rmb20 RLS, rmb20 Datasheet - Page 4

• Manufacturer Part Number: rmb20
• Description: Angular Magnetic Encoder Module
• Manufacturer: RLS

4
Data sheet
RMB20D01_08
RMB20IC – Incremental output
Square wave differential line driver to RS422A
RMB20IC - 9 bit resolution only
RMB20PC – Absolute binary parallel interface
Parallel absolute position measurement
* Worst case within operational parameters including magnet position and temperature.
Connections
Power supply
Power consumption
Output signals
Temperature
Output code
Power supply
Power consumption 20 mA without load
Output voltage
Resolution
Hysteresis
Accuracy
Repeatability
Data outputs
Data inputs
Temperature
Maximum speed
320, 400, 500
512
800, 1,000, 1,024
1,600, 2,000, 2,048
4,096
8,192
Resolution options
(counts per rev)
Maximum speed
Natural binary
V
V
V
9 bit (512 positions per revolution)
0.45°
±0.7°
≤ 0.07°
D0 (LSB) - D8 (MSB)
LE - latch enable input signal, active high
Maximum sampling rate 500 kHz
Operating
Storage
30,000 rpm
V
23 mA for 9 bit resolution
35 mA for all other resolutions
A, B, Z, A-, B-, Z- (RS422A)
Operating
Storage
dd
H
L
dd
30,000
30,000
20,000
10,000
(rpm)
5,000
2,500
≤ 1 V at I
≥ 4 V at -I
= 5 V ± 5%
= 5 V ± 5%
GND
L
V
A-
Z-
B-
A
Z
B
-40 °C to +125 °C
-40 °C to +85 °C
-40 °C to +125 °C (option 1B)
H
≤ 3 mA
-25 °C to +85 °C
-40 °C to +125 °C
dd
≤ 3 mA
Accuracy*
±0.7°
±0.7°
±0.5°
±0.5°
±0.5°
±0.5°
Hysteresis
0.18°
0.45°
0.18°
0.18°
0.18°
0.18°
RMB20IC - all other resolutions
RMB20PC
Recommended signal termination
Position increases for clockwise rotation of magnet.
Timing diagram
Complementary signals not shown
A
B
Z
B leads A for clockwise rotation of magnet.
Timing diagram
Connections
Encoder
reference impulse
Cable Z
counts per rev
360° x 4
t
r
(reaction time) ≤ 1 µs
0
= 120R
= 1 cycle
GND
GND
V
D8
D7
D6
D5
D4
D3
D2
D1
V
D0
LE
Z-
A-
B-
A
Z
B
dd
dd
120R
10 nF
Customer electronics
edge separation