MECHAPRO Tiny-Step Assembly Instructions

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D i m e n s i o n s D i m e n s i o n s D i m e n s i o n s D i m e n s i o n s D i m e n s i o n s
Assembly Instructions
Stepping Motor Board >Tiny-Step<
Rev. 1.0 (last updated 15.07.2008)
Functional Functional Functional Functional Functional description: description: description: description: description:
Tiny-Step is a 1 channel stepping motor driver, that can drive motors with up to 2.25 amperes
(peak) in full-, half-, fourth- or eighth-step mode. The board is based on the A3977 that
supports all features of microstep signal generation and includes the amplifier. The signal /
SLEEP can reduce motor current by 25%. The /e-STOP signal switches off the amplifier
directly. The HOME-LED signals every fourth full step for a simple signal in case steps are lost.
The board is delivered partially fitted with components (all SMD parts).

Disclaimer,

Disclaimer Disclaimer Disclaimer Disclaimer , , , , EMC-compliance EMC-compliance EMC-compliance EMC-compliance EMC-compliance
Even though all parts of the circuitry have been thoroughly checked and tested, mechapro
does not give any warranty or other assurance as to the operation or functionality of the
circuitry or the documentation.
To the full extent permissible by law we disclaim all responsibility for any damages or losses
(including, without limitation, financial loss, damages for loss in business projects, loss of profits
or other consequential losses) arising from the use or reproduction and/or operation of the
presented circuitry.
The stepper motor driver card Tiny-Step is an OEM-product for further processing by industry
or other, in electronics specialized, personal. In line with §5 of the EMC-regulation the Tiny-
Step driver card does not have to carry a CE-Label. Wiring and the individual components
being used as well as the complete environment in which the controller card is operated will
influence its EMC behaviour. Therefore, if CE-compliance is required, a system in which one or
more Tiny-Step driver cards have been installed for operation has to be evaluated as a whole
unit. Of course, when developing the circuitry for the Tiny-Step all possible aspects for an
EMC-suitable design have been taken into account.

Fitting with Components

Fitting with Components Fitting with Components Fitting with Components Fitting with Components
- Start with the small components (resistors, diodes, capacitors, ...)
- Be careful to assemble with correct polarity (diodes, electrolytic capacitors, ...)
- The ICs should be mounted on sockets as a precaution.
- A heat sink is not necessary. The amplifier is cooled by a thermal ground pad on the board. In
use, depending on the environment, it may be necessary to use an additional fan for cooling.
If the casing is already well ventilated, it may not be necessary to use an additional fan, if the
board is mounted in the air-stream.
Initial Initial Initial Initial Initial Operation Operation Operation Operation Operation
- Before first use, the assembly and all solder points should be carefully checked! Are all ICs
mounted in the correct direction? All cables on the NCS-BUS and the solder points should be
checked for short circuits.
ostermann@mechapro.de • www.mechapro.de
Adress: Theaterplatz 6-8 • 52062 Aachen • Germany