1

Multiturn absolute encoder

ASM58-K

Germany: +49 621 776 4411

Pepperl+Fuchs Group

Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.

USA: +1 330 486 0001

Singapore: +65 6779 9091

www.pepperl-fuchs.com

fa-info@us.pepperl-fuchs.com

fa-info@sg.pepperl-fuchs.com

fa-info@de.pepperl-fuchs.com

SYNCHRON SERIELLES INTERFACE

Model Number

ASM58-K

Features

• Industrial standard

housing Ø58 mm

• 30 Bit multiturn

• Data transfer up to 2 MBaud

• Optically isolated RS 422 interface

• Recessed hollow shaft

• Zero-set function electrically and

by preset key

Description

This multiturn absolute encoder with modern fast

technology transmits a position value correspon-

ding to the shaft setting via the SSI interface (Syn-

chronous Serial Interface). The maximum

resolution of the ASM58-K is maximum

65536 steps per revolution at 16384 revolutions.

The devices of the ASM58-K series are equipped

with a microcontroller.

The control module sends a clock bundle to the ab-

solute encoder to obtain the position data. The ro-

tary encoder then sends the position data

synchronous to the cycles of the control module.

It is possible to select the following items with func-

tion inputs

•

the counting direction and

•

the zero-set function (preset value)

Another feature of this absolute encoder is the built

in preset key at the rear housing side. By means of

this, the position value can be locally set to zero.

For status and diagnosis indication furthermore it is

equipped with 2 LEDs.

The absolute encoder is mounted directly onto the

application shaft, without any coupling. Rotation of

the absolute encoder is prevented by a torque rest.

The electrical connection is made by a 12-pin

round plug connector. A version with a 1 m cable

connector is also available.

Technical data

General specifications

Detection type

photoelectric sampling

Device type

Multiturn absolute encoder

Functional safety related parameters

150 a

20 a

1.9 E+11 at 6000 rpm and 20/40 N axial/radial shaft load

Diagnostic Coverage (DC)

0 %

Indicators/operating means

LED green

supply voltage/preset key pressed

LED red

internal diagnostic test failed

Electrical specifications

4.5 ... 30 V DC

≤ 1 W

< 250 ms

Linearity

± 2 LSB at 16 Bit, ± 1 LSB at 13 Bit, ± 0,5 LSB at 12 Bit

Output code

Gray code, binary code

Code course (counting direction)

cw descending (clockwise rotation, code course

descending)

Interface

Interface type

SSI

Monoflop time

20 ± 10

µs

Resolution

Single turn

up to 16 Bit

Multiturn

14 Bit

Overall resolution

up to 30 Bit

Transfer rate

0.1 ... 2 MBit/s

Voltage drop

Standard conformity

RS 422

Input 1

Input type

Selection of counting direction (cw/ccw)

Signal voltage

High

4.5 ... 30 V or open input (cw ascending)

Low

0 ... 1 V (cw descending)

Input current

< 6 mA

Switch-on delay

< 10 ms

Input 2

Input type

zero-set (PRESET 1)

Signal voltage

High

4.5 ... 30 V

Low

0 ... 1 V or open input

Input current

< 6 mA

Signal duration

≥ 100 ms

Switch-on delay

< 10 ms after falling input flank

Connection

Connector

type 9416 (M23), 12-pin, type 9416L (M23), 12-pin

Cable

Standard conformity

Degree of protection

DIN EN 60529, IP65 (without shaft seal) ; DIN EN 60529,

IP66/IP67 (with shaft seal)

Climatic testing

DIN EN 60068-2-3, no moisture condensation

Emitted interference

DIN EN 61000-6-4

Noise immunity

DIN EN 61000-6-2

Shock resistance

DIN EN 60068-2-27, 100 g, 6 ms

Vibration resistance

DIN EN 60068-2-6, 20 g, 10 ... 2000 Hz

Ambient conditions

Operating temperature

-40 ... 85 °C (-40 ... 185 °F)

Storage temperature

-40 ... 85 °C (-40 ... 185 °F)

Mechanical specifications

Material

Combination 1

housing: powder coated aluminum

flange: aluminum

shaft: stainless steel

Combination 2 (Inox)

housing: stainless steel

flange: stainless steel

shaft: stainless steel

Mass

approx. 460 g (combination 1)

approx. 800 g (combination 2)

Rotational speed

Moment of inertia

Starting torque

< 3 Ncm (version without shaft seal)

Shaft load

Angle offset

± 0.9 °

Axial offset

static: ± 0.3 mm, dynamic: ± 0.1 mm

Radial offset

static: ± 0.5 mm, dynamic: ± 0.2 mm

Approvals and certificates

UL approval

cULus Listed, General Purpose, Class 2 Power Source