H38D-1774-A-28V/OC-SC-UL datasheet, PDF

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H38D-1774-A-28V/OC-SC-UL: DescriptionRotary Position Encoder, Single,; CategoryLED optoelectronic/LED photoelectric; File Size165KB，7 Pages; ManufacturerSensata

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H38D-1774-A-28V/OC-SC-UL Overview

Rotary Position Encoder, Single,

H38D-1774-A-28V/OC-SC-UL Parametric

Parameter Name	Attribute value
Maker	Sensata
Reach Compliance Code	compliant
Other features	UL CERTIFIED
Configuration	SINGLE
Maximum operating temperature	70 °C
Minimum operating temperature
Optoelectronic device types	ROTARY POSITION ENCODER
Maximum supply voltage	28 V

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H38

INCREMENTAL OPTICAL ENCODER

Introduction

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

nonhazardous 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 anodized and dichromate

sealed finish. The H38 is suitable for use in petroleum service industries,

solvent refining operations, spray painting applications, and explosive

dust environments.

SPECIFICATIONS

Mechanical

Shaft Diameter

Shaft Loading

Shaft Runout

Starting Torque at 25°C

Bearings

Shaft Material

Enclosure

Bearing Life

Maximum RPM

Moment of Inertia

Weight

3/8” nominal

Up to 40 pounds axial and 20 pounds radial applied 1/4” from housing

0.0005 T.I.R

4.0 in-oz (max)

Class ABEC 7 standard

303 stainless steel

Die cast aluminum, hard anodized with dichromate sealed finish. Shaft seals and sealed

bearings are standard to achieve environmental ratings.

2 X 10

revs (1300 hrs at 2500 RPM) at rated load; 1 X 10

revs (67,000 hrs at 2500 RPM) at

10% of rated load

10,000 RPM (see frequency response, below)

4.1 X 10

–4

oz-in-sec

UL & MSHA/ 1.7 X 10

–3

oz-in-sec

CEN

64 oz typical (approx 4 lbs)

Page 1

www.sensata.com

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.

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 means 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: Vout = Vin). This driver is TTL

compatible 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 minute. Supply current is 90 mA

typical (plus load current).

15V/V:

Multi-voltage Line Driver (4469*): 100 mA source/sink. Input voltage 5 to 15 VDC +/- 5% standard (Note: Vout =

Vin). TTL compatible 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. See Doc. 01059-000 supplied with encoders for Important Installation and Usage notes summarized here.

Encoder Installation

1. Environment: Hazardous Locations —

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.

Page 4

www.sensata.com

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