Q-4
MD5 Series
Function selection DIP switch
TEST
Self diagnosis function is for motor and driver test.
This function makes the motor rotate with 30rpm in full step. Rotation speed varies with resolution settings.
Rotation speed = 30rpm/resolution
In 1-pulse input method, it rotates to CCW, and in 2-pulse input method, it rotates to CW.
※
Be sure that the TEST switch is OFF before supplying the power.
If the TEST switch is ON, the motor operates immediately and it may be dangerous.
1/2 CLK
1/2 CLK switch is to select pulse input method.
1-pulse input method: CW → operating rotation signal input, CCW → rotation direction signal input ([H]: CW, [L]: CCW)
2-pulse input method: CW → CW rotation signal input, CCW → CCW rotation signal input.
C/D (auto current down)
This function is to reduce the current provided for motor automatically for preventing severe motor's heat when motor stops.
If motor RUN pulse is not applied, the current provided for motor reduces as the set STOP current.
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Be sure that when motor RUN current is reduced, the stop torque of motor also reduced.
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Set the STOP current by the STOP current switch.
Setting RUN current
5-Phase Micro Stepper Motor Driver [MD5-HD14]
Resolution switch
RUN current switch
STOP current switch
Function
selection
DIP switch
Power indicator
Input
terminal
Zero
output
Power
terminal
Motor
connection
terminal
Switch No. 0 1 2 3 4 5 6 7 8 9 A B C D E F
Current
(A/Phase)
0.4 0.5 0.57 0.63 0.71 0.77 0.84 0.9 0.96 1.02 1.09 1.15 1.22 1.27 1.33 1.4
Switch No. 0 1 2 3 4 5 6 7 8 9 A B C D E F
% 27 31 36 40 45 50 54 58 62 66 70 74 78 82 86 90
Unit Description
No. Name Function
Switch position
ON OFF (default)
1 TEST Self diagnosis function 30rpm rotation Not use
2 1/2 CLK Pulse input method 1-pulse input method 2-pulse input method
3 C/D Auto current down Not use Use
Setting RUN current is for the current provided for motor when the motor runs.
※
When RUN current is increased, RUN torque of the motor is also increased.
※
When RUN current is set too high, the heat is severe.
※
Set RUN current within the range of motor's rated current according to its load.
※
Change RUN current only when the motor stops.
Setting STOP current is for the current provided for motor when the motor stops for preventing severe motor's heat.
This setting is applied when using C/D (current down) function.
Setting value of STOP current is percentage (%) ratio of the set RUN current.
E.g.) Set RUN current as 1.4A and STOP current as 40%.
STOP current is set as 1.4A×0.4=0.56A
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When STOP current is decreased, STOP torque of the motor is also decreased.
※
When STOP current is set too low, the heat is lower.
※
Change STOP current only when the motor stops.
Setting STOP current
Functions
※
Refer to page Q-3 for
the specifications.
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