US Digital

H15 Servo Mount Encoder

Overview

Industry standard size 15 mounting
2-channel quadrature, TTL squarewave outputs
Optional index (3rd channel)
Differential outputs available
Optional Avago / Agilent compatible pin-out
# Positive finger-latching connector
32 to 1250 cycles per revolution (CPR)
# 128 to 5000 pulses per revolution (PPR)
# Tracks from 0 to 100,000 cycles/sec
# -40 to +100C operating temperature

The H15 series ball bearing optical shaft encoder has a servo mount size 15 machine aluminum flange with a molded polycarbonate housing. This non-contacting rotary to digital converter is...

Product Specifications

Parameter	Dimension / Units
Shaft Speed	10,000 RPM max. continuous
Acceleration	10,000 rad/sec²
Shaft Torque	0.05 in. oz. max.
Shaft Loading	2 lbs. max.
Bearing Life	(90/P)³ = life in millions of revs. where P = radial load in pounds.
Weight Single-ended (H15S) Differential (H15D)	2.2 oz. 2.3 oz.
Shaft Runout	.0006 T.I.R. max.
Moment of Inertia	6.1E-6 oz in s²
Vibration	20 g. 5 to 2KHz

B leads A in a clockwise shaft rotation, and A leads B in counterclockwise shaft rotation viewed from the shaft side of the encoder (see the EM1 / HEDS page).

Specifications apply over entire operating temperature range.
Typical values are specified at Vcc = 5.0Vdc and 25°C.
For complete details see the EM1 and HEDS product pages.

	Supply Current	Output voltage low	Output voltage high
Resolution	Typ / Max	Max	Min	Based on
50,96, 100, 110, 120, 192, 200, 250, 256, 360, 400, 500, 512, 540 CPR, non-index	17 / 40 mA	0.4 volts @ 3.2mA	2.4 volts @ -200uA	Low-res HEDS
1000, 1016, 1024 CPR, non-index	57 / 85 mA	0.5 volts @ 8mA	2.4 volts @ -40uA	High-res HEDS
32 CPR, with index	27 / 30 mA	0.5 volts @ 8mA	2.0 volts @ -8mA	EM1
50,96, 100, 192, 200, 250, 256, 360, 400, 500, 512 CPR, with index	57 / 85 mA	0.5 volts @ 8mA	2.4 volts @ -40uA	High-res HEDS
720, 900, 1000, 1024, 1250 CPR, with index	55 / 57 mA	0.5 volts @ 8mA	2.0 volts @ -8mA	EM1

Parameter	Min.	Typ.	Max.	Units	Notes
Supply	4.5	5.0	5.5	Volts
Current Consumption - Index: 32 CPR	-	28	53	mA	No load
Current Consumption - Index: 720, 900, 1000, 1250 CPR	-	56	59	mA	No load
Current Consumption - Index: All Other Resolutions	-	58	88	mA	No load
Current Consumption - Non-index: <2000 CPR	-	18	43	mA	No load
Current Consumption - Non-index: >=2000	-	58	88	mA	No load
Output Voltage - Sourcing to +5	2.4	3.4	-	Volts	@ -20mA
Output Voltage - Sinking to Ground	-	0.2	0.4	Volts	@ 20mA

For complete details see the EM1 / HEDS page.

5-pin Single-ended		10-pin Differential Standard		10-pin Differential (L-option*)
Pin	Description	Pin	Description	Pin	Description
1	Ground	1	Ground	1	No connection
2	Index	2	Ground	2	+5VDC power
3	A channel	3	Index-	3	Ground
4	+5VDC power	4	Index+	4	No connection
5	B channel	5	A- channel	5	A- channel
		6	A+ channel	6	A+ channel
		7	+5VDC power	7	B- channel
		8	+5VDC power	8	B+ channel
		9	B- channel	9	Index-
		10	B+ channel	10	Index+

* Avago / Agilent compatible version.

Product Description

The H15 series ball bearing optical shaft encoder has a servo mount size 15 machine aluminum flange with a molded polycarbonate housing. This non-contacting rotary to digital converter is designed for applications requiring a size 15 servo mount. The H15 utilizes either a 5-pin or 10-pin finger-latching connector depending upon the encoder output option.

The H15 is fully assembled with a shaft, two 1/4" ID by 1/2" OD heavy duty ball bearings and a servo mount adapter. The shaft is made of stainless steel. The H15 may be mounted and held in position by either attaching to the 4-40 machine screw holes in the base or by using the attached servo ring and separate servo cleats (see Accessories on the next page).

The single-ended output version is normally designed for applications of 6 feet or less. For longer cable lengths, the differential output version is recommended.

A secure connection to the H15 is made through a 5-pin (single-ended versions) or 10-pin (differential versions) finger-latching connector (sold separately). The mating connectors are available from US Digital with several cable options and lengths.

For differential versions: the internal differential line driver (26C31) can source and sink 20mA at TTL levels. The recommended receiver is industry standard 26C32. Maximum noise immunity is achieved when the differential receiver is terminated with a 110-ohm resistor in series with a .0047 microfarad capacitor placed across each differential pair. The capacitor simply conserves power; otherwise power consumption would increase by approximately 20mA per pair, or 60mA for 3 pairs.

Product Notes

Cables and connectors are not included and must be ordered separately.
US Digital warrants its products against defects in materials and workmanship for two years. See complete warranty for details.