DYNAPAR M21 Series Manuale di installazione

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Encoder Installation Manual

Dynapar

™

brand

SERIES M21

Modular Encoder

Document No.: 702209-0001

Revision Level: J

October 24, 2016

DESCRIPTION

The Dynapar brand M21 modular encoder

provides high-performance, cost effec-

tive feedback for stepper and servo motor

controls. Using industry standard package

dimensions, the M21 is easily installed

onto the motor without time-consuming

adjustments or special tools. Its unique

mechanical design automatically centers

and gaps the disc during installation.

For Brushless DC (BLDC) servo control,

optional 3 phase commutation tracks

replace the traditional Hall Effect sensors.

These optically-generated signals provide

higher accuracy and reliability, improving

the performance and reliability of the servo

system.

Dynapar Exclusive: The M21 design oper-

ates up to 120°C. The high temperature

plastics, phased array sensor, and low

current requirements stabilize the output

signals over a wide range of input voltage,

ambient temperature, or output frequen-

cies.

Dynapar Exclusive: The M21 provides 30

degrees of adjustment to align the signal

outputs to the shaft position. Using an

industry standard Size 21 modular mount-

ing pattern, the index mark on the disc hub

can be coarse aligned to the index sensor

position on the housing. The housing

rotates to allow further adjustment of the

index or fine alignment of the commutation

channels to the BLDC motor windings.

Dynapar Exclusive: The M21 enclosure is

dirt-tight, rated NEMA 1 / IP50. The cover

is gasketed to seal the disc and optics

from contamination. Additionally, the base

can be sealed to the motor for further

environmental protection.

Dynapar Exclusive: The M21 outputs are

protected from short circuits, and operate

on 5 or 12 VDC power.

Polígono Industrial O Rebullón s/n. 36416 - Mos - España - [email protected]

SPECIFICATIONS

ELECTRICAL

Code: Incremental

Resolution: (pulses/revolution)

Incremental: 500 to 2048 PPR

Commutation: 2, 3, or 4 PPR

Accuracy:

Incremental: ±5 arc-mins. max. edge to edge;

Commutation: ±6 arc-mins. max.

Sense: (viewing encoder mounting surface)

Incremental: A leads B by 90° for CCW rotation of

motor shaft;

Commutation: U leads V, V leads W by 120° for CW

rotation of motor shaft

Phasing:

Incremental: 90° ±18° electrical

Commutation: 8 Pole: 30°; 6 Pole: 40°;

4 Pole: 60° mechanical

Index to U Channel: ±1° mechanical - Index center

to U channel edge

Symmetry:

Incremental: 180° ±18° electrical

Commutation: 8 Pole: 45°;

6 Pole: 60°; 4 Pole: 90° mechanical

Index Pulse Width: 180° ±36° electrical (Gated with

B low) standard

Input Power Requirements:

Incremental: 5 or 12 VDC ±10% at 100 mA max.

(excluding output load);

Commutation: 5 or 12 VDC ±10% at 75 mA max.

(excluding output load)

Output Signals:

ET7272 Line Driver: 40 mA sink/source max.;

Open Collector w/2.0 kΩ pull-ups: 16 mA sink max.

Frequency Response: 200 kHz min.

Termination:

Connector: PCB mounted dual row head with 0.1"

x 0.1" pin spacing, 10 pins (incremental only),

16 pins (w/commutation); Cable: conductors - 28

AWG, stranded (7/36), insulation - black, PVC;

Shield: aluminum/polyester foil plus tinned, copper

drain wire (28 AWG, 7/36)

Noise Immunity: Conforms to EN50082-1 Light Industrial

for Electro-Static Discharge, Radio Frequency

Interference, Electrical Fast Transients, Conducted

Interference, and Magnetic Fields (for models or

applications with shielded cable)

Application Assistance 1.800.234.8731 (847.662.2666)

+34 986 288118

Servicio de Att. al Cliente

MECHANICAL

Weight:

Connector: 1 oz. (28 gm) typ.

Connector w/cover: 1.5 oz. (43 gm) typ.

Cable: 2.5 oz (71 gm) typ.

Cable w/cover: 3 oz. (85 gm) typ.

Dimensions:

Outside Diameter: 2.1" (53 mm) max. with cover,

2.0" (51 mm) max. without cover; Height: 0.8"

(20.3 mm) max. (w/cover, excluding connector);

Emitter to Detector Gap: 0.070" (1.8 mm) min.

Material:

Base, Housing, & Cover: high temperature, glass

filled polymer;

Hub: Aluminum; Disk: 0.030" thick glass

Finish:

Base & Housing: black;

Cover: RAL 7010 (dark grey)

Moment of Inertia: 6.64 x 10

in-oz sec.

-5

Hub Diameters: 1/4", 3/8", 7/16", 1/2", 6 mm, 8 mm,

10 mm, 12 mm nominal

Hub Dia. Tolerance: +0.001"/-0.000"

(+0.026 mm/-0.000 mm)

Mating Shaft Length: 0.45" (12 mm) min. blind hub

clamp screw, 0.65" (16.5 mm) exposed hub clamp

screw; 0.75" (19 mm) max. inside cover

Mating Shaft Runout: 0.002" (0.05 mm) max. (Includes

shaft perpendicularity to mounting surface)

Mating Shaft Endplay: +0.005"/-0.015" (+0.13 mm/-0.38

mm) nominal ("+" indicates away from mounting

face)

Mounting:

Base: (2) #4-40 (M2.5) #1 Phillips fillister head

cap screw on 1.812" (46 mm) B.C., 0.01" (0.254

mm) true position to shaft; Shaft: split hub w/collar

clamp, #2-56 hex socket cap screw (5/64" hex

wrench included)

Electrical/Mechanical

Alignment Range: ±15° mechanical

Acceleration: 100,000 rad/sec.

max.

Velocity: 12,000 RPM max.

ENVIRONMENTAL

Operating Temperature: -40° to 120°C

Storage Temperature: -40° to 85°C

Shock: 50 G's for 11 msec duration

Vibration: 2.5 G's at 5 to 2000 Hz

Relative Humidity: 90% noncondensing

Enclosure Rating: NEMA 1 / IP50 dirt-tight (for models

with cover)

(4.7 gm-cm

)

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