RMB28 / RMF44 angular magnetic encoder modules

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1 RM28D01_12 Issue 12, 27 th July 2018 RM28 / RMF44 angular magnetic encoder modules The images do not represent all variants. The RM28 encoder module is designed for direct integration to high volume OEM applications. The low cost 28 mm square PC can also be provided with a connector or as RMF44 on a 44 mm diameter metal flange for easy installation. The encoder module consists of a magnetic actuator and a separate sensor board. Rotation of the magnetic actuator is sensed by a custom encoder chip mounted on the sensor board, and processed to give the required output format. Output signals are provided in industry standard absolute, incremental, analogue or linear voltage output formats. The RM28 and RMF44 encoder modules can be used in a wide range of OEM applications including motor control and industrial automation. Product range RM28C / RMF44C nalogue sinusoidal output with a single sine/cosine period per revolution. RM28I / RMF44I Incremental with 80 to 2,048 pulses per revolution (320 to 8,192 counts per revolution with x4 evaluation). RM28MD / RMF44MD Sine/Cosine + bsolute binary synchro-serial + Incremental, 5V. RM28SC / RMF44SC Synchro serial interface (SSI) with 320 to 8,192 positions per revolution. RM28SI / RMF44SI Synchro serial interface (SSI) and incremental outputs. RM28Vx / RMF44Vx Linear voltage output in a range of variants. 28 mm square module with the option of 44 mm diameter metal flange Low cost for OEM integration 24 V and 5 V power supply versions High speed operation to 60,000 rpm bsolute - to 13 bit resolution (8,192 counts per revolution) Industry standard absolute, incremental, analogue, commutation and linear voltage output formats ccuracy to ±0.5 RoHS compliant (lead free) - see Declaration of conformity

RM28D01_12 RM28 installation drawing Magnetic actuator Magnet Ø 4 4 0.2 3 ±0.2 0.2 PC RM28 Component area Max. 2.5 D Ø 31 ±0.1 Component area 28 ±0.2 28 ±0.

2 RM28D01_12 RM28 installation drawing Magnetic actuator Magnet Ø ± PC RM28 Component area Max. 2.5 D Ø 31 ±0.1 Component area 28 ± ±0.2 Output type Hole diameter (D) RM28C 2.5 ±0.1 RM28IC 2.5 ±0.1 RM28I 3.5 ±0.1 RM28IE 3.5 ±0.1 RM28MD 3.5 ±0.1 RM28SC 2.5 ±0.1 RM28SI 2.5 ±0.1 RM28Vx 3.5 ±0.1 wise (CW) rotation of magnet 2

RMF44 installation drawing Ø12 ±0.5 Magnet Ø4 4 Distance 0±0.1 Metal flange 3.1 ±0.05 0.5 ±0.05 Magnetic actuator 0.1 0.1 1.

3 RMF44 installation drawing Ø12 ±0.5 Magnet Ø4 4 Distance 0±0.1 Metal flange 3.1 ± ±0.05 Magnetic actuator ± ±0.2 PC RM28 Component area Component area Ø44h8 Ø4.5 ± ± ± ±0.05 wise (CW) rotation of magnet 3

RM28D01_12 RM28C / RMF44C nalogue sinusoidal 2 channels V V sinusoids (90 phase shifted, single ended) Power supply = 5 V ±5 % Timing diagram One sine/cosine wave per revolution 360 13 m Sin/Cos

2 V pp 60,000 rpm Operating temperature 90 V 3 5 Cos Sin RM28IE / RMF44IE Incremental, Open Collector, NPN Low cost alternative for ball bearing encoders Power supply = 5 V ±5 % Timing diagram Output

