BEI Sensors ES25 User Manual

ES25

Environmentally Sealed Incremental Encoder

The ES25 is a rugged incremental encoder that is environmentally
sealed through the use of a magnetic shaft coupling connection.
This connection allows the encoder to be completely enclosed
and sealed against water ingress. It is rated to IP67 and can
operate while fully immersed in one meter of water for up to 30
minutes. The magnetic coupling isolates the encoder from
external equipment, protecting it from high shock, vibration and
environmental debris. Since the ES25 is not physically coupled to
external equipment, the problem of shaft misalignment is
eliminated, meaning no more broken couplings!
The ES25 is ideal for applications with heavy wash-downs,
temporary water immersions, and excessive environmental
debris. It combines the high accuracy, repeatability and
robustness needed for use in harsh environments and can help
reduce costly downtime of your system.

Specifications

Mechanical

Mating Shaft Diameter: 1/4” and metric version
Magnetic Coupling Cover: Eng
Starting Torque: 0.5 oz-in max

Maximum RPM: 5000 RPM

ertia: 62.3 X 10 oz-in-sec
celeration: 24,000 rad

Kinemat

ic Error: 3 arc-min

18 oz W

eight:

ineered plastic

d aluminum castings) Enclosure: Aluminum (seale

-4 2

eg/ z-in Torsional flexibility: 0.37 d o

RMS

/s/s Maximum Ac

s

Moment of In

Electrical

Supply Voltage: 5 to 28 VDC available

Voltage/ Output:

28V/V: Line Driver, 5-28 VDC in, V out = V in
28V/5: Line Drive, 5-28 VDC in, V out = 5 VDC
28V/OC: Open Collector, 5-28 VDC in, OC out
Current Requirements: 100 mA typical + output load, 250
mA (max)
Protection Level: reverse, overvoltage and output short
circuit

Code: Incremental
Output Format: 2 Channels in quadrature, with ½ cycle index

gated with negative B channel

Cycles per Shaft Turn: 1 to 2,048 (See Table 1)
Frequency Response: 100 KHz

utput Terminations: (See Table 2)

O

Environmental

Temperature: Operating, 0° to 70°C; storage (non-operating),

-25° to 90°C. Consult factory for extended temperature
ratings.

Shock: 25 g’s for 11 msec duration

Vibration: 5 to 2000 Hz @ 10 g’s
Humidity: 100% RH with condensation
Enclosure Rating: IP67 / IP68 (Consult factory for IP68

pplications) a

ES25 Environmentally Sealed Incremental Encoder Ordering Options For assistance, call 800-350-2727

Use this diagram, working from left to right, to construct your model number.

Example: ES25D-37-500-ABZC-28V/V-SM18-S (-S: special shaft, diameter/ length, output level or termination)

ES25

Type:

2.50” Diameter
Housing

D

Magnetic Hub Bore:

25 = 0.250”

lank = None B

Consult factory for other sizes

Housing Config:

D = Square Flange

Cycles per Turn:

See Resolution Table 2

Channels:

ABZC = Dual with Index
and complements

ABZ = Dual w/index

ABC = Dual w/comp.

Voltage/Output

28V/V = 28 V in/out
28V/5 = 28 V in/5 out
28V/OC = 5-28Vin / OC out

Tel:[phone] | F 805-968-3154 / 800-960-2726

Output L

S = Side

7230 Hollister Ave., Goleta, CA 93117 | www.beisensors.com

S

ocation:

Special Feature

Consult Factory

Output Termination:
M14 = MS3102R14-1P
M16 = MS3102R16-1P
M18 = MS3102R18-1P

ax:

Specification No. 02104-001 Rev. 06/11

S

s:

Table 1: Resolutions

1 2 3 5 6 8 10 11 13 16 20 24 25 26 30 32 33
34 36 37 40 45 48 50 51 60 64 66 72 75 80 86 88 90
100 102 120 122 125 127 128 132 144 148 150 158 160 175 176 180 187
192 200 202 217 220 240 250 254 255 256 274 280 283 288 292 300 312
320 321 325 360 366 372 375 377 380 381 384 385 393 400 430 432 450
462 480 490 500 502 508 512 522 530 550 576 598 600 604 625 628 635
638 640 660 687 690 700 720 725 735 740 744 748 750 762 768 780 785
800 812 825 850 864 878 888 900 912 914 938 942 955 960 1000 1016 1024
1030 1035 1036 1040 1054 1056 1074 1076 1080 1088 1100 1101 1125 1136 1200 1237 1250
1257 1270

650

1280

666

1300

718

1 1 1 1 1 1 1 1 1 1 1 1 2 2048

1314

745

1332

774

1333

800

1390

850

1400

855

1414

875

1427

894

1440

920

1484

952

1500

968

1562

979

1570

995

1596

000 1600 1 1 1

Table 2: Output Terminations

M Con18 nector

PIN Cha el nn

A A
B B
C Z
D +V
E ---

F 0V
G CG
H A/

I B/

J Z/

ES25 Dimensions

(4) Ø 0.21

2.49

0.25

Output Waveform

1.65

1.032

2.064

R0.13

Magnetic Hub

Magnetic Hub Bore .250”
BEI Part No. 924-38540-250

supplied with encoder)

(

Consult factory for other bore sizes

Axis of rotation

3.20

Tel:[phone] | Fax: [phone]

7230 Hollister Ave., Goleta, CA 93117 | www.beisensors.com

These commodities, technology or software if exported from the United States must be in accordance with the

Industry, and Security, Export Administration regulations. Diversion contrary to U.S law is prohibited.

Specification No. 02104-001 Rev. 06/11

2.62

SQ

Bureau of