JinTan SiHai Electric Engineering Factory
 
SH20611D Stepping Motor

I、Summarize

Based on the original stepping motor driver, we developped the 20611D type stepping motor driver. This driver owns many advantages such as lower noise, higher efficiency, lower temperature rise, convenient settings, nicer running characteristic and so on.

 
II、The using and instruction of the motor driver

 
 

input power wiring point:

Single external power supply link AC 50V~110V 3A

Warning：The value of the power supply shouldn’t be over this range.

For two-phase four-wire motor：

phase

A+

A-

B+

B-

Wire

Red

Green

Yellow

Blue

For four-phase six-wire motor:

phase

A+

A-

NC

B+

B-

Wire

Red

Green

White
Black

Yellow

Blue

For four-phase eight-wire motor, there are two modes
i.shunt-wound

Phase

A+

A-

B+

B-

Wire

Red(L)
Green(S)

Green(L)
Red(S)

Yellow(L)
Blue(S)

Blue(L)
Yellow(S)

ii.series-wound

Phase

A+

A-

Nc1

B+

B-

Nc2

Wire

Red
(L)

Green
(L)

Red(S)
Green(S)

Yellow
(L)

Blue
(L)

Yellow(S)
Blue(S)

Warning：Motor’s wires mustn’t be connected wrongly, Otherwise, the driver will be mangled.
Input signals
The inner interface circuit of the SH20611D are segregated by optically coupled isolators.
There are three connecting mode between the controller and the driver.
i. Differential

ii.Common-cathode

iii.Common-anode

Signal Amplitude

R

5V

---

12V

680Ω

24V

1.8KΩ

DIR：Input port of the direction signal. High/low level control the CW/CCW of motor. The changing edge of the signal must be at least 2.5us later or earlier than the falling edge of CP;
FREE: Free signal (active low). when this input end is low level，there will be no holding torque of the motor.
CP： Pulse signal input. active by the falling edge，the highest response frequency can be 200kHz，low level pulse width should be not less than 2.5us。
Warning：Input signal must have enough current, (Currently, TTL, COMS signal are not drive firsthand). Otherwise, System can not run normally.
* phase current and subdivision number setting：
Shift switch is adopted to set phase current and subdivision number in SH20611D driver. There-into, Switch 5 is half phase-current (ON means full current , OFF means half), switch 6 is the setting of single or double pulse(ON show single pulse CP,DIR; OFF show double pulse CW,CCW). See Table2，Table3.After the subdivision of driver is set, the step angle in motor is equal to whole step angle divided by subdivision number. For example：if subdivision number is set to 18 and the motor is 2-phase，its subdivision step angle is 1.8°/18=0.1°。
Warning：shift switch ON=0，OFF=1.

Phase current(bit 1 2 3 4)

1 2 3 4

Value

1 2 3 4

Value

0 0 0 0

0.38A

1 0 0 0

3.38A

0 0 0 1

0.75A

1 0 0 1

3.75A

0 0 1 0

1.13 A

1 0 1 0

4.13A

0 0 1 1

1.50A

1 0 1 1

4.50A

0 1 0 0

1.88A

1 1 0 0

4.88A

0 1 0 1

2.25A

1 1 0 1

5.25A

0 1 1 0

2.63A

1 1 1 0

5.63A

0 1 1 1

3.00A

1 1 1 1

6.00A

Table 2

 

subdivision(bit 7 8 9 10)

78910

Number

78910

Number

0 0 0 0

1

1 0 0 0

18

0 0 0 1

2

1 0 0 1

20

0 0 1 0

4

1 0 1 0

32

0 0 1 1

5

1 0 1 1

40

0 1 0 0

6

1 1 0 0

50

0 1 0 1

8

1 1 0 1

64

0 1 1 0

10

1 1 1 0

128

0 1 1 1

16

1 1 1 1

256

Table 3

III、Installation Dimension：
Disperse heat by compelling structure is adopted, so when installing, please keep enough space to elimination of heat when the driver installed (unit: mm)

 

IV. Signal indication

 

Phenomenon

Case

Solutions

The FLT twinkles red (over current)

i. The motor wires are shortcut.
ii. The motor is broken.

i. Examine the motor wires.
ii. change the motor.

The FLT twinkles red and green. (over voltage)

i. The power supply is over the range.

i. Turn down the power supply.

The FLT and CP are orange. (under the lowest voltage)

i. The supply is too low.

i. Rise the power supply.

The CP twinkles green and orange.
(over temperature)

i. The temperature of the driver is too high.
ii. The temperature of surroundings is too high.

i. Enlarge the proportion of radiator.
ii. Lower the temperature of surroundings.