4 RM28D01_12 RM28C / RMF44C nalogue sinusoidal 2 channels V V sinusoids (90 phase shifted, single ended) Power supply = 5 V ±5 % Timing diagram One sine/cosine wave per revolution m Sin/Cos outputs Signal amplitude: 1.1 V ±0.2 V Signal offset /2 ±5 mv 3 5 V 2.2 V pp 60,000 rpm Operating temperature 90 V 3 5 Cos Sin RM28IE / RMF44IE Incremental, Open Collector, NPN Low cost alternative for ball bearing encoders Power supply = 5 V ±5 % Timing diagram Output signals 35 m (not loaded),, 360 x 4 counts per rev = 1 cycle Maximum output load 20 m edge separation ccuracy Typ. ±0.5 Hysteresis to 2,048 pulses per revolution (320, 400, 500, 512, 800, 1,000, 1,024, 1,600, 2,000, 2,048, 4,096, 8,192 counts per revolution) 30,000 rpm reference impulse leads for clockwise rotation of magnet. +5 V Recommended signal termination PC R = Minimum value,,,, 4

RM28IC / RMF44IC Incremental, RS422 Square wave differential line driver to RS422 Power supply = 5 V ±5 % Output signals Max. 35 m ccuracy Typ. ±0.5 Hysteresis 0.

(with connector) Timing diagram Complementary signals not shown reference impulse 360 x 4 counts per rev = 1 cycle edge separation leads for clockwise rotation of magnet.

5 RM28IC / RMF44IC Incremental, RS422 Square wave differential line driver to RS422 Power supply = 5 V ±5 % Output signals Max. 35 m ccuracy Typ. ±0.5 Hysteresis 0.18,,,,, (RS422) 80 to 2,048 pulses per revolution (320, 400, 500, 512, 800, 1,000, 1,024, 1,600, 2,000, 2,048, 4,096, 8,192 counts per revolution) 30,000 rpm 40 C to +105 C (with connector) Timing diagram Complementary signals not shown reference impulse 360 x 4 counts per rev = 1 cycle edge separation leads for clockwise rotation of magnet. Recommended signal termination Encoder Cable 0 = 120R Customer electronics 120R 10 nf Connector type Molex Mating connector (Not provided) Molex (crimp terminal xxxx) 5

RM28D01_12 RM28SC / RMF44SC bsolute binary synchro-serial (SSI), RS422 Serial encoded absolute position measurement Output code Natural binary Power supply = 5 V ±5 % Data output Data input Max.

6 RM28D01_12 RM28SC / RMF44SC bsolute binary synchro-serial (SSI), RS422 Serial encoded absolute position measurement Output code Natural binary Power supply = 5 V ±5 % Data output Data input Max. 35 m Serial data (RS422) (RS422) ccuracy Typ. ±0.5 Hysteresis , 400, 500, 512, 800, 1,000, 1,024, 1,600, 2,000, 2,048, 4,096, 8,192 counts per revolution 30,000 rpm 40 C to +105 C (with connector) Timing diagram Data 4 MHz 12.5 μs t m 20 μs Position increases for clockwise rotation of magnet. Recommended signal termination For data output lines only Encoder Customer electronics Cable 0 = 120R 120R 10 nf Data Data Connector type Molex Mating connector (Not provided) Molex (crimp terminal xxxx) 6

RM28SI / RMF44SI bsolute binary synchro-serial (SSI) + Incremental, RS422 Complex feedback device for absolute position at start up as well as during operation + incremental outputs.

35 m,,,,, (RS422) Serial data (RS422) (RS422) ccuracy Typ. ±0.5 Hysteresis 0.

