MID-7654/7652 Servo Power Motor Drive User Guide
10
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Setting Continuous and Peak Current Limits
The MID-7654/7652 uses high-efficiency PWM amplifiers configured as torque blocks (current
amplifiers or transconductance amplifiers). The
peak current limit
is the maximum current your motor
can withstand for short periods of time. The
continuous current limit
is the maximum current your motor
can withstand indefinitely.
Caution
To avoid overheating the drive under a motor fault condition, ensure the following error
limit is set above zero in the motion controller configuration software. The default following error
limit is 32,767.
Figure 4 illustrates the command voltage input to current output relationship for periods of time less than
2.7 seconds.
Figure 4.
Input Voltage to Output Current Relationship for Periods of Time Less Than 2.7 Seconds
Table 4.
Limit Status LED DIP Switch Settings
Switch Setting
Operation
Active-high
(factory default)
Active-low
2
O
N
2
O
N
0 A
Input Command Voltage
0 V
+I
pe
a
k
+I
cont
–I
pe
a
k
–I
cont
Output Current
G
a
in Applied
+V
m
a
x
–V
m
a
x
