RM22 rotary magnetic modular encoder

RM22 rotary magnetic modular encoder

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The RM22 is a compact, high-speed rotary magnetic encoder designed for use in harsh environments. The non-contact two part design removes the need for seals or bearings ensuring long-term reliability and simple installation.


The encoder comprises a magnetic actuator and a separate encoder body. Rotation of the magnetic actuator is sensed by a custom encoder chip within the body, and processed to give the required output format.


The encoder chip processes the signals received to provide resolutions to 13 bit (8192 positions per revolution) with operational speeds to 30,000 rpm. Output signals are provided in industry standard absolute, incremental or analogue formats.


The compact encoder body is just 22 mm in diameter and provides dirt immunity to IP68. The RM22 can be used in a wide range of applications including marine, medical, print, converting, industrial automation, metal working, motor control and instrumentation.

RM22I – Incremental outputs
Output signals A, B, Z, A-, B-, Z- (RS422A)
Max. cable length 50 m
Connector options 9 pin ‘D’ type plug (standard)
Flying lead
Edge separation Min. 1 μs

Resolution options

(counts per rev)

Maximum speed

(rpm)

Accuracy*

Hysteresis

320, 400, 500

30,000

±0.7°

0.18°

512

30,000

±0.7°

0.45°

800, 1,000, 1,024

20,000

±0.5°

0.18°

1,600, 2,000, 2,048

10,000

±0.5°

0.18°

4,096

5,000

±0.5°

0.18°

8,192

2,500

±0.5°

0.18°

RM22S – Absolute binary synchro-serial interface (SSI)
Output code Natural binary
Repeatability ≤ 0.07°
Data outputs Serial data (RS422A)
Data inputs Clock (RS422A)
Max. cable length 100 m (at 1 MHz)
Connector options 9 pin ‘D’ type plug (standard)
Flying lead

Resolution options

(positions per rev)

Maximum speed

(rpm)

Accuracy*

Hysteresis

320, 400, 500

30,000

±0.7°

0.18°

512

30,000

±0.7°

0.45°

800, 1,000, 1,024

20,000

±0.5°

0.18°

1,600, 2,000, 2,048

10,000

±0.5°

0.18°

4,096

5,000

±0.5°

0.18°

8,192

2,500

±0.5°

0.18°

RM22A – Analogue sinusoidal outputs 
Connector options

9 pin ‘D’ type plug (standard)

Flying lead

Maximum speed 30,000 rpm
Max. cable length 3 m
Internal serial impedance 720 Ω
RM22B – Analogue complementary sinusoidal outputs
Connector options

9 pin ‘D’ type plug (standard)

Flying lead

Maximum speed 30,000 rpm
Max. cable length 20 m
Internal serial impedance 100 Ω
RM22P – Absolute binary parallel interface
Output code Natural binary
Resolution 9 bit (512 positions per revolution)
Hysteresis 0.45°
Accuracy ±0.7°
Repeatability ≤ 0.07°
Data outputs D0 (LSB) - D8 (MSB)
Data inputs LE - latch enable input signal, active high
Maximum sampling rate 500 kHz
Max. cable length 30 m
Connector options

15 pin ‘D’ type plug (standard)

Flying lead

Maximum speed 30,000 rpm
RM22V – Linear voltage output
Nonlinearity 1% 
Max. cable length 20 m
Connector options

9 pin ‘D’ type plug (standard)

Flying lead

Maximum speed 30,000 rpm
Output type and electrical variant

φFS

360°

180°

90°

45°

CW

VA

VB

VC

VD

CCW

VE

VF

VG

VH

RM22I – Incremental outputs
Power supply Vdd = 5 V ± 5%
Power consumption 23 mA for 9 bit resolution
35 mA for all other resolutions
RM22S – Absolute binary synchro-serial interface (SSI)
Power supply Vdd = 5 V ± 5%
Power consumption 23 mA for 9 bit resolution
35 mA for all other resolutions
RM22A – Analogue sinusoidal outputs 
Power supply Vdd = 5 V ± 5%
Power consumption 20 mA
Outputs Signal amplitude 2 ± 0.2 Vpp
Signal offset Vdd / 2 ± 5 mV
Max. output frequency 500 Hz
RM22B – Analogue complementary sinusoidal outputs
Power supply Vdd = 5 V ± 5%
Power consumption 20 mA
Outputs Signal amplitude 2 ± 0.2 Vpp
Signal offset Vdd / 2 ± 5 mV
Max. output frequency 500 Hz
RM22P – Absolute binary parallel interface
Power supply Vdd = 5 V ± 5%
Power consumption 20 mA without load
Output voltage VH ≥ 4 V at -IH ≤ 3 mA
VL ≤ 1 V at IL ≤ 3 mA
RM22V – Linear voltage output
Power supply Vdd = 5 V ± 5%
Power consumption 20 mA typical
Output voltage 0 V to Vdd
Output loading Max. 10 mA
All Output types
Mass Encoder unit 1 m cable (no connector) 48 g. Magnetic actuator 12 g
All Output types
Humidity (for IP64 version) Storage     95% maximum relative humidity (non-condensing) (IEC 61010-1)
Operating  80% maximum relative humidity (non-condensing) (IEC 61010-1)
Acceleration Operating 500 m/s2      BS EN 60068-2-7:1993 (IEC 68-2-7:1983)
Shock (non-operating) 1000 m/s2, 6 ms, 1/2 sine    BS EN 60068-2-27:1993 (IEC 68-2-27:1987)
Vibration (operating) 100 m/s2 max at 55 to 2000 Hz    BS EN 60068-2-6:1996 (IEC 68-2-6:1995)
EMV compliance BS EN 61326
Environmental sealing IP64 (IP68 optional) BS EN 60529
RM22I – Incremental outputs
Temperature

Operating -25 °C to +85 °C (-40 °C to +125 °C option 08 - Only available with IP64 sealing)

Storage     -40 °C to +125 °C

RM22S – Absolute binary synchro-serial interface (SSI)
Temperature Operating   -40 °C to +125 °C (IP64)
                     -40 °C to +85 °C (IP68)
Storage       -40 °C to +85 °C
RM22A – Analogue sinusoidal outputs
Temperature Operating     -40 °C to +125 °C (IP64)
                       -40 °C to +85 °C (IP68)
Storage         -40 °C to +85 °C
RM22B – Analogue complementary sinusoidal outputs
Temperature Operating  -25 °C to +85 °C
Storage      -25 °C to +85 °C
RM22P – Absolute binary parallel interface
Temperature Operating     -40 °C to +125 °C (IP64)
                       -40 °C to +85 °C (IP68)
Storage         -40 °C to +85 °C
RM22V – Linear voltage output
Temperature Operating     -40 °C to +125 °C (IP64)
                       -40 °C to +85 °C (IP68)
Storage         -40 °C to +85 °C

Features

  • Excellent immunity to IP68
  • Non-contact, frictionless design
  • High speed operation to 30,000 rpm
  • Absolute - to 13 bit (8192 counts per revolution)
  • Industry standard absolute, incremental and analogue output formats
  • Compact - 22 mm diameter body
  • Accuracy to ±0.5°
  • Simple installation
  • Power supply 5 V
  • RoHS compliant (lead free)

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Delivery time up to: 10 days

Total price:

$13.67

Availability: In stock

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