7 RM28SI / RMF44SI bsolute binary synchro-serial (SSI) + Incremental, RS422 Complex feedback device for absolute position at start up as well as during operation + incremental outputs. oth the incremental and the SSI output always have the same fixed resolution. Output code Natural binary Power supply = 5 V ±5 % Incremental outputs Data output Data input Max. 35 m,,,,, (RS422) Serial data (RS422) (RS422) ccuracy Typ. ±0.5 Hysteresis to 2,048 pulses per revolution (320, 400, 500, 512, 800, 1,000, 1,024, 1,600, 2,000, 2,048, 4,096, 8,192 counts per revolution) 30,000 rpm 40 C to +105 C (with connector) Timing diagram - SSI Data 4 MHz 12.5 μs t m 20.5 μs Position increases for clockwise rotation of magnetic actuator. Timing diagram - Incremental Complementary signals not shown 360 x 4 counts per rev = 1 cycle edge separation Data Data reference impulse leads for clockwise rotation of magnetic actuator. Connector type Molex Mating connector (Not provided) Molex (crimp terminal xxxx) Recommended signal termination For incremental signals + SSI data output lines only Encoder Customer electronics Cable 0 = 120R 120R 10 nf 7

RM28D01_12 RM28MD / RMF44MD Sine/Cosine + bsolute binary synchro-serial (SSI) + Incremental Complex feedback device for absolute position at start-up as well as during operation + incremental outputs

8 RM28D01_12 RM28MD / RMF44MD Sine/Cosine + bsolute binary synchro-serial (SSI) + Incremental Complex feedback device for absolute position at start-up as well as during operation + incremental outputs Output code Natural binary Power supply = 5 V ±5 % Incremental outputs 13 m incremental and SSI (not loaded),, Sin/Cos outputs Signal amplitude: 1.1 V ±0.2 V Data output Data input Signal offset Serial data ccuracy ±0.7 Hysteresis 0.45 /2 ±5 mv 8 bit + 64 ppr (256 cpr) + one sine/ cosine period per revolution 60,000 rpm Timing diagram - SSI Data 900 khz 16 μs t m 22 μs Position increases for clockwise rotation of magnet. Timing diagram - Incremental 360 x 4 counts per rev = 1 cycle edge separation Data reference impulse leads for clockwise rotation of magnet. Timing diagram - Sine/Cosine V V V 2.2 V pp V 8

RM28Vx / RMF44Vx Linear voltage output lternative for potentiometers Power supply = 5 V ±5 % Output voltage Output loading Nonlinearity 1 % of DC Typ. 26 m 0 V to Max.

9 RM28Vx / RMF44Vx Linear voltage output lternative for potentiometers Power supply = 5 V ±5 % Output voltage Output loading Nonlinearity 1 % of DC Typ. 26 m 0 V to Max. 2 m 10 bit 30,000 rpm ero V out The digital relative angular position information is converted into linear voltage with a built-in 10 bit D/ converter. The linear output voltage swing ranges from 0 V and (5 V). The number of periods within one revolution (N period ) can be 1, 2, 4 or 8, representing one full swing over an angle (φ period ) of 360, 180, 90 or 45 respectively. The signal is made up of steps which represent the angular movement needed to register a change in the position (φ step ) and the resulting change in the output voltage (V step ). The number of steps in one period (N step ) is given in the table below. For clockwise rotation of the magnetic actuator, the output voltage increases. For counterclockwise rotation, the output voltage decreases. V Detail V step 0 period Timing diagram for linear voltage output step = period V = step step N step N step φ period = ngle covered in one period (one sawtooth) V period = Output voltage range for one period φ step = Step angle (angular movement needed to register a change in the position) V step = Output voltage range for one step N period = Number of periods in one revolution N step = Number of steps in one period φ period N period N step φ step Output type and electrical variant φ period Rotation wise V V VC VD Counterclockwise VE VF VG VH 9

10 RM28D01_12 RM28I / RMF44I Incremental, Open Collector, NPN Square wave output Power supply Output signals Maximum output load = 8 V to 26 V 50 m,, 20 m ccuracy Typ. ±0.5 Hysteresis to 2,048 pulses per revolution (320, 400, 500, 512, 800, 1,000, 1,024, 1,600, 2,000, 2,048, 4,096, 8,192 counts per revolution) 30,000 rpm Timing diagram reference impulse 360 x 4 counts per rev = 1 cycle edge separation leads for clockwise rotation of magnet. Recommended signal termination PC R = Minimum value +24 V,,,, +5 V NOTE: RM28I / RMF44I boards need 2 power supplies; pad needs 24 V and pad +5 V needs 5 V. Pads V in, and +5 V have been provided to allow easy connection to a 3 terminal voltage regulator to generate 5 V from 24 V. 10

