Netzer ds 58-specsheet

DS-58[20] Data Sheet , V 2.0c, MAR 2014

The DS-58[20] is a member of the DS series of Electric Encoders, based on Netzer Precision proprietary technology. These encoders off er many advantages, some unparalleled:

Low profi le (10 mm).

Hollow, fl oa ng sha .

No bearings or other contac ng elements.

High precision.

High tolerance to temperature, shock, moisture, EMI & RFI.

Insensi ve to magne c fi elds.

Very low weight.

The DS-58 is suited to demanding applica on such as: aerospace, medical, instrumenta on, automa on, etc.

DS-58[20] Absolute position, rotary Electric Encoder™

The holis c

structure

of the Electric Encoder™ provides generous moun ng tolerance, thus obvia ng the need for internal ball bearings.

The lack of bearings and components such as fl exible couplers, glass disc, light sources and detectors, along with very low power consump on makes the DS-58 encoder virtually failure free.

The internally shielded, DC operated Electric Encoder™ includes an electric fi eld generator, a fi eld receiver, a sinusoidal shaped dielectric rotor, and processing electronics.

The outputs signals of DS-58 Electric Encoder™ are analog Sine / Cosine represen ng the rota on angle, incremental or absolute posi on.

Performance

Electrical Cycles – Fine/Coarse channels 32 / 3Angular resolu on (using 12 bit A/D conversion) 18 bitsSta c error (with off set compensa on) < 15 mDeg (0.262mrad)Maximum opera onal speed 1,500 rpmMeasurement range Unlimited rota onOutput SSi absolute posi onBIT (build in tests , op onal) Included (SSi version)

Environment

EMC IEC 6100-6-2, IEC 6100-6-4Opera ng temperature range -40°C to +85°C Rela ve humidity <98 % - non condensing

Shock endurance IEC 60068-2-27 100 g for 11 ms

Vibra on endurance IEC 60068-2-6 20 g 10 – 2000 Hz

Protec on IP 40

Electrical

Supply voltage 5V ± 5% Interconnec on Ø 3 mm Shielded cable

Mechanical

Allowable moun ng eccentricity (opera onal) ±0.1 mmAllowable rotor axial mo on (opera onal) ±0.1 mmRotor iner a 800 gr · mm2

Total weight 36grOuter diameter / Inner diameter / Profi le 58 /20 /10 mmMaterial (stator, rotor) Ultem™ polymer Material moun ng clamps , M2 St.St.

ELECTROMATEToll Free Phone (877) SERVO98

Toll Free Fax (877) SERV099www.electromate.com

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Synchronous Serial Interface (SSi) allows for serial transmission of absolute posi on data from the Electric Encoder™ responding to controller clock pulses. The Encoder and controller are linked by clock and data diff eren al signal lines.

Digital - SSi Interface (absolute posi on)

Output signal parameters

Signal latency ~250 μSec

Output code Binary

Serial output SSi Diff eren al RS-422

Clock SSi Diff eren al RS-422

Monofl op me 25 μSec

Clock Frequency 0.5 ÷ 2.5 MHz

Posi on update (Max) 30 KHz

SSi - Wires color code

# Name Color Func on 1 Clock + Grey

SSi Clock2 Clock - Blue

3 Data - YellowSSi Data

4 Data + Green

5 GND Black Ground

6 +5V Red Power supply

Electrical parameters

Current consump on ~ 180 mA

t1 T

n * T

t3

Clock

t2 MSB

n n - 1 01LSB

Data

Monoflop

n total number of data bits includes the BIT.T clock period (sec) - user defi ned

1/T clock frequency 0.5 ÷ 2.5 MHz - user defi ned

t1T/2 ,minimum me required for the encoder to freeze data and preset the shi registers before receiving the fi rst rising edge to prompt the MSB

t2 data transmission delay (increases with cable length) , with standard Netzer wires / cables up to 1.5m , t2 ~ 0usec

t3 25usec + T/2 , required delay to refresh posi on data between subsequent posi on reads



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Digital - SSi Interface (absolute posi on)

So ware tools:

Advanced calibra on and monitoring op ons available by using the Electric Encoder Explorer so ware ( factory supplied ) using the NCP (Netzer Communica on Protocol) , the Encoder Explorer enables:

A. Calibra on, built-in tests (BIT) and advanced setup.B. Proper mechanical moun ng - setup and valida on c. Calibra on , off sets , CAA and user defi ned “zero”.



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Interconnec on op ons

DS

Product line

OD mm

Outputs:S - Digital : SSi 0 - Analog

0 - Loose wires 250 mmS - shielded cable R - Strain relief & shielded cable

Resolu on Binary

Code Bit CPR

F 17 131,072

G 18 262,144

Resolu on Decimal

Code Bit CPR

O 17 128,000

P 18 256,000

DS - 58 - 32 -S- S-

Fine EC/R

G 0

0 - fl ying leads C- connector

2- n n

Analog

Code 0

Custom



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DS-58[20] Moun ng op ons

Rotor moun ng op ons for stepped sha

End of sha Mid sha

Installa on kit’s CAT #

End of stepped sha : MA-DS58-20-004 Middle of steeped sha : MA-DS58-20-002

End of smooth sha : MA-DS58-20-001 Middle of smooth sha : MA-DS58-20-003

DS-58 rotor 0.05mm S.S. Shims : DS-58-R-01

30 AWG twisted pairs (3)

Braided shield

Jacket 0.45mm

Ø 3.45 ± 0.20

Netzer Cat No.: CB0001430 AWG twisted pair (3) : 2 (30 AWG 25/44 tinned copper , 0.15 PFE to Ø0.6 ± 0.05 ).Cable: Three 30 AWG twisted pairs. Shield: Tinned copper braided 95% min. coverage. Jacket:0.45 silicon rubber to Ø3.45 ±0.2

Pair # Color123

Red / BlackGray / Blue

Green / Yellow



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DS-58[20] Stepped sha moun ng



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Technology

Netzer ds 58-specsheet