Magnetic sensor MSAC501
Absolute, high-resolution position acquisition for rotative applications
![](/fileadmin/_processed_/6/3/csm_34892_SSI_LOGO_a4af671906.jpg)
The MSAC501 magnetic sensor serves truly absolute roto measurement, e.g., on large 3-phase current or torque motors.The sensor has the standardized SSI or 485 interfaces. Optionally, an LD output can be selected for incremental signal output.Circumferentialspeeds of 25 m/sec (incremental) or 5 m/sec (absolute) can be attained.
- Max. resolution 0.0014° (MRAC501) or 4.88 µm
- Repeat accuracy of 0.0014° (MRAC501) or 4.88 µm
- System accuracy ±0.06° (MRAC501) or ±0.03 mm
- SSI output circuit, RS485 (absolute), optional LD (incremental)
- Signal period 5 mm
- Status LEDs for diagnosis
Technical drawing
Technical Specifications
Mechanical data
Electrical data
System data
Ambient conditions
Feature
Technical Specifications
Enhancement
Housing
 zinc die-cast
Sensor/ring reading distance
≤0.2
 mm
Feature
Technical Specifications
Enhancement
Operating voltage
4.5 … 30 V DC
Power input
<1.5
 W
SSI clock speed input
≤750
 kHz
depending on cable length
Output circuit
 without, LD (RS422)
Interface
 SSI, RS485
Cycle time
≤30
 µs
Type of connection
 M12 plug connector (A-coded)
12-pole, 1x pin
Feature
Technical Specifications
Enhancement
Pole length
5
 mm
Resolution
4.88
 µm
0.0014
 °
at MRAC501-256 pole
Scaling factor
7
 bit
,
8
,
9
,
10
absolute
7
,
8
,
9
,
10
 bit
incremental
System accuracy
±0.06
 °
 at TU = 20° C
±0.03
 mm
 at TU = 20° C
Repeat accuracy
±0.0014
 °
 at TU = 20° C
±0.005
 mm
 at TU = 20° C
Measuring range
360
 °
singelturn
Circumferential speed
≤5
 m/s
absolute
Incremental peripheral speed
Circumferential speed [m/s] |
||||||||||
Incremental scaling |
7 bit |
25.00 |
15.63 |
7.81 |
3.13 |
1.95 |
0.98 |
0.49 |
0.24 |
0.12 |
8 bit |
19.53 |
7.81 |
3.91 |
1.56 |
0.98 |
0.49 |
0.24 |
0.12 |
0.06 |
|
9 bit |
9.77 |
3.91 |
1.95 |
0.78 |
0.49 |
0.24 |
0.12 |
0.06 |
0.03 |
|
10 bit |
4.88 |
1.95 |
0.98 |
0.39 |
0.24 |
0.12 |
0.06 |
0.03 |
0.01 |
|
Pulse interval [μs] |
0.2 |
0.5 |
1 |
2.5 |
4 |
8 |
16 |
32 |
66 |
|
Counting frequency [kHz] |
1250 |
500 |
250 |
100 |
62.5 |
31.25 |
15.63 |
7.81 |
3.79 |
|
3 |
1 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
Feature
Technical Specifications
Enhancement
Ambient temperature
-30 … 85 °C
Storage temperature
-40 … 85 °C
Relative humidity
100
 %
condensation admissible
EMC
 EN 61000-6-2
interference resistance / immission
 EN 61000-6-4
emitted interference / emission
Protection category
 IP67
EN 60529, with mating connector fitted
Shock resistance
500 m/s2, 11 ms
EN 60068-2-27
Vibration resistance
<100 m/s2, 5 … 150 Hz
EN 60068-2-6
More information
pin assignment
without LD
SSI |
RS485 |
PIN |
nc |
nc |
1 |
D+ |
DÜA |
2 |
D- |
DÜB |
3 |
T- |
nc |
4 |
+UB |
+UB |
5 |
nc |
nc |
6 |
nc |
nc |
7 |
nc |
nc |
8 |
nc |
nc |
9 |
config |
config |
10 |
T+ |
nc |
11 |
GND |
GND |
12 |
With LD
SSI |
RS485 |
PIN |
nc |
nc |
1 |
D+ |
DÜA |
2 |
D- |
DÜB |
3 |
T- |
nc |
4 |
+UB |
+UB |
5 |
/A |
/A |
6 |
A |
A |
7 |
/B |
/B |
8 |
B |
B |
9 |
config |
config |
10 |
T+ |
nc |
11 |
GND |
GND |
12 |
Hint for mounting
Please ensure that both system components are correctly aligned with each other when mounting the sensor and magnetic ring.
A, Sensor/ring reading distance |
≤0.2 mm |
B, Lateral offset |
±1.5 mm |
C, Alignment error |
<±0.5° |
Further assembly instructions for the MSAC501 magnetic sensor can be found in the MBAC501 magnetic band data sheet
(Sensor representation symbolic)
System components
Purchase order
When ordering the system components please take care that the same code size is used
Product configuration
Feature
Select specifications
Enhancement
Select your specifications:
code size
7
absolute scaling
7
Interface
RS485
Output circuit
O
incremental scaling
7
only with LD
only with LD
only with LD
only with LD
Pulse interval
0.2
in µs
only with LD
Scope of delivery
- MSAC501
- Installation Instructions
- Distance gage