Q2BYG403MD Driver User’s Manual
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(1) Current setting
(Ipeak= Irms×1.4):
Irms(A)
SW1
SW2
SW3
1.2 OFF
OFF
OFF
1.6 ON OFF
OFF
2.0 OFF
ON OFF
2.4 ON ON OFF
2.8 OFF
OFF
ON
3.0 ON OFF
ON
3.6 OFF
ON ON
4.2 ON ON ON
(2)
Subdivision setting:
Subdivisions SW5
SW6
SW7
SW8
1
OFF OFF OFF OFF
2
ON OFF OFF OFF
4
OFF ON OFF OFF
8
ON ON OFF OFF
16
OFF OFF ON OFF
32
ON OFF ON OFF
64
OFF ON ON OFF
128 ON ON ON OFF
256 OFF OFF OFF ON
5
ON OFF OFF ON
10
OFF ON OFF ON
25
ON ON OFF ON
50
OFF OFF ON ON
100 ON OFF ON ON
150 OFF ON ON ON
200 ON ON ON ON
(3) Quiescent half current setting
Set half/full current (SW4=OFF: half current; SW4=ON: full current).
For self tuning setting of parameters, move the SW4 switch once in two
seconds to realize the self tuning of motor parameter and Driver
parameter.