SEW-Eurodrive MOVIPRO PHC2 Series, Operating Instructions Manual, Page: 161 / 188

9
Service
Reference travel after device or encoder replacement
Operating Instructions – MOVIPRO
®
PHC2.A-A..M1-E45C-C5
161
9.5 Reference travel after device or encoder replacement
9.5.1 Incremental encoder
If incremental encoders are used for positioning, a reference travel must be performed
after device startup. This way, no special measures are required.
9.5.2 Absolute encoder
The device stores the position of absolute encoders with 32 bit. This allows for repres-
enting a larger absolute area than with an encoder with typical 12 bits in the single-
turn range and 12 bits in the multi-turn range.
Perform a reference travel if you replaced the encoder.
9.5.3 Linear encoder systems
If you replace an absolute linear encoder system without encoder overflow in such a
way that the encoder system provides the same values as before the replacement, a
reference travel is not required.
9.5.4 HIPERFACE
®
encoders
With HIPERFACE
®
encoders, you can use parameter P948 to specify whether or not a
reference travel is required after an encoder replacement.
9.6 Electronics Service by SEW‑EURODRIVE
If you are unable to rectify a fault, contact SEW‑EURODRIVE Service. For the ad-
dresses, refer to www.sew-eurodrive.com.
When contacting SEW‑EURODRIVE Service, always specify the following information
so that our service personnel can assist you more effectively:
• Information on the device type on the nameplate (e.g. type designation, serial
number, part number, product key, purchase order number)
• Brief description of the application
• Fault message on the status display
• Nature of the fault
• Accompanying circumstances
• Any unusual events preceding the problem
26596598/EN – 10/2020