I. Overview of the MR50L long-stroke absolute magnetic scale:
The maximum range of the MR50L long-stroke absolute magnetic scale can reach 16.384 meters, and the range range that can be selected is wider. The absolute magnetic scale is a high-precision sensor used for linear or rotational position measurement. Its core working components are divided into two main parts. The "magnetic scale" has magnetic scales evenly recorded on the scale. The "reading head" is equipped with a magnetic sensitive element inside. When moving above the ruler, the absolute position information of the magnetic signal can be read. There is no need to go back to zero to find a reference point like an incremental ruler. Even if the power is cut off midway, the position information will not be lost. The position will still be accurate after repowering.
II. Features and applications of MR50L long-stroke absolute magnetic scale:
Strong anti-interference, insensitive to industrial environments such as oil, dust, vibration, etc., high reliability; No need to return to zero, saving time and preventing production problems caused by unexpected power outages; Simple maintenance, usually no need for batteries to maintain memory, and solid structure. It is widely used in situations that require high reliability and absolute position memory, such as CNC machine tools, precision measurement equipment, automated production lines, medical equipment, robots, etc.
Long-range absolute magnetic scale:
1. Dual-channel absolute magnetic scale encoder,
2. Periodic encoding length 16384mm,
3. Speed up to 5m/s,
4. Support SSI, BISS-C, RS485 (MODBUS-RTU).
III.Technical Parameters
Resolution | 0.1μm |
Magnetic pole width | 2+2mm |
Measuring range | 0-16.3m（Optional） |
Repeatability | <2µm |
Supply Voltage | DC5V |
Current consumption | 155mA(Max) |
Magnetic stripe precision | ±20um |
Location Data Interface | RS485“Modbus-RTU”;SSI;BISS-C (optional） |
Parameter Configuration Interface | RS485 |
IP grade | IP67 |
SSIClock frequency input | ≤750KHz(Depends on the cable length） |
Maximum Speed | 5m/s |
Seismic Resistance | 300m/s2 |
Cable length | Default 2 meters (maximum 10 meters) |
Default 2 meters (maximum 10 meters) | 0.4（mm）±0.1mm |
IV.Wiring Definition:
Output signal | Red | Black | Blue | White | Yellow | Green | Shielded Wire |
RS485 | 5VDC | 0V | A | B | NC | NC | Earthing |
SSI | 5VDC | 0V | D+ | D- | C+ | C- | Earthing |
BISS | 5VDC | 0V | MA+ | MA- | SLO+ | SLO- | Earthing |
SSI Timing requirements
SSI Technical Requirements
Frequency | Bit | Code | Resolution | Remarks |
100khz- 1Mhz | 25 bit | Gray code | 1um | Factory default |
100khz- 1Mhz | 32 bit | Optional | 0.1um | Configurable |
SSI Temporal parameters
Parameter | Symbol | Minimum | Typical value | Maximum |
Clock frequency | tcl | 10us | 5us | 1us |
Clock frequency | tcl | 100Khz | 200Khz | 1Mhz |
Pause time | tp | 64us | 128us |
SSI Data Format
25 Bit
Bit | b24-b0 |
Length | 25bits |
Data | Location Unit 1um |
Code | Gray code |
32 bit
Bit | b31-b1 | B0 |
Length | 31bits | 1bit |
Data | Location unit 0.1um | Error position |
Code | Grade code |
BISS-C Timing requirements
BISS-C Technical Requirements
Frequency | Data bits | Code | Resolution | Remarks |
100khz- 1Mhz | 30 bit | Binary | 0.1um | Factory default |
BISS-C Temporal parameters
Parameter | Symbol | Minimum | Typical value | Maximum |
Clock frequency | tMA | 1us | 10us | |
Clock frequency | f | 100Khz | 1Mhz | |
ACK Length | tACK | 1bits | ||
Transmission timeout | tM | 10us | ||
Pause time | tP | 64us |
BISS-C Data Format
Bit | b38-b8 | b7 | b6 | b5:b0 |
Length | 30bits | 1bit | 1bit | 6bits |
