ATEX certified, for your safety. Guaranteed. The EX/EY series is a range of explosion-proof, permanent magnet brushless servomotors designed for use in explosive atmospheres. EX-series synchronous servomotors, which are characterized by a robust explosion-proof housing, are able to withstand internal explosions without the risk of propagation to the nearby environment. The EY series servo motors are available with a resolver and are suitable for many ATEX environments.