LA Series Linear Servo Amplifier Technical Reference Manual
25
8.6.2
Serial Parameter Settings
The user parameter settings are configured either by jumpers or via the serial interface. When jumpers are
used, the serial interface can only be used to read the jumper settings. If no jumpers are installed, the software
settings are used. If the configuration when using jumpers results in no jumpers being installed (Sine Mode with
all minimum values), place a jumper on JP1-G. This will force the drive to read and use the jumper settings. The
use of this jumper in Sine mode will not affect operation.
When no jumpers are installed, the settings are controlled from software using P values as shown below. To
use the serial interface to configure the settings, remove all jumpers and use the values as described below for
the Pn locations. Note that if
any
jumper is installed,
all
jumper settings will be read and used for setting the
parameters.
P – Parameter Command
This command is used to view or set the user parameters and RAM locations in the drive. The following list
shows software variables and their corresponding “P” access number. Be VERY careful when changing these
values, as the software does not provide for protection from improper settings. Adverse settings may cause
“undesirable” effects on the system.
The values for P0-P6 reflect the jumper settings as described above when jumpers are installed and cannot be
changed from the serial interface. When no jumpers are installed, these values can be modified using the serial
interface by changing the appropriate Pn value to configure the drive as if jumpers were present.
P0 Transconductance setting
P1 Absolute Overcurrent Trip setting
P2 Overcurrent Trip setting
P3 Overcurrent Trip Time setting
P4 Input Filter setting
P5 Sine/ Hall mode setting
P6 Current Loop Bandwidth setting
P7 Motor Reverse setting
Note: P8-P255 are system values that should not be changed by the user.
To set a parameter value, type P followed by the address (0-6) followed by a space followed by the value
followed by <Enter> (Cr Lf). Refer to the next page for the P values and their settings.
Example: Set P1 Absolute Overcurrent Trip to 15.0 Amps.
Type: P1 1<Enter>
Drive response: 1
To view a parameter setting, type P followed by the address (0-6) followed by Enter.
Example: View the Overcurrent Trip setting:
Type: P2 <Enter>
Drive response: 1 (or whatever the present value is)
