Tri-axial Stepper Motor Driver

Operational Manual

Operation

3 major operational steps for DB3540L3C-RG2 stepper motor driver in

operational order as follows:

1, check whether power supply and ground are short-circuited or not by visual

inspection; power supply voltage is 24V，positive pole and negative pole are shown

in the below figure ; check whether indicator lamp （D1）of 24 V power supply

and indicator lamp (D2) of 5V power supply are light， if light normally, then take

operation step 2, if not light, please refer to annex 1.

2, Cut off power supply and connect driver to the motor parallel port, and then

power on, check whether motor is locked or whether can be turned, if locked, then

take operation step 3, if not , please refer to annex 2.

3, MACH3 or any pulse generator that gives driver pulse through the parallel port,

check whether motor runs normally, if normally, motor is driven successfully; if not,

please refer to annex 3.

Note: the above 3 operational steps are to be taken in number order; operation in

inverse order is prohibited.

Annex1：

Error Analysis 1 Analysis 2

Both D1 and D2 are off Check whether 24V

power supply is properly

connected or not

Lamps are poorly

soldered or broken

(remark 1)

D1on and D2off

Check whether D2 is

poor soldered, if not,

check whether DCDC

output voltage is 5V

Power on D2 with 5V

power supply ， if the

lamp is on, the lamp is

ok, if not, the lamp is

broken (Remark1)

D1off and D2on D1is poorly soldered

(remark 1)

D1is broken(remark1)

Remark 1： if lamps are broken or poorly soldered， and power supplies normally,

operation step 2 can be taken.

Annex2：

Error Analysis 1 Analysis 2

All the axes are not

locked

Check whether the

voltage of optical-

coupler’s front and back

ends of enabling is

normal or not

Check whether

74LS14chip and U14 is

properly

connected ， measure

voltages of 7 pin and 14

pins

Single or multiple axes

are not locked

Optical-coupler is

ok ， check whether

corresponding axes of

74LS14 chip are poorly

soldered or defectively

soldered

Check whether

corresponding pins of

74LS14 chip are

properly connected to

driver chip

Remark 2：if single or multiple axes are not locked，operation step 3 can be taken.

Annex3：

Error Analysis 1 Analysis 2

Motor doesn’t

rotate ， pulse indicator

lamp of corresponding

axis is normally on when

the pull-up resistor of

pulse optical-coupler

on corresponding axis

M is poorly soldered or

broken

Measure the front

voltage of optical-

coupler, if normal, the

corresponding pulse

optical-coupler is not

ok, if abnormal, front

there is no pulse ends of 74LS14 are

poorly soldered or

defectively soldered

Motor doesn’t rotate,

when generating pulse,

the pulse indicator lamp

of corresponding axis is

normally dim

Indicator lamp is broken

or poorly soldered

Measure the front

voltage of optical-

coupler, if normal,

the corresponding

pulse optical-coupler

is not ok, if

abnormal, front ends

of 74LS14 are poorly

soldered or

defectively soldered

Motor rotates in one

direction

Optical-coupler front

ends 74LS14 pins of

corresponding axis are

poorly soldered or

defectively soldered

Corresponding direction

optical-coupler has

problems

Motor heats up Current is too high,

adjust dial switches T1

T2

Check whether driver

chip is short circuited or

not by visual inspection

Motor squeaks strongly Adjust

attenuation，D1,D2

Setup steps for connecting MACH3

Connect the control signal port on driver to parallel port on PC, open MACH3 for

configuration. Firstly, set up ports and pins，open “ports and pins” under the menu of

“config”，as the red circle shows .

Fig. 1 configuration menu

Fig. 2 frequency configuration

Basic frequency can be set up as circle 1 shows in fig. 3，this parameter has effect

on the rotation speed of the motor. After setting up frequency, come to circle 2

for setting up pulse and direction.

Fig. 3 pulse direction configuration

In fig.4, the configuration in red circles is made based on the control signal pins of

the driver; configuration varies on different driver or interface board. Here

configuration in fig. 4 is made based on DB3540L3C-RG2.

Fig. 4 Relay and enabling configuration

Fig. 5, Pin numbers in relay and enabling configuration are also related the definition

of control signal.

f

Fig. 6 Step pulse configuration

fFig. 6 Step pulse configuration：Modification path is Config->Motor Turning

If the maximum setup output frequency is F，the maximum setup step pulse value

in above fig. 6 should not be more than that of half value of next

period，otherwise MACH3 will not retch its maximum speed.

Fig. 5 Limit switch configuration

Fig. 7 shows the pins of limit switch, here is also configurated based on the

definition of control signal.