Cost-Effective Alternative to Current Measurement Clamps for Motor Control Design
Trinamic Motion Control GmbH & Co. KG today announced the TMCM-0013-xA current sense boards, a lab tool designed to simplify the measurement and visualization of two-phase motor currents. Suited for small electric motors such as stepper motors, BLDC motors, or dc motors, the easy-to-use boards can be connected to typical lab oscilloscopes replacing expensive current probes.
The TMCM-0013-xA current sense boards are perfect for tuning a setup. They provide a cost-effective way for developers to measure currents, tune the chopper, keep an eye on the current, or calibrate a setup.
"Over the years, the drop in prices for electronic components has contributed to more and more mass-produced applications, and stimulated startups and maker movements around the world," explains Michael Randt, CEO of Trinamic. "The TMCM-0013 current sense board supports both professional and hobbyist developers by giving them access to plug-and-play components, and the tools needed to test and tune their setups."
Offered in 2A, 3A, and 6A versions, the current sense board can be connected to a scope via SMA-2-BNC cables or standard probe clamps and placed in between the motor driver and motor. Two phases are measured using galvanically isolated current transducers, characterized by a high linear range and bandwidth, and the board can be powered via USB-C or a 7- to 35-V power supply.
While each version of the TMCM-0013-xA has a maximum measurement range of 19.2A, the difference is in the linear range. The motor phase current measurement board TMCM-0013-2A has a 2A linear range, TMCM-0013-3A has a 3A linear range, and the TMCM-0013-6A has a 6A linear range.
All boards are suited for both BLDC motors and dc stepper motors. When measuring the current of BLDC motors, the third phase current can be defined mathematically with the oscilloscope. In addition to measuring motor currents, the TMCM-0013-xA is also suited for other current measurements, including as the supply current.
The TMCM-0013-xA will be available in mid-October 2019.
Features and Benefits:
- For measurement of two-phase motors
- Power supply via USB-C or dedicated power supply from 7- to 35-V
- Linear range of 2A, 3A, or 6A
- 2A max measurement range
- Connects to an oscilloscope via SMA-2-BNC cables or standard probe clamps
