8
M540 High Performance Microstepping Driver
To
a number of built-in protections features.
hen power s
tion will be activated and power indicator LED will turn red.
rotection will be activated in case of short circuit between motor coil and ground.
rotection will be activated in case of excessive current (such as a short circuit) which may otherwise damage the
n
:
since there is no protection against power leads (
﹢
,
﹣
) reversal, it is critical to make sure that power
er will b
WM
ams illustrate connection to various kinds
Note that when two coils are parallell
speed can be
only at
Connecting to 8-Lead Motors
lead mo
tem designer in that they may be connected in series or parallel,
be used in applications where a higher torque at lower speeds is required.
W
_____________________________________________________________________________________________
8.
Protection Functions
improve reliability, the driver incorporates
a. Over-voltage
protection
upply voltage e80VDC
*
, protec
upply voltage is lower than +18VDC, th
W
When power s
e driver will not work properly.
b. Coil-ground Short Circuit Protection
P
c. Over-current
Protection
P
driver.
Attentio
supply leads are correctly connected to driver. Otherwise, the driv
e damaged instantly.
9.
Driver Connection to Step Motors
4
5
ot
0 driver can drive 4, 6, 8 lead hybrid step motors. The following diagr
of m or leads:
Figure 4: Driver Connection to Step Motor
y connected, coil inductance is reduced by half and motor
significantly increased. Serial connection will lead to increased inductance and thus the motor can be run well
lower speeds.
9.1
8
tors offer a high degree of flexibility to the sys
ying a wide range of applications.
thus satisf
Series Connection
A series motor configuration would typically
Because this configuration has the most inductance, the performance will start to degrade at higher speeds. Divide the
motor's unipolar (peak) current rating by 1.4 for the RMS current, or the motor's bipolar current rating is the RMS
current.
* For the European Market – the maximum input voltage must be limited to 70VDC to comply with CE regulations.
