder) to the
Motion Mate DSM314 encoder inputs.
Note
If these connections are incorrect or there is slippage in the coupling to the
Feedback Device, an
Out of Sync
error condition can occur when motion is
commanded.
3. Connect the servo amplifier Ready output (if available) to the DSM314 Drive Ready input
(IN_4). This signal must switch to 0v when the amplifier is ready to control the servo.
The
DSM starts checking the Drive Ready input one second after the Drive Enable relay
turns on in response to the Enable Drive %Q bit.
If the servo amplifier does not provide a
suitable Ready output, this input to the DSM314 must be connected to 0v or the Drive Ready
input can be disabled in the module configuration. If a
Home
switch is used (24 Vdc), wire it
to the correct DSM314 input. The
Home
switch must be wired so that it is ALWAYS ON
when the axis is on the negative side of home and ALWAYS OFF when the axis is on the
positive side of home.
4. Use the VersaPro Configuration Software to set the desired configurable parameters. Store the
configuration to the PLC.
5. Turn on the %Q
Enable Drive
bit and place the command code for
Force D/A Output
equal
to 0 in the %AQ table. Confirm that the servo amplifier is enabled (the motor should exhibit
holding torque). If the motor moves, adjust the amplifier command offset adjustment until
the motor stops moving. Note: The %Q
Enable Drive
bit must be maintained ON in order for
the
Force D/A Output
command to function.