Part numbering RMF44 IC 08 10 Series RM28 RMF44 - RM28 encoder module on 44 mm diameter metal flange Special requirements 10 - No special requirements (standard) 11 - With Molex connector (for IC, SC

11 Part numbering RMF44 IC Series RM28 RMF44 - RM28 encoder module on 44 mm diameter metal flange Special requirements 10 - No special requirements (standard) 11 - With Molex connector (for IC, SC and SI) Output type C - Sine/Cosine output I - Incremental, open collector, NPN, 24 V IC - Incremental, RS422, 5 V IE - Incremental, open collector, NPN, 5 V MD - SSI + Incremental + nalogue sinusoidal, 5 V SC - bsolute binary synchro-serial (SSI), RS422, 5 V SI - SSI + Incremental, RS422, 5 V Vx - Linear voltage Linear voltage output 0-5 V, supply 5 V DC CW V V VC VD CCW VE VF VG VH NOTE: Not all combinations are valid. Shape S - Square (for RM28) - Standard 44 mm diameter aluminium flange (for RMF44) For C: 01S - One sine/cosine wave per revolution For MD: counts or positions per revolution For I, IC, IE, SC and SI (counts/positions per revolution): Decimal D D D D D D D For Vx: 10-1,024 steps per revolution inary * For sample quantities of RM28 supplied with a magnet please add KIT to the end of the required RM28 part number, eg. RM28IC09S10KIT. Series Output type Shape Special requirements C 01S MD 08 Vx RM28 / RMF44 I IE IC SC 2D0 / 1D6 / 1D0 / D80 / D50 / D40 / D32 / 13 / 12 / 11 / 10 / 09 / 08 / 07 S / 10 / 11 SI 11

RM28D01_12 Magnetic actuator and magnet ordering information ctuator for integration onto shaft Shaft = Ø*h7 Fixing: Grub screw provided magnet 6 Ø10 Ø*H8 Ø15-0.

RM08200 Ø8 mm shaft RM37200 Ø3/8 shaft For resolutions from 10 bit absolute (800 cpr incremental) and above RM04300 Ø4 mm shaft RM10300 Ø10 mm shaft RM05300 Ø5 mm shaft RM19300 Ø3/16 shaft RM06300 Ø6

resolutions from 10 bit absolute (800 cpr incremental) and above RMH06300 ±0.

12 RM28D01_12 Magnetic actuator and magnet ordering information ctuator for integration onto shaft Shaft = Ø*h7 Fixing: Grub screw provided magnet 6 Ø10 Ø*H8 Ø Part numbers: For resolutions up to 9 bit absolute (512 cpr incremental) RM04200 Ø4 mm shaft RM10200 Ø10 mm shaft RM05200 Ø5 mm shaft RM19200 Ø3/16 shaft RM06200 Ø6 mm shaft RM25200 Ø1/4 shaft RM08200 Ø8 mm shaft RM37200 Ø3/8 shaft For resolutions from 10 bit absolute (800 cpr incremental) and above RM04300 Ø4 mm shaft RM10300 Ø10 mm shaft RM05300 Ø5 mm shaft RM19300 Ø3/16 shaft RM06300 Ø6 mm shaft RM25300 Ø1/4 shaft RM08300 Ø8 mm shaft RM37300 Ø3/8 shaft ctuator for integration into shaft magnet Ø8 Part numbers: For resolutions up to 9 bit absolute (512 cpr incremental) RMH06200 For resolutions from 10 bit absolute (800 cpr incremental) and above RMH06300 ± With N-pole marker scribed to a ± 5 accuracy: with N-pole marker Ø6h8 For resolutions up to 9 bit absolute (512 cpr incremental) RMH06202 For resolutions from 10 bit absolute (800 cpr incremental) and above RMH06302 Hole = Ø6G7 Fixing: Glue (recommended LOCTITE 648 or LOCTITE 2701) Magnet for direct recessing in non-ferrous shafts Ø4 ±0.1 4 ±0.1 Part numbers: For resolutions up to 9 bit absolute (512 cpr incremental) RMM44200 (individually packed) for sample quantities only RMM442C00 (packed in tubes) For resolutions from 10 bit absolute (800 cpr incremental) and above RMM44300 (individually packed) for sample quantities only RMM443C00 (packed in tubes) Fixing: Glue (recommended LOCTITE 648 or LOCTITE 2701) 12

