Autonics EP58 Series Single-Turn Absolute Rotary Encoders Instruction Manual

: June 10, 2024
: Autonics

Table of Contents

Autonics EP58 Series Single-Turn Absolute Rotary Encoders
Product Information
Product Components
Usage Instructions
Safety Considerations
Cautions during Installation
Ordering Information
Product Components
Connections
Output Waveform
Specifications
Output Phase / Output Angle
Dimensions
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Autonics EP58 Series Single-Turn Absolute Rotary Encoders

Product Information

EP58 Series

The EP58 Series is a 58 mm Diameter Absolute Single-Turn Rotary Encoder that uses optical technology. It is suitable for use with machinery that may cause serious injury or substantial economic loss, such as nuclear power control, medical equipment, ships, vehicles, railways, aircraft, combustion apparatus, safety equipment, crime / disaster prevention devices, etc. The EP58 Series encoder should not be used in places where flammable/explosive / corrosive gas, high humidity, direct sunlight, radiant heat, vibration, impact or salinity may be present. It should be installed on a device panel and should not be connected, repaired or inspected while connected to a power source. The unit must be used within the rated specifications and should not be shorted. The encoder should not be used near equipment that generates strong magnetic force or high-frequency noise and strong alkaline, strong acidic exists.

Product Components

Shaft type: SC (Shaft clamping type), SS (Shaft synchro type), HB (Hollow Built-in type)
Resolution Number: Refer to resolution in ‘Output Phase / Output Angle’
Output code: 1 (BCD code), 2 (Binary code), 3 (Gray code)
Rotating direction: F (Increase output when the rotating direction is clockwise base on facing the shaft), R (Increase output when the rotating direction is counter-clockwise base on facing the shaft)
Control output: N (NPN open collector output), P (PNP open collector output)
Bolt Coupling Bracket
Product
Instruction manual

Usage Instructions

Install the EP58 Series encoder on a device panel and use it within the rated specifications. Failure to follow this instruction may result in fire or product damage.
Ensure that a fail-safe device is installed when using the unit with machinery that may cause serious injury or substantial economic loss. Failure to follow this instruction may result in personal injury, economic loss or fire.
Avoid using the encoder in places where flammable/explosive/corrosive gas, high humidity, direct sunlight, radiant heat, vibration, impact or salinity may be present. Failure to follow this instruction may result in an explosion or fire.
Do not connect, repair, or inspect the unit while connected to a power source. Failure to follow this instruction may result in fire.
Check connections before wiring. Failure to follow this instruction may result in fire.
Do not disassemble or modify the unit. Failure to follow this instruction may result in fire.
The EP58 Series encoder should not be used near equipment that generates strong magnetic force or high-frequency noise and strong alkaline, strong acidic exists. Failure to follow this instruction may result in product damage.

Thank you for choosing our Autonics product. Read and understand the instruction manual and manual thoroughly before using the product. For your safety, read and follow the below safety considerations before using. For your safety, read and follow the considerations written in the instruction manual, other manuals and Autonics website. Keep this instruction manual in a place where you can find easily. The specifications, dimensions, etc. are subject to change without notice for product improvement. Some models may be discontinued without notice. Follow the Autonics website for the latest information.

Safety Considerations

Observe all ‘Safety Considerations’ for safe and proper operation to avoid hazards.
symbol indicates caution due to special circumstances in which hazards may occur.

Warning Failure to follow instructions may result in serious injury or death.

Fail-safe device must be installed when using the unit with machinery that may cause serious injury or substantial economic loss. (e.g. nuclear power control, medical equipment, ships, vehicles, railways, aircraft, combustion apparatus, safety equipment, crime / disaster prevention devices, etc.)
Failure to follow this instruction may result in personal injury, economic loss or fire.
Do not use the unit in the place where flammable / explosive / corrosive gas, high humidity, direct sunlight, radiant heat, vibration, impact or salinity may be present. Failure to follow this instruction may result in explosion or fire.
Install on a device panel to use.
Failure to follow this instruction may result in fire.
Do not connect, repair, or inspect the unit while connected to a power
source. Failure to follow this instruction may result in fire.
Check ‘Connections’ before wiring.
Failure to follow this instruction may result in fire.
Do not disassemble or modify the unit.
Failure to follow this instruction may result in fire.

