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RM44 rotary encoder with external zeroing

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RM44 rotary encoder with external zeroing

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The RM44 encoder-sensor base unit is designed for integration onto electric motors or other devices for shaft position and velocity measurement.

 

The RM44 with external zeroing is designed for setting the encoder zero position by using zero pen. It is designed for power supply voltage of 5 V only.

 

For electrical characteristics and dimensional drawings please refer to RM44 data sheet (RM44D01 see downloads).

 

Setting the zero position


1. Install the magnetic actuator and RM44 encoder.
Please refer to RM44 data sheet (RM44D01) for more information.
2. Set the mechanical zero position.
3. Use the zero pen to set the encoder zero position (see image): 
   3.1 Touch the Zero mark with the apex of the Zero pen - the status LED goes off.
   3.2 Hold the Zero pen for 3 seconds.
   3.3 The new Zero position is set when status LED goes RED.

RM44IC - Incremental, RS422, 5 V
Output signals A, B, Z, A-, B-, Z- (RS422)
Max. cable length 50 m
Edge separation 1 μs minimum
Resolution options
(counts per
revolution)		 Maximum
speed (rpm)		 Accuracy Hysteresis
320, 400, 500, 512 30,000 ±0.7° 0.18°
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°
Connections
Pin Nr. Function Wire colour
1 Shield -
2 Z White
3 B Green
4 A Grey
5 Vdd Red
6 Z- Brown
7 B- Yellow
8 A- Pink
9 GND Blue

RM44SC - Absolute binary synchro-serial (SSI), RS422, 5 V
SSI output code Natural binary
Data outputs Serial data (RS422A)
Data inputs Clock (RS422A)
Repeatability ≤0.07°
Max. cable length 100 m (at 1 MHz)
Resolution options
(positions per rev)		 Maximum
speed (rpm)		 Accuracy Hysteresis
320, 400, 500, 512 30,000 ±0.7° 0.18°
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°
Connections
Pin Nr. Function Wire colour
1 Shield -
2 Clock White
3 Clock- Brown
4 NC -
5 Vdd Red
6 Data Green
7 Data- Yellow
8 NC -
9 GND Blue
RM44Vx - Linear voltage output, 5 V
Nonlinearity 1 %
Max. cable length 20 m
Maximum speed 30,000 rpm
Connections
Function Wire colour
Shield -
Vdd Red
GND Orange
VOUT Black
Output type and electrical variant
φFS 360° 180° 90° 45°
CW VA VB VC VD
CCW VE VF VG VH
 
RM44Ux – Commutation single ended + incremental with line driver
Maximum speed 30,000 rpm
Accuracy ±0.5°
Incremental outputs A+, B+, Z+, A–, B–, Z– (RS422)
Incremental resolution 32, 64, 128, 256, 512, 1,024, 12,048, 4,096  8,192 cpr
Commutation outputs U, V, W (±24 mA output drive)

Number of poles for commutation outputs

 2, 4, 6, 8, 10, 12, 14, 16

 

RM44IC - Incremental, RS422, 5 V
Power supply Vdd = 5 V ± 5 %
Current consumption 35 mA

RM44SC - Absolute binary synchro-serial (SSI), RS422, 5 V
Power supply Vdd = 5 V ± 5 %
Current consumption 35 mA

RM44Vx - Linear voltage output, 5 V
Power supply Vdd = 5 V ± 5 %
Current consumption 20 mA (not loaded)
Output voltage 0 V to Vdd
Output loading Max. 10 mA

RM44Ux – Commutation single ended + incremental with line driver
Power supply Vdd = 5 V ± 10 %
Current consumption 30 mA (not loaded)
All output types
Cable

Outside diameter 5 mm
Mass

Encoder unit 1 m cable (no connector) IP64 112 g, IP68 129 g. Magnetic actuator <2 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)
EMC compliance BS EN 61326
Environmental sealing IP64 (IP68 optional) BS EN 60529
RM44IC - Incremental, RS422, 5 V

Operating temperature

Extended operating 
temperature

-25 °C to +85 °C 

-40 °C to +125 °C (IP64)

RM44SC - Absolute binary synchro-serial (SSI), RS422, 5 V

Operating temperature

-40 °C to +125 °C (IP64)

-40 °C to +85 °C (IP68)

RM44Vx - Linear voltage output, 5 V

Operating temperature

-40 °C to +125 °C (IP64)

-40 °C to +85 °C (IP68)

RM44Ux – Commutation single ended + incremental with line driver

Operating temperature

–40 °C to +125 °C (IP64)
–40 °C to +85 °C (IP68)

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Zeroing pen ZEROPEN00
Info

Zeroing pen ZEROPEN00

Features

  • With external zeroing
  • Easy to install - with self locating design
  • Low cost for OEM integration
  • Fully sealed to IP68
  • High reliability from proven non-contact sensing technology
  • Available with 5 V power supply
  • RoHS compliant (lead free)

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