Обзор
| Encoder type | Interface | Safety Integrated1) | Accuracy in angular seconds | Resolution | Degree of protection without/with
shaft input |
| Incremental encoders |
 | sin/cos 1 Vpp | Yes | ± 18 mech. × 3600/
PPR count z | 2500 S/R | IP67/IP64 |
| RS422 (TTL) | 2) | ± 18 mech. × 3600/
PPR count z | 5000 S/R | IP67/IP64 |
| HTL | 2) | ± 18 mech. × 3600/
PPR count z | 2500 S/R | IP67/IP64 |
| RS422 (TTL) double track | 2) | Track 1: ± 63
Track 2: ± 12 | Track 1: 1024 S/R
Track 2: 9000 S/R | IP67/IP64 |
| Absolute encoders |
 | DRIVE‑CLiQ | 2) | ± 36 | Single‑turn
22 bit Multi‑turn
34 bit
(22 bit single‑turn +
12 bit multi‑turn) | IP67/IP64 |
 | SSI | 2) | ± 79
(with 8192 steps) | Single‑turn
13 bit (8192 steps) Multi‑turn
25 bit
(8192 steps ×
4096 revolutions) | IP67/IP64 |
| EnDat | Yes | ± 60
(incremental track) | Single‑turn
13 bit (8192 steps) Multi‑turn
25 bit
(8192 steps ×
4096 revolutions) | IP67/IP64 |
 | PROFIBUS DP | 2) | ± 79
(with 8192 steps) | Single-turn
13 bit (8192 steps) Multi-turn
27 bit
(8192 steps ×
16384 revolutions) | IP67/IP64 |
 | PROFINET IO | 2) | ± 79
(with 8192 steps) | Single-turn
13 bit (8192 steps) Multi-turn
27 bit
(8192 steps ×
16384 revolutions) | IP67/IP64 |
S/R = signals/revolution
1) Built‑on rotary encoders can be used for Safety Integrated.
2) If you require information about the usability of built‑on rotary encoders for Safety Integrated, please contact your local Siemens office.
Absolute encoders, incremental encoders and mounting accessories
The built‑on optoelectronic rotary encoders sense distances, angles of rotation or speeds in machines. They can be used in conjunction with numerical control systems, programmable logic controllers, drives and position displays, e.g. for:
- SINUMERIK CNC controls
- SIMOTION Motion Control Systems
- SIMATIC programmable logic controllers
- SINAMICS drive systems
- SIMODRIVE drive systems
Область применения
A distinction is made between incremental and absolute measuring procedures:
- In the case of incremental encoders, the machine must travel to a reference point after each power‑off state, as the position is not usually stored in the controller, and movements of the machine while the power is off are not recorded.
- Absolute encoders, on the other hand, also record these movements while the power is off and return the actual position with power On. Travel to a reference point is not necessary.
