Aerotech BA10 SERIES, User Manual

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BA10/20/30 Series User’s Manual Installation and Operation
Version 1.6
Aerotech, Inc.
2-5
Figure 2-2. Wiring to Minimize EMI and Capacitive Coupling
2.3.2. Fusing and Inrush Limiting
The BA series amplifier does not contain a fuse or any inrush limiting internally. These
can be added externally to the AC input as shown in the figure below:
Figure 2-3. Fusing and Inrush Limiting
BA
AMPLIFIER
GROUNDING
SCREW
EARTH GROUND
CASE GROUND
MOTOR
TWISTED TOGETHER
SHIELD
One toroid (ferrite) around the three motor leads (two
leads for brush motors). There should be 10 turns for 16
AWG wire and 7 tunrs for 14 AWG wire. Use a Ferrox
cube 500T600-3C81 core or equal.
This configuration is especially important if the BA amplifier is operating at DC bus voltages of 160 VDC or 320 VDC (e.g., 115 VAC or 230 VAC input power).
LO
HI
A
B
C
BA SERIES
THERMISTOR AND FUSING
A.C.
Input
/2
+,
BLU
BRN
G/YEL
FUSE
DUE TO CAPACITIVE NATURE OF AMPLIFIER INPUT CIRCUIT,
CURRENT INRUSH LIMITING IS RECOMMENDED. NEGATIVE
TEMPERATURE COEFFICIENT THERMISTORS ARE USED FOR
THIS PURPOSE. THERMISTOR IS TO BE PLACED IN THE AC HI
LINE. ONLY ONE THERMISTOR NEEDED FOR ONE AMP.
ALTERNATELY, 2 THERMISTORS CAN BE USED IN AC HI & LO
FOR MULTIPLE AMPS IN PARALLEL.
RECOMMENDED MODELS:
RODAN SURGE GIARD SG100 (20A RMS)
AMETHERM #SL32IRO30 (30A RMS)
RECOMMENDED FUSE VALUES:
BA10 10 ASB
BA20
BA30
20 ASB