S5 Optical Shaft Encoder

Photos (4)
Mechanical Drawings (1)

S5 Features

Small size
32 to 5,000 CPR (128 to 20,000 PPR)
Optional differential/line-driver output
Positive latching connector
2-channel quadrature with optional index
Multiple Output Drive Options
Ball-bearing option tracks to 10,000 RPM
Wide operating temperature

See more info below

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S5 Product Description

The S5 series optical shaft encoder is a non-contacting rotary to digital converter. Useful for position feedback or manual interface, the encoder converts real-time shaft angle, speed, and direction into TTL-compatible quadrature outputs with or without index. It operates from a single +5VDC supply.

Three shaft torque options are available:

Default (-D): sleeve bushing with higher damping for human interface applications.
Ball bearing (-B): miniature precision ball bearings suitable for high-speed applications.
Light static drag (-N): sleeve bushing with lower damping for low-speed applications.

A secure connection to the S5 Series encoder is made through a 5-pin (single-ended versions) or 10-pin (differential or high-voltage versions) latching connector. The mating connectors are available from US Digital with several cable options and lengths.

The internal differential line driver (26C31) can source and sink 20mA at TTL levels for differential versions. The recommended receiver is the industry-standard 26C32. Maximum noise immunity is achieved when the differential receiver is terminated with a 150 Ω resistor in series with a .0047 μF capacitor placed across each differential pair. The capacitor conserves power; otherwise, power consumption would increase by approximately 20mA per pair or 60mA for 3 pairs.

Product Specifications

ENVIRONMENTAL

Parameter	Value	Units
Operating Temperature, CPR < 2000	-40 to 100	C
Operating Temperature, CPR ≥ 2000	-25 to 100	C
Electrostatic Discharge Single-ended (S option), IEC 61000-4-2 Differential (D, L option), Human Body Model High-Voltage, Open-collector (H, C option), IEC 61000-4-2	± 4 ± 2 ± 4	kV
Vibration (10Hz to 2kHz, sinusoidal)	20	G
Shock (6 milliseconds, half-sine)	75	G

MECHANICAL

PARAMETER	SLEEVE BUSHING	BALL BEARING
Max. Acceleration	250000 rad/sec²	250000 rad/sec²
Max. Shaft Speed (mechanical)	100 rpm (1)	10000 rpm (1)
Max. Shaft Torque	0.5 in-oz (D-option) 0.3 in-oz (N-option)	0.05 in-oz (B-option)
Max. Shaft Loading	2 lbs. dynamic 20 lbs. static	1 lb.
Bearing Life	> 1000000 revolutions	L₁₀ = (19.3/F_r)³ * Where L₁₀ = bearing life in millions of revs, and F_r = radial shaft loading in pounds
Weight Single-ended (S option) Differential (D option) High-Voltage, Open-Collector (H, C option)	1.01 oz. 1.28 oz. 1.28 oz.	1.15 oz. 1.42 oz. 1.42 oz.
Max. Shaft Runout	0.0015 in. T.I.R.	0.0015 in. T.I.R.
Max. Panel Nut Tightening Torque	20 in-lbs	20 in-lbs
Technical Bulletin TB1001 - Shaft and Bore Tolerances		Download

* Only valid with negligible axial shaft loading.

(1) The maximum speed due to electrical considerations is dependent on the CPR. See the EM1 and EM2 product pages.

PHASE RELATIONSHIP

SINGLE-ENDED OPTION

S option provides 5V TTL compatible outputs
Specifications apply over the entire operating temperature range
Typical values are specified at Vcc = 5.0Vdc and 25°C
For complete details, see the EM1 or EM2 product pages

PARAMETER	MIN.	TYP.	MAX.	UNITS	CONDITIONS
Supply Voltage	4.5	5.0	5.5	V
Supply Current		27	33	mA	CPR < 500, no load
		54	62	mA	CPR ≥ 500 and < 2000, no load
		72	85	mA	CPR ≥ 2000, no load
Low-level Output			0.5	V	I_OL = 8mA max., CPR < 2000
			0.5	V	I_OL = 5mA max., CPR ≥ 2000
		0.25		V	no load, CPR ≥ 2000
High-level Output	2.0			V	I_OH = -8mA max. and CPR < 2000
	2.0			V	I_OH = -5mA max. and CPR ≥ 2000
		4.8		V	no load and CPR < 2000
		3.5		V	no load and CPR ≥ 2000
Output Current Per Channel	-8		8	mA	CPR < 2000
Output Current Per Channel	-5		5	mA	CPR ≥ 2000
Output Rise Time		110		nS	CPR < 2000
Output Rise Time		50		nS	CPR ≥ 2000, ± 5mA load
Output Fall Time		100		nS	CPR < 2000
Output Fall Time		50		nS	CPR ≥ 2000, ± 5mA load

