H38 Incremental Optical Encoder
Mechanical
Specifications
Shaft Diameter:
3/8” nominal
Shaft Loading:
Up to 40 pounds
axial and 20 pounds radial applied
1/4” from housing
Shaft Runout:
0.0005 T.I.R.
Starting Torque at 25° C:
4.0 in-oz (max)
Bearings:
Class ABEC 7 standard
Shaft Material:
303 stainless steel
Enclosure:
Die cast aluminum, hard
anodized with sealed finish. Shaft seals
and sealed bearings are standard to
achieve environmental ratings.
Bearing Life:
2 X 10
8
revs (1300 hrs at
2500 RPM) at rated load; 1 X 10
10
revs
(67,000 hrs at 2500 RPM) at 10% of
rated load
Maximum RPM:
10,000 RPM
(see Frequency Response, below)
Moment of Inertia:
4.1 X 10
–4
oz-in-sec
2
UL & MSHA/ 1.7 X
10
–3
oz-in-sec
2
CEN
Weight:
64 oz typical (approx 4 lbs)
Voltage/Output:
(see note 3)
15V/V: Line Driver, 5–15 VDC in, Vout = Vin
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 3)
Frequency Response:
100 KHz Typical,
Higher frequency response available, see
note 5
Output Terminations:
see Table 1,
back page
Termination Type:
Compression type,
UL recognized. Accepts AWG 14 to 22,
stranded wire, strip 1/4”
Note:
Consult factory for other
electrical options
The H38 is an explosion
proof version of the field-
proven H25 encoder series.
The H38 is UL certified
for NEMA Class 4X
and 6 (outdoor non-
hazardous locations)
and Class 4X and 13
(indoor non-hazardous
locations). It is available with
single and triple certifications for use
in hazardous locations and includes a standard
shaft seal, double bearing seals, and a cast aluminum housing with hard anod-
ized and dichromate sealed finish. The H38 is suitable for use in petroleum service
industries, solvent refining operations, spray painting applications, and explosive dust
environments.
Environmental
Specifications
The H38 Incremental Encoder is available with the following certifications:
EN 61000-6-4 and EN 61000-6-2
II 2 G Ex d IIB T4 Gb
Class I, Group C & D;
Ex d IIB T4
Class II Group E, F & G;
UL 14.0006x
Class I, Grou D
The Mine Safety and Health Administration (MSHA) is an organization
that operates in the United States and enforces compliance with safety
and health standards in the Nation’s mines. Consult factory for MSHA rated product.
Enclosure Rating:
NEMA 4X & 6
(IP66), outdoor Non-Hazardous
locations, NEMA 4X & 13 (IP66),
indoor Non-Hazardous locations
Temperature:
Standard operating, 0º to
70º C; CEN: -50º to +90ºC; UL: -40º to
+80º C; storage:-25º to 90º C.
Shock:
50 g’s at 11 msec
Vibration:
5 to 2000 Hz @ 20 g’s
Humidity:
100% RH
Code:
Incremental
Hazardous Area Rating:
UL listed for
Output Format:
2 channels in quadra-
ture, 1/2 cycle index gated with negative use in hazardous locations. Class I, Group
D, or Class I, Groups C & D, and Class II,
B channel
Cycles per Shaft Turn:
1 to 72,000 (see Groups E, F & G. NEMA Enclosure 7.
table 2, back page). For resolutions above
3,600 see Note 7.
NOTES & TABLES:
Supply Voltage:
5 to 28 VDC
All notes and tables referred to in the text
Current Requirements:
100 mA typical can be found on the back page.
+output load, 250 mA (max)
Electrical
Specifications
H38 Explosion Proof Ordering Options
H38
TYPE:
H = Heavy Duty
38 = 3.75” Square
FOR ASSISTANCE CALL
800-350-2727
Use this diagram, working from left to right to construct your model number (example:H38D-2000-ABZC-28V/V-SC-CEN).
All notes and tables referred to can be found on the back of this page.
CERTIFICATION:
CYCLES PER TURN: NO. OF CHANNELS:
VOLTAGE/OUTPUT:
UL = Class I Group D Environments
A = Single Channel
Enter Cycles,
15V/V = 5–15 Vin/out
CEN = UL, Cenelec, IECEx
AB = Dual Quad. Ch.
See Table 2
28V/V = 5–28Vin/out
MSHA = Mine Safety and Health
HOUSING
ABZ = Dual with Index
28V/5 = 5–28Vin/5Vout
Administration Certified
CONFIGURATION:
SPECIAL
AZ = Single with Index
28V/OC = 5–28Vin/OCout
D = Standard,
FEATURES:
See note 1
See note 3
(see dimensions, back page)
S = Special
COMPLEMENTS:
OUTPUT TERMINATION:
features specified
C = Complementary Outputs,
SC = Side Conduit, 1/2–14 NPSF
on purchase order
Blank = None
(dryseal) straight pipe threads
(consult factory)
See note 2
Accepts both NPS and NPT Type
See note 4
fittings
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. 02051-001 Rev.03-15 Rev A
H38 Incremental Optical Encoder
Dimensions
Tables
Table 1- Output Terminations
TERMINAL PIN NO.
