Startup of explosion-proof AC asynchronous motors of category 2 (94/9/EC)
Explosion-proof AC motors from SEW-EURODRIVE that are taken into operation with MOVITRAC® B must be approved for such operation according to the nameplate and EC type examination certificate.
A certified safety function is used in conjunction with temperature sensors in the motor to provide for a safe operation in potentially explosive areas. The current limitation function in MOVITRAC® B prevents the activation of the safety device, i.e. the motor is protected against impermissible overheating (→ following figure).
Use the MOVITOOLS® MotionStudio software for startup. During startup, parameters P560 – P566 are automatically activated for SEW motors selected and approved for Ex operation.
After startup, P560 can only be activated if a motor approved for Ex operation has been started up beforehand.
After motor startup, current limitation I1 is active. Current limitation I2 determines the current permanently permitted (shaded area)
You can document the startup parameters and values with MOVITOOLS® MotionStudio. They are displayed in the "ATEX information" window.
INFORMATION
