STEVAL-SPMD150V2 STMicroelectronics, STEVAL-SPMD150V2 Datasheet - Page 8
![BOARD EVAL SPMD150](/photos/9/9/90921/steval-spmd150v2_sml.jpg)
STEVAL-SPMD150V2
Manufacturer Part Number
STEVAL-SPMD150V2
Description
BOARD EVAL SPMD150
Manufacturer
STMicroelectronics
Series
EASY POWER™r
Type
Motor / Motion Controllers & Driversr
Specifications of STEVAL-SPMD150V2
Main Purpose
Power Management, Motor Control
Embedded
No
Utilized Ic / Part
SPMD150
Primary Attributes
2-Ph Bipolar Stepper Motors
Secondary Attributes
Remote Shutdown
Input Voltage
12 V to 48 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free by exemption / RoHS compliant by exemption
Other names
497-10049
Note:
8/15
Stepper motor driver
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Holding current is turned off (bridge completely disabled) whenever the disable button is
clicked.
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After the basic operation of the system has been verified, the acceleration rates, top speed,
and current settings can be adjusted to see how the motor responds.
Running speed: set running speed to about 100 steps/sec
Deceleration rate: set deceleration rate to about 1000 steps/sec
Acceleration current: set acceleration current to about 25%. This is an initial guess as
to the required setting and may need further adjustment. Generally higher acceleration
rate settings require higher acceleration current settings so that the stepper motor does
not start to "slip poles" and fall behind the desired position. Since we have initially set
the acceleration rate setting quite low, 25% is probably adequate.
Running current: set the running current to 25%. In practice the running current can
often be set to a lower value than the acceleration current since the torque requirement
is generally less during the constant speed part of the move. A lower running current
setting can help to keep the device and the motor running cooler.
Deceleration current: set the deceleration current to 25%. Since friction aids in
decelerating the motor it may also be possible to set the deceleration current lower.
Holding current: set the holding current to 25%. Whenever the motor is stopped (after a
run,) this level of current circulates in the motor so that it holds position against any
mechanical disturbance. In the case of a strong static load (perhaps a gravity load of
some sort) it may be necessary to increase this setting. If not much holding torque is
required, then the setting can be reduced so that operating temperatures can be held to
a minimum.
Run: make sure that the motor is free to turn in either direction and click the run button.
The motor should quickly come up to speed ((100 steps/sec)/(1000 steps/sec
sec.). To change the motor direction, click the direction toggle switch. If the motor does
not run click the stop button, increase all four current settings to 50%, and click run
button. If the motor still does not run an oscilloscope and current probe should be used
to observe the motor current.
Stop: click stop to stop the motor
Doc ID 15599 Rev 2
2
2
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UM0696