Omron E6B2-CWZ6C Incremental Rotary Encoder 2,000 P/R

E6B2-CWZ6C 2000P/R 0.5M incremental rotary encoder: what the code means

The Omron E6B2-CWZ6C 2000P/R 0.5M is a 40 mm diameter incremental rotary encoder with 2,000 pulses per rotation, a NPN open-collector output and a 0.5 m pre-wired cable. Seven Star LLC supplies the E6B2-CWZ6C 2000P/R 0.5M in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer. This is the NPN open-collector code with the widest supply window, which is why it is the common choice for general PLC high-speed counter inputs wired for sinking signals.

How to read the ordering code:

• E6B2-C is the general-purpose 40 mm incremental encoder series with up to 2,000 pulses per rotation.
• CWZ6C encodes the output and supply: NPN open-collector, 5 VDC −5% to 24 VDC +15%.
• 2000P/R is the resolution in pulses per rotation.
• 0.5M is the standard 0.5 m pre-wired cable.

Outputs are phases A, B and Z, with a 90 degree phase difference between A and B so that direction can be determined.

E6B2-CWZ6C 2000P/R 0.5M technical specifications

Data are from the manufacturer E6B2-C datasheet; the encoder is supplied with a coupling, hexagonal wrench and instruction manual.

How the E6B2-CWZ6C generates its pulses

Inside the housing a slotted disc turns with the shaft while a light source and photo-sensors read it. Each slot produces pulses on phases A and B, offset by a quarter period, and the Z phase gives one reference pulse per rotation. Counting A and B edges gives position and the phase order gives direction.

At 2,000 pulses per rotation the E6B2-CWZ6C 2000P/R 0.5M produces 2,000 A-phase pulses for each shaft turn. The datasheet formula for the maximum electrical response speed is maximum response frequency divided by resolution multiplied by 60. With 100 kHz this gives 3,000 r/min. This electrical limit is below the 6,000 r/min mechanical maximum, so the electrical response frequency is what restricts speed on this resolution.

If the shaft turns faster than the electrical limit, the encoder will not follow electrically even though it is mechanically safe, so check the speed of your machine at maximum production rate.

Where the E6B2-CWZ6C 2000P/R 0.5M fits and related part numbers

The E6B2-C range uses the same 40 mm body and servo-style flange for four output types: NPN open collector (CWZ6C), PNP open collector (CWZ5B), voltage (CWZ3E) and line driver (CWZ1X). Neighbouring codes in the family are E6B2-CWZ5B (PNP), E6B2-CWZ3E (voltage output), E6B2-CWZ1X (line driver).

The E6B2-CWZ6C 2000P/R 0.5M is best matched to sinking (NPN) counter or PLC inputs, with a pull-up inside the input card. Accessories listed in the datasheet include couplings (E69-C06B is supplied, with E69-C68B, E69-C610B and a metal E69-C06M available), flanges (E69-FBA, E69-FBA02) and a servo mounting bracket (E69-2). Resolution is ordered by writing the pulse count in the model, for example E6B2-CWZ6C 1000P/R 0.5M.

Selection and ordering checklist for E6B2-CWZ6C 2000P/R 0.5M

• Select the resolution that gives the position accuracy you need: 2,000 P/R here.
• Check the maximum electrical response speed (3,000 r/min) against the maximum shaft speed.
• Match the output type to the counter or PLC input: sinking (NPN) counter or PLC inputs, with a pull-up inside the input card.
• Check the supply: 5 VDC −5% to 24 VDC +15%.
• Confirm the shaft diameter and coupling and that the shaft loading limits are not exceeded.
• Check IP50 protection is sufficient, or plan an enclosure for dusty or wet places.
• State 0.5 m pre-wired cable or ask about a longer cable.

Installation, commissioning and maintenance of the E6B2-CWZ6C 2000P/R 0.5M

Mount the body on the flange or servo bracket and connect the shaft with a flexible coupling. Do not use rigid couplings, because misalignment loads the bearings; the permissible shaft load is 30 N radial and 20 N thrust. Use the supplied hexagonal wrench to fix the coupling.

Wire the brown conductor to supply positive, blue to 0 V, and the black, white and orange wires to A, B and Z for single-ended models. Keep signal cables away from motor power cables, and ground the shield. On commissioning, rotate the shaft by hand and check the counter increments in the intended direction; swap A and B if it counts backwards.

Maintenance is limited to checking couplings, cable strain relief and enclosure sealing. The encoder has an inrush current of about 9 A for around 0.3 ms at power-up, so allow for that in small supplies.

Typical applications in Oman and the GCC

Incremental encoders of this class are widely used for length measurement, positioning and speed feedback in packaging, textile, conveyor and machine-tool applications. In Oman and the GCC they appear on conveyor drives, cutting lines and filling machines. As the case is rated IP50 only, install it inside a panel or a dust-tight machine housing in sandy or humid locations.

• Length and speed feedback on conveyors and cut-to-length lines.
• Position feedback on rotary tables and indexing drives.
• Speed monitoring of motor-driven machinery with a PLC high-speed counter.

E6B2-C output family table

Resolutions from 10 up to 2,000 pulses per rotation are listed for the family; the standard values stocked vary by output type, so confirm the resolution with the part number.

Information to send with an RFQ for E6B2-CWZ6C 2000P/R 0.5M

• Full part number E6B2-CWZ6C 2000P/R 0.5M and quantity.
• Counter or PLC model and input type.
• Maximum shaft speed and required resolution.
• Shaft or coupling size.
• Cable length if not 0.5 m.
• Panel or machine environment.

Documents and quotation

The manufacturer datasheet for the E6B2-C series is attached on this page with dimensions, wiring and accessories for E6B2-CWZ6C 2000P/R 0.5M.

Send the part number, quantity and delivery point in Oman or the GCC and Seven Star LLC will confirm availability. We are an independent supplier and not affiliated with the manufacturer.