9
November 2006
Setting the Output Current
The output current on the MBC25PG1(L) is set by the on-board potentiometer R6 (Refer to Dimensions/Jumper and
Potentiometer Locations). This current adjust potentiometer determines the per phase peak output current of the
driver. This relationship between the output current and the potentiometer setting is as follows:
Dip Switch Functions
SW1
Function
Dip Switch 1
Least Significant Bit for Microstepping Divisor
Dip Switch 2
Most Significant Bit for Microstepping Divisor
Dip Switch 3
Reduced Current Enabled
Potentiometer Settings
Peak Current
Potentiometer Setting
0.5A
0%
0.7A
10%
0.9A
20%
1.1A
30%
1.3A
40%
1.5A
50%
1.7A
60%
1.9A
70%
2.1A
80%
2.3A *
90%
2.5A *
100%
Microstep Modes (Switch Settings)
Microstep Switch Settings
Microstep Mode
Dip Switch 1
Dip Switch 2
Dip Switch 3
Auto Reduce Current
Full Step
On
On
Off
Disabled
Half Step
Off
On
Off
Disabled
Quarter Step
On
Off
Off
Disabled
Eighth Step
Off
Off
Off
Disabled
Full Step
On
On
On
Enabled
Half Step
Off
On
On
Enabled
Quarter Step
On
Off
On
Enabled
Eighth Step
Off
Off
On
Enabled
*
Warning:
For the MBC25PG1 your system
must have airflow to dissipate heat. Failure to do
so may cause a driver failure. The MBC25PG1L
will work upto 2.5A without airflow.
July 2018
July 2018
