Controls bipolar stepper motors in constant-current mode with a 15 kHz switching frequency.
, it is essential to distinguish between the two primary versions:
The MT3021 is a critical used primarily in commercial and industrial HVAC systems, specifically for Daikin-McQuay chillers . Acting as an I/O expansion module for the MicroTech III or Siemens Climatix control systems, it ensures precise refrigerant flow control to maximize energy efficiency and protect the compressor. Key Technical Specifications
Includes a built-in manual override feature for emergency operation and troubleshooting. Critical Versions: MCQ vs. STD When sourcing or servicing the Go to product viewer dialog for this item.
The MT3021 manual outlines several key functions for maintaining system stability:
Capable of programmable speeds and acceleration (up to 500 steps per second) to respond quickly to cooling demand changes.
The module is designed for compatibility with standard refrigerants and rigorous industrial environments: Optimized for R-410A and R-407C .
For those needing specialized parts, authorized distributors like PTAC Solutions or Blackhawk Supply provide full technical documentation and compatibility lists.
