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Alternative article: ROP521 + E11855 – Product comparison: RO1376 / ROP521
Note any deviating technical data for the selection of the alternative article and the accessories.
discontinued article
Date of discontinuation: {{"2016-03-31T00:00:00.000+02:00" | date}}


Incremental encoder with hollow shaft


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Dear customer,
Unfortunately, this data sheet is not available in the requested language. If you have any further questions, you can contact us by e-mail.

Best regards
Your ifm team

  • Defined pulse sequence for the reliable detection of rotational speeds
  • For precise position determination and linear measurement
  • Easy mounting directly on the shaft of the drive
  • Radial cable connection for use where space is restricted
  • Compact and robust housing
  • ce
  • c_nrtl_us

Technische Details
Product characteristics
Resolution 2048 resolution
Shaft design hollow shaft open to one side
Shaft diameter [mm] 12
Function principle incremental
Electrical data
Operating voltage tolerance [%] 10
Operating voltage [V] 5 DC
Current consumption [mA] < 120
Electrical design TTL
Max. current load per output [mA] 20
Switching frequency [kHz] 300
Phase difference A and B [°] 90
Measuring/setting range
Resolution 2048 resolution
Operating conditions
Ambient temperature [°C] -40...100
Max. relative air humidity [%] 98
Protection IP 64; (on the housing: IP 67; on the shaft: IP 64)
Tests / approvals
Shock resistance
200 g
Vibration resistance
30 g
MTTF [years] 190
Mechanical data
Weight [g] 725.2
Dimensions [mm] Ø 58 / L = 35.5
Materials aluminium
Max. revolution, mechanical [U/min] 12000
Max. starting torque [Nm] 1
Reference temperature torque [°C] 20
Shaft design hollow shaft open to one side
Shaft diameter [mm] 12
Shaft fit H7
Shaft material
stainless steel
Installation depth of shaft [mm] 10
Max. axial shaft misalignment [mm] 1; (max. radial shaft alignment: ± 0,05 mm)
Notes discontinued article
Electrical connection
Cable: 6 m, PUR; Maximum cable length: 100 m; radial, can also be used axially
Diagrams and graphs
Pulse diagram
Output A
Output B
0 index
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — RO1376-02 — 01.09.2010 —