E25 Incremental Optical Encoder

Mechanical Specifications

Coupling Bore: 1/4” and 3/8” nominal, standard

Starting Torque at 25° C: 0.07 in-oz typical

Bearings: Class ABEC 5

Coupling Material: Aluminum with protective finish

Bearing Housing

Cover: Drawn aluminum, 0.060” wall, protective finish standard. Die cast

aluminum with protective finish for EM, SM, ECS and SCS terminations

Maximum RPM: 10,000

Weight: 13 oz., typical

Enclosure Rating: NEMA 2 (IP43)

Electrical Specifications

Code: Incremental

Output Format: 2 channels in quadrature, 1/2 cycle index

gated with negative B channel

Cycles Per Shaft Turn: 1 to 28,800 (see table 2)

For resolutions above 3,600 see BEI for interpolation options

Supply Voltage: 5 to 28 VDC available

Current Requirements: 100 mA typical +output load, 250 mA (max)

Voltage/Output: (see note 5)

28V/V: Line Driver, 5–28 VDC in, Vout = Vin

28V/5: Line Driver, 5–28 VDC in, Vout = 5 VDC

28V/OC: Open Collector, 5–28 VDC in, OCout

Protection Level: Reverse, overvoltage and output short circuit (see note 5)

Frequency Response: 100 kHz, up to 800 KHz with interpolation option

(see note 7)

Output Terminations: (See table 1, back)

Note: Consult factory for other electrical options

Environmental Specifications

Temperature: Operating, 0º to 70º C; extended temperature

testing available (see note 8); Storage, -25º to 90º C unless

extended temperature option called out.

Shock: 50 g’s for 11 msec duration

Vibration: 5 to 2000 Hz @ 20 g’s

Humidity: 98% RH without condensation

NOTES & TABLES: All notes and tables referred to in the text can be

found on the back of this page.

Use this diagram, working from left to right to construct your model number (example:

e25BB-4H-500-aBZc-28V/V-sM18).

SPECIAL

FEATuRES:

S= Special

features specified

on purchase order

(consult factory)

See note 6

E = Heavy Duty

25 = 2.500” Dia.

CYCLES PER TuRN:

(Enter Cycles)

See Table 2

COMPLEMENTS

C = Complementary

Outputs

Blank = None

See note 4

OuTPuT

TERMINATION:

M16 = MS3102R16S-1P

M18 =MS3102R18-1P

C = Pigtail Cable

CS = Cable with seal

Cable length specified in inches

(i.e. C18 = Pigtail 18” long)

See table 1 & note 8

VOLTAgE/OuTPuT:

15V/V = 5-15 V

out

out

See note 5

OuTPuT

TERMINATION

LOCATION:

E = End

S = Side

OPTIONAL FACE MOuNTS

4H = 0.250 I.D., Std

4R = 0.250 I.D., High Performance

6R = 0.375 I.D., High Performance

See note 1

SHAFT SEAL

CONFIguRATION:

SB = Seal Integral with Bearing

Blank = Shielded Bearing

See note 2

NO. OF CHANNELS:

A = Single Channel

AB = Dual Quad. Ch.

ABZ = Dual with Index

AZ = Single with Index

See note 3

E25

HOuSINg CONFIg.

LETTER:

BA, BB, or BC

Installation Note:

To prevent damage,

the coupling must

be operated without

excessive axial com-

pression or extension.

For proper installation,

rotate the coupling on

the mating shaft prior

to tightening the set

screws.

C

The E25 Incremental Encoder is available with the following certifications:

EN 55011 and EN 61000-6-2

Canadian Standards

Class I, Zone 0, Group IIC

U.S. Standards Class I, Group A,B,C & D;

Class II Group E,F & G

CENELEC EEX ia IIC T4

tel: 805-968-0782 /800-350-2727 | fax: 805-968-3154 / 800-960-2726

7230 Hollister ave., Goleta, ca 93117-2807 |

www.beisensors.com

specification no. 02047-001 rev.08-11

The E25 has been designed as a light

duty encoder for applications such as

robotics, precision computer peripher-

als and OEM motors and controls.

It is designed with an integrated

mounting ring and shaft coupling.

the integrated mounting ring and

shaft coupling allow for simplified

installing and a low overall profile

when the unit is mounted on a motor.

These self-contained mounting and coupling

features can result in reduced interface cost.

COuPLINg DATA

STANDARD

COuPLINg

TYPE 4H

HIgH-PERFORMANCE

COuPLINg

TYPE 4R

TYPE 6R

Coupling Bore

.250/.251

.2500/.2505

.3750/.3755

Dimension A1(E25BA only)

.16

.08

.08

Dimension A2 (E25BB & BC)

.10

.02

.02

Axial Motion (Inches Max.)

±.010

±.020

±.030

Parallel Offset(Inches Max.)

.010

.010

.010

Angular Misalignment (Degrees Max.)

2

2

2

Torsional Spring Rate (arc-sec/oz-in)

52

15

21