RN6027 - Rotary encoder IFM - Free user manual and instructions

Product type	Absolute rotary encoder
Brand	IFM
Model	RN6027
Power supply	5 V DC or 10-30 V DC depending on version
Resolution	Up to 12 bits (4096 steps per revolution)
Outputs	TTL (5 V) or HTL (10-30 V), short-circuit protected
Max mechanical rotation speed	10,000 min⁻¹
Max electrical rotation speed	6000 min⁻¹ (≤10 bit), 3000 min⁻¹ (11 bit), 1500 min⁻¹ (12 bit)
Max cable length	20 m (5 V version), 100 m (10-30 V version)
Outer diameter	Approximately 58 mm
Overall length	Approximately 50 mm
Weight	Approximately 150 g
Main functions	Conversion of rotational movements into numerical values; measurement of angular positions
Electrical connection	By shielded cable or connector; shield to be connected to ground
Mounting	Use a flexible coupling; avoid shocks to the shaft
Maintenance and cleaning	Clean with a dry cloth, without solvent
Safety	Disconnect the installation from power before any connection or mounting
Spare parts and repairability	Contact IFM after-sales service for any repair
General information	Manual available in several languages; CE certified

Frequently Asked Questions - RN6027 IFM

What is the supply voltage of the RN6027 encoder?

The IFM RN6027 encoder is available in two versions: 5 V DC (TTL output) or 10-30 V DC (HTL output). Check the label on the device for the exact version.

How to connect the cable shield?

The cable shield must be connected to the encoder housing, connector, and evaluation electronics, then to ground. This reduces electromagnetic interference.

What is the maximum allowed rotation speed?

The maximum mechanical speed is 10,000 min⁻¹. The maximum electrical speed depends on the resolution: 6000 min⁻¹ for ≤10 bit, 3000 min⁻¹ for 11 bit, and 1500 min⁻¹ for 12 bit.

How to select the rotation direction of the encoder?

For 8 to 10-bit encoders, the rotation direction can be selected by connecting the MSB wire: to +5 V/+U for clockwise rotation, to 0 V for counterclockwise rotation.

What to do if the outputs are inactive?

Check the enable wires (Enable A and B). They must be at low level (0 V) to activate the outputs. If they are at high level, the outputs are blocked.

What cable length can I use?

For the 5 V version, the maximum length is 20 m. For the 10-30 V version, it can reach 100 m. Maintain a distance of at least 20 cm from interference sources.

How to mount the encoder on a motor?

Use a flexible coupling between the encoder and the motor to avoid damaging the shaft. Do not hit the shaft and do not use aggressive tools. Mount the device with power off.

What does the MSB and LSB notation on the wires mean?

MSB (Most Significant Bit) is the most significant bit, LSB (Least Significant Bit) is the least significant bit. They correspond to binary data outputs. The MSB connection also allows changing the rotation direction.

Is the encoder protected against short circuits?

Yes, the outputs are protected against short circuits between the outputs and U_N or U_P for less than one minute. Do not expose the device to prolonged short circuits.

How to clean the encoder?

Clean the outside with a dry, lint-free cloth. Do not use solvents or abrasive products that could damage the housing or markings.

USER MANUAL RN6027 IFM

Function and features

The encoder converts rotary movements into digital numerical values. Each revolution is given as a numerical value. These values allow angular movements to be measured and positions to be determined.

• Supply voltage and number of steps according to the type label.
  Max. permissible mechanical: 10,000min
• Max. permissible electrical: 6000min^-1 ( ≤ 10bit ); 3000min^-1 (11bit); 1500min^-1 (12bit)
• The outputs are protected against a short circuit between the outputs and UN or UP for < 1 min.

Installation

Disconnect power. The drive must not be started during installation.

The encoder shaft must not be hit; do not use a file or a similar tool on the shaft, it could destroy the unit.

Encoder and drive should be connected by means of a flexible coupling in order to avoid damage to the shaft and the bearing.

In the case of linear measurement with rack and pinion the angle flange should be mounted on a resilient base. In the case of linear measurement with a measuring wheel encoder and measuring wheel should be mounted on the end of a flexible arm.

Electrical connection

Disconnect power before connection /disconnection of the cable or plug and socket connection.

Output signals:

• 5V version: TTL output, 6mA
• 10-30V version: HTL output 20mA, short-circuit protection

Extension by means of a screened extension cable; max. length 20m (5V version), 100m (10-30V version); lay separately from sources of interference (min. spacing approx. 20cm). Connect the encoder housing, the connector / terminal box and the evaluation electronics via the screen.

Pulse diagram

high-impedance signal outputs
- release A = low:

tracks 3 to 10 to output (8... 10bit version)

tracks 7 to 12 to output (11 and 12bit TTL version)

• release B = low:

tracks 1 to 2 to output (8 ... 10bit version)

tracks 1 to 6 to output (11 and 12bit TTL version)

• release A and release B simultaneously low:

tracks 1 to 8 (1 to 9; 1 to 10; 1 to 11; 1 to 12) to output

Release

When unused or at 0V the data are permanently present at the output. At high level the tracks are blocked.

MSB (change the direction of rotation)

For encoders with 8, 9 and 10 bits the direction of rotation can be selected via the connection:

connection MSB = clockwise rotation

connection MSB = anticlockwise rotation

Holder of Certificate: ifm electronic gmbh

Friedrichstr. 1

45128 Essen

GERMANY

Production

20196

Facility(ies):

Certification Mark:

Product:

Electronic measuring equipment (encoders)

Model(s):

RAX, ROx, RPx, RBx, RCx, RUX, RVx, RSx, RMs, RNx "x" can be any character (up to 15 digits) and defines configurations, interface, resolution and length.

Parameters:

Rated Voltage: 5-30 Vdc

Rated Current: max. 370 mA

Remark:

When installing, requirements of mentioned Test Standards and Installation Guide has to be fulfilled. Supply shall fulfil requirements of limited energy circuit or Class 2 power.

Tested

UL 61010-1:2004

according to:

CAN/CSA-C22.2 No.61010-1:2004

The product was voluntarily tested according to the relevant safety requirements and mentioned properties. It can be marked with the certification mark shown above. The certification mark must not be altered in any way. This product certification system operated by TÜV SÜD America Inc. most closely resembles that described by ISO/IEC Guide 67, Conformity assessment - Fundamentals of product certification, System 3. See also notes overleaf.

Test report no.:

028-71370093-000

Date, 2010-08-18

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