DIFFERENTIAL OPTION

D Option provides differential line driver outputs
Specifications apply over the entire operating temperature range
Typical values are specified at Vcc = 5.0Vdc and 25°C
For complete details, see the EM1 and EM2 product pages

PARAMETER	MIN.	TYP.	MAX.	UNITS	CONDITIONS
Supply Voltage	4.5	5.0	5.5	V
Supply Current		29	36	mA	CPR < 500, no load
		56	65	mA	CPR ≥ 500 and < 2000, no load
		74	88	mA	CPR ≥ 2000, no load
Low-level Output		0.2	0.4	V	I_OL = 20mA max.
High-level Output	2.4	3.4		V	I_OH = -20mA max.
Differential Output Rise/Fall Time			15	nS

HIGH-VOLTAGE OPTION

H option uses a higher supply voltage and provides both single-ended and open-collector outputs
Single-ended outputs are 5V TTL compatible (same as S option). See Pin-out.
Specifications apply over the entire operating temperature range
For complete details, see the EM1 or EM2 product pages

PARAMETER	MIN.	TYP.	MAX.	UNITS	CONDITIONS
Supply Voltage	7.5		30.0	V
Supply Current, 24V power		8	10	mA	CPR < 500, no load
		16	19	mA	CPR ≥ 500 and < 2000, no load
		22	25	mA	CPR ≥ 2000, no load
Open Collector "On" Resistance		2		ohms
Open Collector Sink Current			200	mA
Output Low Voltage			0.4	V	200 mA sink current
Open Collector Pullup Voltage			50	V

PIN-OUTS

5-PIN SINGLE-ENDED S OPTION (1)		10-PIN DIFFERENTIAL D OPTION (2)
Pin	Description	Pin	Description
1	Ground	1	Ground
2	Index	2	Ground
3	A channel	3	Index-
4	+5VDC power	4	Index+
5	B channel	5	A- channel
		6	A+ channel
		7	+5VDC power
		8	+5VDC power
		9	B- channel
		10	B+ channel

10-PIN HIGH-VOLTAGE H OPTION (2)
Pin	Description
1	Ground
2	Ground
3	Index- (open collector)
4	Index+ (single-ended)
5	A- channel (open collector)
6	A+ channel (single-ended)
7	7.5-30V power
8	7.5-30V power
9	B- channel (open collector)
10	B+ channel (single-ended)

(1) 5-pin single-ended mating connector is CON-FC5.
(2) 10-pin differential mating connector is CON-FC10.

PRODUCT CHANGE NOTIFICATIONS

Title	Date	Description	Download
EM1 & EM2 Update - PCN 4199	1/14/2014	Based on our continuous process improvement program, US Digital is changing the current marking method for our EM1 and EM2 encoder modules to a serialization method. This change will allow for each module to have a unique code; the current marking method is based on a date code system that includes all encoder modules produced within a specific week / year. The serialization system will be based on a hexadecimal system.	Download
EM1 LED Die - PCN 1016	2/7/2013	As part of US Digital’s continual assurance of supply strategy, we have qualified additional sources for our LED die used in our EM1 encoder module, which in turn impacts all of the following products: EM1, E2, E3, E5, E6, H1, H15, H3, H5, H6, HB5M, HB6M, HD25, PE, S1, S2, S5, S6, T5 and T6 The device specification will remain the same, i.e. there will be no change to form, fit or function of the product(s) as specified by US Digital. The appropriate quality and reliability testing has been performed on representative products to ensure normal parametric distribution, consistent with US Digital's quality and reliability standards.	Download

Additional Information

Product Notes

Cables and connectors are not included and must be ordered separately.
For ordering information please see the Compatible Cables / Connectors section above.
US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.

Datasheets

S5-Datasheet.pdf

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