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IM483 Operating Instructions Revision R032306
35
IM483 Operating Instructions Revision R032306
AC LINE
CONDITIONER
120VAC IN
Chassis Ground
IM483 #1
IM483 #2
ISP200-4
P2:4 - +V
P2:3 - GND
P2:3 - GND
P2:4 - +V
NOTE THE FOLLOWING:
1] The use of shielded twisted pair cabling.
2] Wiring run to each drive separately.
3] AC Line Conditioning used to limit line
spikes and surges.
V+
GND
LINE
NEUT
EGND
INTELLIGENT MOTION SYSTEMS, INC.
48v
48v
75v
75v
PS0020 REV D
ISP200
P2:1
P2:1
Twisted
Pair
MSEL0
MSEL1
MSEL2
MSEL3
ON
SW1
P1
P2
MSEL0
MSEL1
MSEL2
MSEL3
ON
SW1
P1
P2
Figure 7.1: IM483 Motor Power Connection
Configuring and Controlling the Output Cur r e n t
For any given motor, the output current used for microstepping is deter-
mined differently from that of a half/full step driver.
In the IM483, a sine/cosine output function is used in rotating the motor.
Therefore, when microstepping, the specified phase current of the motor
is considered an RMS value.
The output current is set by means of a current adjustment resistor placed
between P2:2 (Current Adjust) and P2:3 (Power Ground). See the next
subsection titled
“Setting the Output Current”
for connection instructions
and resistor values.
The IM483 also has an automatic current reduction feature, which allows
the user to reduce the current in the motor windings to the level required
to maintain holding torque, thus allowing for cooler motor operation and
greater system power effeciency. This feature is controlled by means of
a resistor connected between P2:1 (Reduction Adjust) and P2:2 (Current
Adjust). The subsection;
“Reducing the Output Current”
contains reduc-
tion adjustment resistor calculations and connection instructions.