13 Head office RLS merilna tehnika d.o.o. Poslovna cona Žeje pri Komendi Pod vrbami 2 SI-1218 Komenda Slovenia T F E mail@rls.si Document issues Issue Date Page mendments done , 2, 3, 10 C output added 3 IC output description and connections amended 4 I output description and connections amended 5 IE output connections amended 6 and timing diagram Sine/Cosine amended 7 I output description and connections amended 9 Vx output description and connections amended 10 Ordering code amended General RMF44 added RMF44 installation drawing amended RMF44 installation drawing amended 4-6, 8, 9 s amended General amended This product is not designed or intended for use outside the environmental limitations and operating parameters expressly stated on the product s datasheet. Products are not designed or intended for use in medical, military, aerospace, automotive or oil & gas applications or any safety-critical applications where a failure of the product could cause severe environmental or property damage, personal injury or death. ny use in such applications must be specifically agreed to by seller in writing, and is subject to such additional terms as the seller may impose in its sole discretion. Use of products in such applications is at buyer s own risk, and buyer will indemnify and hold harmless seller and its affiliates against any liability, loss, damage or expense arising from such use. Information contained in this datasheet was derived from product testing under controlled laboratory conditions and data reported thereon is subject to the stated tolerances and variations, or if none are stated, then to tolerances and variations consistent with usual trade practices and testing methods. The product s performance outside of laboratory conditions, including when one or more operating parameters is at its maximum range, may not conform to the product s datasheet. Further, information in the product s datasheet does not reflect the performance of the product in any application, end-use or operating environment buyer or its customer may put the product to. Seller and its affiliates make no recommendation, warranty or representation as to the suitability of the product for buyer s application, use, end-product, process or combination with any other product or as to any results buyer or its customer might obtain in their use of the product. uyer should use its own knowledge, judgment, expertise and testing in selecting the product for buyer s application, end-use and/or operating environment, and should not rely on any oral or written statement, representation, or samples made by seller or its affiliates for any purpose. EXCEPT FOR THE WRRNTIES EXPRESSLY SET FORTH IN THE SELLER S TERMS ND CONDITIONS OF SLE, SELLER MKES NO WRRNTY EXPRESS OR IMPLIED WITH RESPECT TO THE PRODUCT, INCLUDING NY WRRNTY OF MERCHNTILITY OR FITNESS FOR NY PRTICULR PURPOSE, WHICH RE DISCLIMED ND EXCLUDED. ll sales are subject to seller s exclusive terms and conditions of sale which, where the seller is (a) RLS merilna tehnika d.o.o., are available at (b) Renishaw, Inc., are available at or (c) another person, are available on request, and in each case, are incorporated herein by reference, and are the exclusive terms of sale. No other terms and conditions apply. uyer is not authorized to make any statements or representations that expand upon or extend the environmental limitations and operating parameters of the products, or which imply permitted usage outside of that expressly stated on the datasheet or agreed to in writing by seller. RLS merilna tehnika d.o.o. has made considerable effort to ensure the content of this document is correct at the date of publication but makes no warranties or representations regarding the content. RLS merilna tehnika d.o.o. excludes liability, howsoever arising, for any inaccuracies in this document RLS d.o.o.

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