Tallinn Science Park Tehnopol,
Akadeemia tee 21/6, Tallinn 12618, Estonia Phone: + 372 6559914,
e-mail: sale@smd.ee
url: http://smd.ee
·If the tick box “Read data when connected” all actual parameters will be read from the controller and displayed at the program
interface after connection. Clear the tick box if the control parameters were prepared in advance and if it is needed to write new
prepared parameters to the controller.
·In the menu “Connect” choose the COM port – the connection with the controller will be established. The controller turns to the
control setting mode.
·Adjust necessary motor control parameters (see the section 6.2).
·Write new settings to the controller – use menu “Write setup” - > “SMD-4.2DIN ver.2”.
·Turn the controller to the operation mode – use menu “Enable”.
6.2.Description of controller settings
·Mode –motor control mode
·Current or Voltage –phases commutation mode
·Microstep –microstepping mode
·Stop Current –holding current
·Accel –acceleration value
·Accel – deceleration value
·Buzzer ERROR – turn on / turn off of byzzer sound
·Invert EN – invertion of signal ENABLE (at the input EN+)
·Holding current – turn on / turn off holding current
·Select current – setting of current per phase for current commutation mode (if “Current or Voltage” is selected as “Current
mode”)
·Constant speed (CSM*) – setting of a constant speed value for control mode “Constant speed (CSM)”
·Setup motor (Voltage mode) – selection of a motor type for voltage commutation mode (if “Current or Voltage” is selected as
“Voltage mode”)
·Advanced settings for Voltage commutation mode (if “Current or Voltage” is selected as “Voltage mode”) - see the section 6.3.
6.3. Advanced settings for Voltage commutation mode:
!!! These settings must be done just by experienced users! Wrong parameters can cause incorrect operation or lead to
damage of the motor and controller!
To set fine settings of the motor, tick the point “Set value**”.
Set exact motor parameters at the corresponding fields.
Write new settings through menu “Write setup” - > “SMD-4.2DIN ver.2”
7. Operation order
1. Make sure the power supply is turned off.
2. Make assembly and connection according to the section 5.
3. Set controller operation parameters: motor control mode (current or voltage), operation current (for current control mode) or motor
model (for voltage control mode), holding current, microstepping mode and other necessary parameters (please, refer to the section
6).
Current control mode – during the motor control the target parameter is a maximum operation current given to a motor phase. If use
this control mode, it is possible to connect any motor to the controller under the condition of a correct current setting (use the menu
of the controller) in an available range 0.1 – 4.2A. The current motor control mode performs better torque and high rotation speed,
but it is limited with a maximum microstepping division 1/16;
Voltage control mode – performs smooth motion and provides microstepping division up to 1/128. However, rotation speed and
torque are less in comparison with the current control mode. This control mode is only applicable to the exact list of motor models.
The models list resides in the controller memory (please, refer to the section 6.3).
·If used pulse position control mode (Step / Dir), give a sequence of signals «STEP» (pulse), «DIR» (level) and «ENABLE».
High level of the signals – 4..5VDC (24VDC*), low level - 0..1VDC.
One step (or microstep) executes as front edge of the voltage pulse at the «STEP» input. Direction switches by changing voltage level at
the «DIR» input. The motion is enabled if the signal to «ENABLE» input is given. The signals oscillogram is shown on fig.9.
Fig.9. «STEP», «DIR» and «ENABLE» signals order and duration
**Please, connect additional current limiting resistance if use high level signal +24VDC instead of 5VDC: 3KOhm for STEP input, 1KOhm
