MID-7604/7602 Power Drive User Guide
14
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If you are connecting multiple motors to your MID-7604/7602, verify that
the total power dissipated by the motors at any given time is less than the
total power the drive can provide. If the total power requirement exceeds
the capability of the drive at any point, the drive will provide less power to
the motors than desired until the total power requirement drops back down.
The MID-7604/7602 may overheat under continuous operation with loads
that exceed specified limits.
Caution
A fire safety hazard exists when the total power dissipated by the motors exceeds
80 W continuous for a sustained period of time.
To determine the maximum total power dissipation of all of the motors
combined, add up the maximum power each motor can dissipate. If this
value is less than or equal to 80 W continuous, you will not exceed the
capabilities of the MID-7604/7602.
If the value is greater than 80 W continuous, you may still be within the
operating capabilities of the MID-7604/7602, since it is unlikely you will
run all of your motors simultaneously at their maximum levels. Make a
reasonable estimation of the maximum power your motors will require at
any given time and verify that this value is less than 80 W continuous.
You can configure the MID-7604/7602 stepper drivers in a current
reduction mode on a per-axis basis. This configuration is useful to
minimize motor heating when you are not stepping. With current reduction
1.00
0.28
0.85
0.27
0.70
0.25
0.60
0.24
0.55
0.23
0.50
(factory default)
0.20
Table 3.
Peak Output Current DIP Switch Setting (Continued)
Switch
Peak Output (A)
Switch
Peak Output (A)
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
1
O
N
2 3 4