1
2
3
4
5
6
7
8
9
10
11
OUTPUT
CASE GROUND
0V
+V
A
B
Z
A
B
Z
SPARE
SPARE
Table 2 – Disc Resolutions
for Incremental Encoder
Model H38
1, 2, 3, 5, 6, 7, 8, 10, 13, 16, 20, 24, 25, 26,
30, 32, 33, 34, 36, 37, 40, 45, 48, 50, 51, 56*,
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,
204*, 217, 220, 240, 250, 254, 255, 256, 264*,
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, 560*, 576,
598, 600, 604, 625, 628, 635, 638, 640, 660,
672, 676, 680, 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, 1280, 1300, 1314,
1332, 1333, 1390, 1400, 1414, 1427, 1440,
1484, 1500, 1562, 1570, 1596, 1600, 1650,
1666, 1718, 1745, 1774, 1800, 1840*, 1850,
1855, 1875, 1894, 1920, 1952, 1968, 1979,
1995, 2000, 2048, 2080, 2094, 2100, 2160,
2164, 2199, 2200, 2250, 2356, 2400, 2485,
2500, 2514, 2519, 2540, 3000, 3125, 3600,
4000, 4096, 5000
*AB or ABC output only.
NOTE: Resolutions up to 72,000 are available. See Note 7.
Notes
1.
Non-standard index widths and multiple indices are available by
special order. Consult factory.
2.
Complementary outputs are recommended for use with line driver
type (source/sink) outputs. When used with differential receivers, this
combination provides a high degree of noise immunity.
3. Output IC’s:
Output IC’s are available as either Line Driver
(LD) or NPN Open Collector (OC) types. Open Collectors require
pull-up resistors, resulting in higher output source impedance
(sink impedance is similar to that of line drivers). In general, use
of a Line Driver style output is recommended. Line Drivers source
or sink current and their lower impedance mean better noise
immunity and faster switching times.
Warning:
Do not connect
any line driver outputs directly to circuit common/OV. Those may
damage the driver. Unused outputs should be isolated and left
floating. Our applications specialists would be pleased to discuss
your system requirements and the compatibility of your receiving
electronics with Line Driver type outputs.
28V/V:
Multi-voltage
Line Driver (7272*): 100 mA source/sink. Input voltage 5 to 28
VDC +/- 5% standard (Note: V
out
= V
in
). This driver is TTL com-
patible when used with 5 volt supply. Supply lines are protected
against overvoltage to 60 volts and reverse voltage. Outputs are
short circuit protected for one minute. Supply current is 120 mA
typical (plus load current). This is the recommended replacement
for 3904R and 7406R open collector outputs with internal pullup
resistors. It is also a direct replacement for any 4469, 88C30,
8830 or 26LS31 line driver
28V/5:
Multi-voltage Line Driver
(7272*): 100 mA source/sink. Input voltage 5 to 28 VDC +/- 5%
standard, internally regulated with 5V (TTL compatible) logic out.
Supply lines are protected against overvoltage to 60 volts and
reverse voltage. Outputs are short circuit protected for one min-
ute. Supply current is 90 mA typical (plus load current).
15V/V:
Multi-voltage Line Driver (4469*): 100 mA source/sink. Input volt-
age 5 to 15 VDC +/- 5% standard (Note: V
out
= V
in
). TTL com-
patible when used with 5 volt. Supply lines are protected against
overvoltage to 60 volts and reverse voltage. Outputs are short
circuit protected for one minute. Supply current is 90 mA typical
(plus load current). This is a direct replacement for the 4469 Line
Driver.
28V/OC:
NPN Open Collector (3904*, 7273*). Current
sink of 80 mA max. Current sourced by external pull- up resistor.
Output can be pulled up to voltage other than supply voltage (30 V
max). Input voltage 5 to 28 VDC
+
/- 5% standard. Supply current
is 120 mA typical. This replaces prior IC’s with designations of
3904, 7406, 3302, 681 and 689.
5V/OCR, 15V/OCR, 24V/OCR:
Open Collector (3904R*, 7406R*, 7273R*): Current sink of 70 mA
max. Includes internal pull-ups sized at approximately 100 ohms/
volt. Max current source is 10 mA. Supply current is 100 mA
typical, 120 mA with internal pull-ups. The 5V/OCR, 15V/OCR and
24V/OCR are often replaced by the 28V/V in system upgrades.
4.
Special –S at the end of the model number is used to define
a variety of non-standard features such as special shaft lengths,
voltage options, or special testing. Please consult the factory to
discuss your special requirements.
5.
Higher frequency response may be available. Please consult
with the factory.
6.
Extended temperature ratings are available. Consult with factory
for more specific information.
7.
For interpolation options, contact factory.
Encoder Installation:
1.
Environment: Hazardous Locations —
UL
Complies with UL and
cUL requirements;
CEN
Shall comply with UL requirements plus
CENELAC/ATEX plus IECEx standards
2.
WARNING: Open all circuits prior to connecting this product to
power and controller.
3.
The installation must comply with NEC Class 2 circuits or with
the regulations of the country of use.
4.
AWG 14 - 22 stranded wire stripped to .25” [6.3mm} is recommended.
5.
Use agency approved 105° C minimum rated cable/conductors
housed within an approved rigid conduit.
6.
Conduit runs must have a sealing fitting certified to 60079-0 Ex d
IIB immediately at the entrance to the device.
7.
Tightly close terminal block access cover prior to applying power.
8.
For maximum bearing life, a flexible coupling is recommended
between encoder shaft and driving shaft.
9.
Thread sealant compound should be used for 1/2-14 fitting or
cable gland to prevent ingress of contamination.
During Use:
1.
Keep terminal block access tightly secured during use.
2.
DO NOT loosen two 5/16” set screws at opposite face.
Maintenance and Service:
1.
There are no user serviceable parts inside. Encoder must be
returned to factory for service.
2.
WARNING: Open all circuits to this product prior to opening
access cover to disconnect wires.
Tel: 805-968-0782 /800-350-2727
Fax: 805-968-3154 / 800-960-2726
7230 Hollister Ave., Goleta, CA 93117-2807
www.beisensors.com
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