User Manual

PD42-x-1140 Hardware Manual (V1.03 / 2018-JAN-25) 21

Maximum current of the TMCM-1140 driver electronics has been selected in order to meet the max. / rated

current of the stepper motor which is part of the PD42-x-1140 PANdrive. Nevertheless, please monitor motor

temperature in application – especially when selecting high current settings for longer time without cooling the

motor appropriately. Motor temperature should not rise above 80°C in application. If the full current and full

torque is required in combination with high duty cycles it is recommended to use a metal frame (aluminium

etc.) for mounting the PANdrive™. This will help with distributing motor heat via stepper motor front flange.

In addition to the settings in the table the motor current may be switched off completely (free-wheeling) using

axis parameter 204 (see TMCM-1140 firmware manual).

6 Reset to Factory Defaults

It is possible to reset the PD42-x-1140 to factory default settings without establishing a communication link.

This might be helpful in case communication parameters of the preferred interface have been set to unknown

values or got accidentally lost.

For this procedure it is necessary to disassemble the PANdrive™ and shorten two pads on the bottom side of

the printed circuit board (see Figure 6.1).

Please perform the following steps:

1. Power supply off and USB cable disconnected

2. Short two pads as marked in Figure 6.1

3. Power up board (power via USB is sufficient for this purpose)

4. Wait until the on-board red and green LEDs start flashing fast (this might take a while)

5. Power-off board (disconnect USB cable)

6. Remove short between pads

7. After switching on power-supply / connecting USB cable all permanent settings have been restored to

factory defaults

Short these two pads

Figure 6.1 Reset to factory default settings