![]()
Global
These are navigation links to move inside this page.
Multi-turn High-precision Absolute Rotary Encoder
Ideal for Out-of-step Detection of Stepping Motors and Position Control of Rotors and Unloaders.
![]()
Quick links OMRON IA Rotary Encoders in your country.
Please contact Europe headquarters.
Ratings and Specifications
| Model | E6C-NN5C E6C-NN5CA | E6C-NN5C-C E6C-NN5CA-C | |
| Power supply voltage | 12 VDC -10% to 24 VDC +10%, ripple (p-p): 5% max. | ||
| Current consumption *1 | 80 mA max. | ||
| Resolu- tion | Single-turn absolute | 500 divisions | |
| Multi-turn absolute | -128 to 127 turns *2, *3 | ||
| Rotational limitation at power failure | ±80° *4 | ||
| Output | Output code | Binary | |
| Alarm output | Counter overflow output *5 | ||
| Output configuration | NPN open-collector output | ||
| Output capacity | Applied voltage: 30 VDC max. Sink current: 10 mA max. (counter overflow output: 30 mA) Residual voltage: 0.4 V max. | ||
| Logic | Negative logic | ||
| Direction | Code increases for CW (when viewed from end of shaft) | ||
| Input | Input signals | Single-turn data reset, multi-turn data reset *6 | |
| Input current | 1 mA max. | ||
| Input logic | Low active, normally open | ||
| Input time | 100 ms min. | ||
| Maximum response frequency | 12.5 kHz | ||
| Rise and fall times of output | 1 μs max. *7 | ||
| Starting torque | 2.9 mNm max. | ||
| Moment of inertia | 1.5 × 10-6 kgm2 max. | ||
| Shaft loading | Radial | 30 N | |
| Thrust | 20 N | ||
| Maximum permissible speed | 1,500 r/min | ||
| Ambient temperature range | Operating: -10 to 55°C (with no icing), Storage: -25 to 65°C (with no icing) *8 | ||
| Ambient humidity range | Operating/Storage: 35% to 85% (with no condensation) | ||
| Insulation resistance | 20 MΩ min. (at 500 VDC) between current-carrying parts and case | ||
| Dielectric strength | 500 VAC, 50/60 Hz for 1 min between current-carrying parts and case | ||
| Vibration resistance | Destruction: 10 to 500 Hz, 150 m/s2 or 2-mm double amplitude for 11 min 3 times each in X, Y, and Z directions | ||
| Shock resistance | Destruction: 1,000 m/s2 3 times each in X, Y, and Z directions | ||
| Degree of protection | IEC 60529 IP50 | ||
| Connection method | Pre-wired Models (Standard cable length: 2 m) | Connector Models (Standard cable length: 2 m) | |
| Material | Case: ABS, Main unit: PPS, Pressboard panel: SUS304, Shaft: SUS420J2 | ||
| Weight (packed state) | Approx. 400 g | ||
| Accessories | Instruction manual | ||
Note: The data outputs will all turn OFF as soon as the main power supply turns OFF. Data is not saved.
*1. An inrush current of approximately 8 A will flow for approximately 6.5 ms when the power is turned ON.
*2. Negative values for multi-turn absolute values are express as two's complements (see code at right).
*3. Multi-turn data will change approximately 10 μs after single-turn data. Allow for this when reading data.
*4. When the power supply is interrupted, multi-turn detection is not performed and multi-turn data is
compensated by comparison to the data that existed before the power supply was interrupted. If a rotation
operation exceeding ±80° is performed from the position when the main power supply turns OFF, correct
multiturn data will be lost. The application must be set up so that no rotation operations are performed that exceed this stipulation.
*5. Output when the multi-turn counter exceeds the -128 to 127 counting range. This error flag will be reset if the count data returns to within the counting range.
*6. The single-turn data and multi-turn data reset signals can be input independently to reset the single-turn data to address 0 and the multi-turn data to 0 rotations.
*7. Use an Encoder cable length of 10 m max. When using a cable of 10 m or less, read the code 10 μs or more
after the LSB (2º)of the code changes.
*8. The device coupled to the Encoder shaft must also satisfy the ambient temperature condition.
Multi-turn absolute value code
| Multi-turn absolute value | Code |
| 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 | 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 1 1 1 1 1 0 1 1 1 1 1 1 1 0 1 0 1 1 1 1 1 0 0 1 1 1 1 1 1 0 0 0 1 1 1 1 0 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 0 1 0 1 |
The expressions for negative values given above can be achieved by reversing 1's and 0's and then adding 1.
Caution: In the interenst of product improvement, specifications are subject to change without notice.