Designated use

• The safety encoders are designed for use with the described motors. It is not permitted to mount them on other motors.
• When installed in machines, starting the designated operation is prohibited until you have determined that the machine complies with the local laws and directives. Machinery Directive 2006/42/EC in particular must be followed in the respective validity.
• Before starting the designated use and during the entire operation, make sure that the system complies with the specifications of this documentation, and in particular the technical data.
• Safety encoders can also be operated outside functional safety (FS) without safety-relevant monitoring/evaluation by evaluation electronics. Also in this case, the specifications of the documentation, especially the technical data, must be adhered to. If the safety encoder is operated outside the permitted operating limits, future use as part of a safety function is no longer permitted.
• In order to determine the achieved safety integrity level (SIL) or performance level (PL) of a system's safety functions, the system manufacturer must perform an overall evaluation. This document contains the product-related specifications necessary for the evaluation.
• When using a safety encoder in combination with a motor brake, the brake may only be used as a holding brake. Braking during operation is not permitted. The designated use of the brake is to activate the brake in an idle state (brake application speed < 20 min^-1). Emergency stop braking operations from higher motor speeds are permitted. SEW‑EURODRIVE recommends stopping the drive with stop category 1 in accordance with EN 60204-1.
• Operation of the safety encoders is permitted at ambient temperatures of -40 to +60 °C.
• The safety encoders are rated for the following installation altitudes:
• ES7S, AS7W, AS7Y: 4000 m above sea level
• EG7S, AG7W, AG7Y: 4000 m above sea level
• EK8S, EK8W, AK8W, AK8Y: 4000 m above sea level
• AK8H: 2000 m above sea level
• EK8Z, EK9Z, AK8Z: 3800 m above sea level
• EI7C FS: 3800 m above sea level
• Installation altitudes that deviate from these and derating of the drives or frequency inverters must be noted.
• For AS7W, AG7W, AS7Y, AG7Y, AK8Y, EK8W, AK8W, AK8H, EK9Z, and AK8Z safety encoders, only the incremental interface is certified in accordance with the PL d/SIL 2 approval. The absolute interface must not be used to implement safety functions without further measures in place.
• SEW-EURODRIVE recommends activating the monitoring functions lag error, speed, and encoder monitoring when configuring the inverter.
• The safety encoders described in this documentation are not capable of independently bringing about a safe state in the machine.
• In the event of a failure or malfunction of the safety encoder, injury and damage to the system or operating equipment must be prevented by means of suitable measures taken in the overall system.
• Protection against unintentional or automatic restarting of the machine must be ensured in the overall system, if necessary.
• The safety encoders described in this documentation are intended to be used in functional safety and are mounted on the motor. Fault exclusion in compliance with EN 61800‑5‑2 can be assumed on the mounting of the safety encoder.
• Motors with a safety encoder are not suitable for operation in areas with increased vibration stress of level 1 (vibration level 1).