Aerotech BAL LINEAR AMPLIFIER SERIES, Руководство пользователя

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Installation and Operation BA Linear Series User’s Manual
2-8
Aerotech, Inc.
Version 1.5
2.5. Power and Control Connections
The BAL drives can be wired into a system in one of two ways depending upon the
desired mode of operation. Command signals can be referenced to velocity or torque
(current) control signals. The user has access to four potentiometers, three that adjust gain
while the fourth (BALance) compensates for input signal offsets. Figure 2-6 illustrates a
portion of the pre-amplifier circuit that is accessible to the user for adjusting command
signal gains.
For adjustments in gain roll-off, “Personality Module” RCN1, pins 1-16, 2-15, 3-14,
5-12, and 7-10 are provided for the selection of the appropriate resistor/capacitor pair
factory default values are shown in Figure 2-6.
2.5.1. Setup – Torque Command Mode (Current)
To setup the pre-amplifier circuit for use in the torque (current command) mode,
configure the BA amplifier as follows:
•
Place SW4 position 6 (mode) to closed (default)
•
Place SW4 position 5 (test) to open (default)
•
SW4 positions 1 through 4 selects current limit
•
Potentiometers “INPUT” set full CW and “GAIN” set full CCW to provide
a transconductance gain of
±
10 volts for full current output.
“BALance”and “TACH” have no effect.
•
JP7 set to 2-3 (default)
•
JP9 and JP13 set to 1-2 (default)
•
JP3 set to 1-2 (default) for brushless motor operation or 2-3 for brush motor
operation
•
JP10, JP12, set to 2-3 and JP4 set to 1-2 for zero (0) degrees commutation
(default) or JP10, JP12 set to 1-2 and JP4 set to 2-3 for thirty (30) degrees
commutation (brushless motor operation only).
•
Set JP8 to 1-2 (default)
With this configuration, an input signal of
±
10 volts to pins +INPUT and -INPUT will
produce the maximum current output signal (viewed at J6 pin 25 ICMD) of
±
6 volts.
Switch “SW4” 1 through 4 are used to scale this
±
6 volt signal from zero to maximum
current. Refer to Figure 2-3 for torque command configuration.