RMB28 RLS, RMB28 Datasheet - Page 6

• Manufacturer Part Number: RMB28
• Description: Angular Magnetic Encoder Module
• Manufacturer: RLS

Data sheet
RMB28D01_04
RMB28SC – Absolute binary synchro-serial (SSI), RS422A, 5 V
Alternative for optical encoders
* Worst case within operational parameters including magnet position and temperature.
Connections
RMB28SC - 256 positions per revolution
6
Power supply
Power consumption
SSI output code
Data outputs
Data inputs
Operating temperature
Maximum speed
256
320, 400, 500, 512
800, 1,000, 1,024
1,600, 2,000, 2,048
4,096
8,192
Resolution options
(positions per rev)
speed (rpm)
Maximum
60,000
30,000
20,000
10,000
5,000
2,500
V
13 mA for 8 bit resolution
35 mA for all other resolutions
Natural binary
Serial data (RS422A)
Clock (RS422A)
-40 °C to +125 °C
60,000 rpm
dd
= 5 V ± 5%
Clock-
Clock
Data-
GND
Data
V
dd
Accuracy*
±0.7°
±0.5°
±0.5°
±0.5°
±0.5°
±0.7
Hysteresis
0.45°
0.18°
0.18°
0.18°
0.18°
0.18°
Timing diagram
Clock
Data
Position increases for clockwise rotation of magnet.
Recommended signal termination
For data output lines only
RMB28SC - all other resolutions
Clock ≤ 900 kHz
Clock ≤ 4 MHz
Encoder
Clock-
GND
Clock
Data-
Data
V
dd
Cable Z
16 μs ≤ t
12.5 μs ≤ t
0
= 120R
m
≤ 22 μs
m
≤ 20 μs for all other resolutions
Customer electronics
10 nF
120R
for 8 bit resolution