Motor Power; Figure 7.1: Power Interface - Intelligent Motion Systems Excellence in Motion IM805H Operating Instructions Manual

M o t o r P o w e r
Pins 5 (+V), and 2 & 8 (GND) on connector P2 are used to connect motor DC
power to the IM483H/IM805H. Two local capacitors are needed. These must
be located as close to the IM483H/IM805H's motor power input pins as pos-
sible to ensure stable operation.
The first two capacitors, one for each motor phase, are low impedance alu-
minum electrolytics. The continuous operating voltage of the capacitor should
exceed the maximum supply voltage as well as any additional voltage caused
by the motor's back EMF. The value of the capacitors should be approximately
CALCULATING THE VALUE OF THE INPUT CAPACITORS
EXAMPLE: 3.2A (Peak Output Current @ 45VDC) X 150µF = 480µF 63V
150µF for every amp of peak per phase output current.
For power supply specifications and recommendations, see Section 5: Power
Supply Requirements.
9
8 7 6
ADDITIONAL
ELECTROLYTIC
CAPACITOR
P2
.1uF
100V
- + -
MOTOR
SUPPLY

Figure 7.1: Power Interface

4 3 2 1
68uF
10V,TANT
.1uF
100V
ADDITIONAL
ELECTROLYTIC
CAPACITOR
TOPSIDE PCB TRACES
+
BOTTOMSIDE PCB TRACES
+5VDC
SUPPLY
IM483H/IM805H Rev. R032206
37