Stellar SR55 Soft Starter Firmware version, V59.35, (SWI-SGY-USB-V5935) includes the following changes:
The energy saving feature, iERS is OFF by default. Customers must turn iERS ON, to enable the feature. When enabled the iERS software has been enhanced to improve relay switching strategies. Customers are encouraged to upgrade all SR55 soft starters to this latest firmware version.
Stellar SR55 soft starters beginning with serial number A352838 have version V59.35 installed.