Version; Potentiometers (Pots); Connector P1 And Enable Indicator - Aerotech BA10 SERIES User Manual

Introduction
1-6
The following examples should be used as a guideline for setting the DIP switches.
Example for a BA30 - Setting Continuous Current Limits
To set the continuous current limit to 5.5A:
5.5A Continuous RMS x 1.414 = 7.8A continuous peak
(7.8A continuous peak/30A max peak) x 100 = 26%.
Open switches 5, 6, and 7; close switch 8.
Example for BA20 - Setting Current Limits and RMS Limits
To set the RMS limit to 5.0A (RMS) and peak current to 15A:
Peak Current
(15A peak/20A max peak) x 100 = 75%
Close switches 3 and 4; open switches 1 and 2.
RMS Current
5.0A RMS x 1.414 = 7A continuous peak
(7A continuous peak /20A max peak) = 35%.
Close switches 6, 8; open switches 5 and 7.

1.4.3. Potentiometers (POTs)

Potentiometers INPUT, TACH, GAIN, and BALance are associated with the
pre-amplifier circuit contained in the amplifier. Refer to Figure 1-3 for location of the
pots on the BA drive. These potentiometers are used to adjust the pre-amplifier gain when
the MODE switch is set for velocity control using an external DC tachometer or
incremental encoder for velocity feedback. Refer to Table 1-3 for pot functions.
Table 1-3. Potentiometer Functions
Potentiometer CW
GAIN decrease
INPUT increase
TACH increase
BALance
1
Velocity loop GAIN adjustment is affected by current limit peak (switches 1 to 4).
Maximum gain when 1 to 4 are closed.

1.4.4. Connector P1 and Enable Indicator

Connector P1 (25-pin "D" type, female) provides the interface for input and output
control connections. Refer to Table 1-4 for connector P1 pinouts. The LED ENABLE
indicator will illuminate at all times until there is a fault or external shutdown, then the
indicator will be off and motor power will be removed. Refer to Figure 1-3 for location
of these items. A second LED will be green whenever +5V is present (Rev E and above).
Aerotech, Inc.
BA10/20/30 Series User's Manual
CCW
This pot adjusts the velocity loop AC
increase
gain of the pre-amplifier
This pot adjusts the DC gain of the input
decrease
command present at P1 Pins 8 & 21.
This pot adjusts the DC gain of the tach
decrease or encoder derived velocity feedback
input present at P1-Pin 3.
Provides the means of canceling small
DC offsets that may be present in the
pre-amplifier circuit.
Function
1
.

Version 1.6