S94P01C -e1
48
6.4.2 RS-485 Conguration
This parameter sets how the optional RS485 interface will function. The RS485
interface can be configured for normal operation (programming and diagnostics using
MotionView software) or as a Modbus RTU slave. See section 5.4 for details on
communication interfaces.
6.4.3 Modbus Baud Rate
This parameter sets the baud rate for RS485 interface in Modbus RTU mode. When
the drive is operating in normal mode the baud rate is set to the same setting as the
RS232 interface.
6.4.4 Modbus Reply Delay
This parameter sets the time delay between the drives reply to the Modbus RTU
master. This delay is needed for some types of Modbus masters to function correctly.
6.5 Analog I/O Group
6.5.1 Analog Output
The PositionServo has one analog output with 10-bit resolution on P3.23. The signal is
scaled to ± 10V. The analog output can be assigned to following functions:
• Not Assigned
• Phase current RMS
• Phase current Peak
• Motor Velocity
• Phase U current
• Phase V current
• Phase W current
• Iq current (Torque component)
• Id current (Direct component)
6.5.2 Analog Output Current Scale (Volt / amps)
Applies scaling to all functions representing CURRENT values.
6.5.3 Analog Output Current Scale (mV/RPM)
Applies scaling to all functions representing VELOCITY values.
(Note: that mV/RPM scaling units are numerically equivalent to volts/kRPM)
6.5.4 Analog Input Dead Band
Allows the setting of a voltage window (in mV) at the reference input AIN1+ and
AIN1- (P3.24 and 25) such that any voltage within that window will be treated as zero
volts. This is useful if the analog input voltage drifts resulting in motor rotation when
commanded to zero.
6.5.5 Analog Input Offset Parameter
Allows you to adjust the offset voltage at AIN1+ and AIN1- (P3.24 and P3.25). This
function is equivalent to the balance trim potentiometer found in analog drives. Lenze
recommends that this adjustment be made automatically using the “Adjust analog
voltage offset” button while the external analog reference signal commands zero
speed.
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