Danfoss RS485 String Potentiometer (Yo-Yo) Sensor User guide

Brand: Danfoss

Model: RS485 String Potentiometer (Yo-Yo) Sensor

Type: User guide

Danfoss RS485 String Potentiometer (Yo-Yo) Sensor

The Danfoss RS485 String Potentiometer (Yo-Yo) Sensor is a rugged and easy-to-install sensor designed for use as a feedback sensor in measuring the cutting depth of a planer. It uses a 10-turn potentiometer as the sensing element for length measurement and provides an RS485 signal required by a System V/VI control system.

With a range of up to 450 mm (17.72 in) and an accuracy of ±0.2%, this sensor offers high precision in length measurement. The sealed housing and IP67 rating ensure protection against moisture and corrosion, making it suitable for use in harsh environments.

Danfoss RS485 String Potentiometer (Yo-Yo) Sensor

MAKING MODERN LIVING POSSIBLE

Technical Information

Sensor

RS485 String Potentiometer (Yo-

Yo) Sensor

powersolutions.danfoss.com

Revision history Table of revisions

Date Changed Rev

September 2015 Conversion to Danfoss layout BA

July 2013 Feature and Options list, operating/storage temperature and Dimension drawing BA

Janurary 2013 Length measurement AB

January 2013 First edition AA

Technical Information RS485 String Potentiometer (Yo-Yo) Sensor

2 L1223774 • Rev BA • September 2015

Overview

Description..........................................................................................................................................................................................4

Features................................................................................................................................................................................................4

Ordering information......................................................................................................................................................................4

Theory of operation.........................................................................................................................................................................4

Technical data

Electrical...............................................................................................................................................................................................5

Environmental................................................................................................................................................................................... 5

Installation

Dimensions.........................................................................................................................................................................................6

Pin assignments................................................................................................................................................................................7

Technical Information RS485 String Potentiometer (Yo-Yo) Sensor

Contents

L1223774 • Rev BA • September 2015 3

Description

The RS485 String Potentiometer (Yo-Yo) Sensor, designed for use as a feedback sensor in measuring the

cutting depth of a planer, uses a 10-turn potentiometer as the sensing element for length measurement.

This sensor provides an RS485 signal required by a System V/VI control system.

Features

•

Rugged housing

•

Easy to install

•

Internal “Snap-Back” protection

•

Quarter turn MS style connector

•

Length measurement up to 450 mm (17.72 in)

•

Sealed or unsealed housing

•

Short or long cable

•

Moisture and corrosion resistant

•

Withstands vibration and shock

Ordering information

Reference

Part number Housing Cable length

11111162 Sealed Short, 150 mm (5.91 in)

11020193 Sealed Long, 500 mm (19.69 in)

11020194 Unsealed Short, 150 mm (5.91 in)

11020195 Unsealed Long, 500 mm (19.69 in)

Related product part number Description

11109209 Coil Cord, 11 Socket 8 pin, 0.914 m to 4.572 m (3 ft to 15 ft) length

Theory of operation

The sensor is plugged into and powered by a System V/VI Grade Control System. The housing is attached

to the side of the machine. The cable is attached to a movable reference, i.e. side gate on a cold planer.

A set point value is set by the system and as the machine moves, the reference object moves up and

down. As the reference object moves up and down the cable retracts or extends and returns a

proportional RS485 signal to the Grade Control System which uses the signal to raise or lower the

machine to desired set point.

Technical Information

RS485 String Potentiometer (Yo-Yo) Sensor

Overview

4 L1223774 • Rev BA • September 2015

Electrical

Specifications

Input voltage

9 to 32 Vdc

Range

450 mm (17.72 in)

Accuracy (linearity)

± 0.2%

Resolution

Infinite

Output current

100 mA

Maximum load

120 mA maximum

Current draw

220 mA maximum

Environmental

Specifications

Operating temperature range

-20° C to 85o C [-4° F to 185° F]

Storage temperature range

-20° C to 85o C [-4° F to 185° F]

EMI/RFI rating

100 V/m

IP rating (with mating connector attached)

IP 67

Weight

0.34 kg (0.75 lbs)

Vibration

IEC 60068-2-64

Shock

IEC 60068-2-27 test Ea

Potentiometer sensor life

1,000,000 mechanical moves

Technical Information RS485 String Potentiometer (Yo-Yo) Sensor

Technical data

L1223774 • Rev BA • September 2015 5

Dimensions

RS485 String Potentiometer (Yo-Yo) Sensor: Retracted; and Extended

127.20 [5.01]

59.69 [2.35]

76.00 [2.99]

2.00 [0.08]

13.20 [0.52]

2.00 [0.08]

83.00 [3.27]

12.00 [.47]

150.00 [5.91]

500.00 [19.69]

150.20 [5.91]

Model Dependent

102.00 [4.02]

65.00 [2.56]

41.00 [1.61]

14.00 [0.55]

Technical Information RS485 String Potentiometer (Yo-Yo) Sensor

Installation

6 L1223774 • Rev BA • September 2015

Pin assignments

Pinout and wiring information

Comm A

Comm B

Ext input

Vbatt

Ground

Config

11 pin Amphenol® MIL-C-26482 connector

P108 190E

Technical Information RS485 String Potentiometer (Yo-Yo) Sensor

Installation

L1223774 • Rev BA • September 2015 7

Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and

electronic components. We specialize in providing state-of-the-art technology and solutions

that excel in the harsh operating conditions of the mobile off-highway market. Building on

our extensive applications expertise, we work closely with our customers to ensure

exceptional performance for a broad range of off-highway vehicles.

We help OEMs around the world speed up system development, reduce costs and bring

vehicles to market faster.

Danfoss – Your Strongest Partner in Mobile Hydraulics.

Go to www.powersolutions.danfoss.com for further product information.

Wherever off-highway vehicles are at work, so is Danfoss. We offer expert worldwide support

for our customers, ensuring the best possible solutions for outstanding performance. And

with an extensive network of Global Service Partners, we also provide comprehensive global

service for all of our components.

Please contact the Danfoss Power Solution representative nearest you.

Local address:

Danfoss

Power Solutions GmbH & Co. OHG

Krokamp 35

D-24539 Neumünster, Germany

Phone: +49 4321 871 0

Danfoss

Power Solutions ApS

Nordborgvej 81

DK-6430 Nordborg, Denmark

Phone: +45 7488 2222

Danfoss

Power Solutions (US) Company

2800 East 13th Street

Ames, IA 50010, USA

Phone: +1 515 239 6000

Danfoss

Power Solutions Trading

(Shanghai) Co., Ltd.

Building #22, No. 1000 Jin Hai Rd

Jin Qiao, Pudong New District

Shanghai, China 201206

Phone: +86 21 3418 5200

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to

products already on order provided that such alterations can be made without changes being necessary in specifications already agreed.

L1223774 • Rev BA • September 2015 www.danfoss.com

Danfoss A/S, 2013

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