The standard Siemens Climatix version. It lacks the built-in UPS, meaning it may not provide the same fail-safe protection unless the external system provides backup power. Operational Highlights
Capable of programmable speeds and acceleration (up to 500 steps per second) to respond quickly to cooling demand changes.
This is the OEM version specifically for Daikin-McQuay. It includes UPS backup (ultracapacitors) to ensure the EEV closes safely during a power failure, preventing refrigerant flood-back.
Controls bipolar stepper motors in constant-current mode with a 15 kHz switching frequency.
Performs diagnostics at both startup and during operation to detect short circuits or motor failures.
The standard Siemens Climatix version. It lacks the built-in UPS, meaning it may not provide the same fail-safe protection unless the external system provides backup power. Operational Highlights
Capable of programmable speeds and acceleration (up to 500 steps per second) to respond quickly to cooling demand changes. mt3021 manual
This is the OEM version specifically for Daikin-McQuay. It includes UPS backup (ultracapacitors) to ensure the EEV closes safely during a power failure, preventing refrigerant flood-back. The standard Siemens Climatix version
Controls bipolar stepper motors in constant-current mode with a 15 kHz switching frequency. mt3021 manual
Performs diagnostics at both startup and during operation to detect short circuits or motor failures.