Caution Failure to follow instructions may result in injury or product damage.

Use the unit within the rated specifications.
Failure to follow this instruction may result in fire or product damage.
Do not short the load.
Failure to follow this instruction may result in fire.
Do not use the unit near a place where there is equipment that generates strong magnetic force or high-frequency noise and strong alkaline, strong acidic exists.
Failure to follow this instruction may result in product damage.

Cautions during Use

Follow instructions in ‘Cautions during Use’. Otherwise, It may cause unexpected accidents.
5 VDC , 12 – 24 VDC power supply should be insulated and limited voltage/current or Class 2, SELV power supply device.
For using the unit with the equipment which generates noise (switching regulator, inverter, servo motor, etc.), ground the shield wire to the F.G. terminal.
Ground the shield wire to the F.G. terminal.
When supplying power with SMPS, ground the F.G. terminal and connect the noise-canceling capacitor between the 0 V and F.G. terminals.
Wire as short as possible and keep away from high voltage lines or power lines, to prevent inductive noise.
Check the wire type and response frequency when extending wire because of distortion of waveform or residual voltage increment etc. by line resistance or capacity between lines.
This unit may be used in the following environments.
Indoors (in the environment condition rated in ‘Specifications’)
Altitude max. 2,000 m
Pollution degree 2
Installation category II

Cautions during Installation

Install the unit correctly with the usage environment, location, and designated specifications.
Do not load overweight on the shaft.
Do not put strong impact when insert a coupling into shaft. Failure to follow this instruction may result in product damage.
When fixing the product or coupling with a wrench, tighten under 0.15 N m.
If the coupling error (parallel misalignment, angular misalignment) between the shaft increases while installation, the life cycle of the coupling and the encoder can be shorten.
Do not apply tensile strength over 30 N to the cable.

Ordering Information

This is only for reference, the actual prodcut does not support all combinations.
For selecting the specified model, follow the Autonics website. Autonics-EP58
-Series-Single-Turn-Absolute-Rotary-Encoders-fig-1

Shaft type

SC: Shaft clamping type
SS: Shaft synchro type
HB: Hollow Built-in type

Shaft outer diameter / Shaft inner diameter

6: Ø 6 mm
8: Ø 8 mm
10: Ø 10 mm

Resolution

Number: Refer to resolution in ‘Output
Phase / Output Angle’

Output code

: BCD code
: Binary code
: Gray code

Rotating direction

F: Increase output when the rotating direction is clockwise base on facing the shaft
R: Increase output when the rotating direction is counter-clockwise base on facing the shaft

Control output

N: NPN open collector output
P: PNP open collector output

Power supply

5: 5 VDC ±5%
24: 12 – 24 VDC ±5%

Product Components

Shaft type| Shaft Clamping type| Shaft Synchro type| Hollow Built-in type
---|---|---|---
Product Components| Product, Instruction manual| Product (+ bracket),

Instruction manual

Bolt| × 10| × 8| × 4
Coupling| × 1| × 1| –
Bracket| × 1| × 1| –

Connections

Unused wires must be insulated.
The metal case and shield cable of encoders must be grounded (F.G.).
F.G. (Frame Ground) must be grounded separately.
Since an exclusive driver IC is used for the output circuits, be aware of short circuits when wiring each output wires.
N·C: not connected

BCD code

Color	Function	Refer
White	+V	****

power

Black| GND
Brown| 20|
Red| 21|
Orange| 22|
Yellow| 23|
Blue| 20 × 10|
Purple| 21 × 10|
Gray| 22 × 10|
White / Brown| 23 × 10|
White / Red| 20 × 102|
White / Orange| 21 × 102|
White / Yellow| 22 × 102|
White / Blue| 23 × 102|
White / Purple| 20 × 103|
Shield| F.G.| signal shield

Binary / Gray code

Color	Function	Refer
White	+V	****

power

Black| GND
Brown| 20|
Red| 21|
Orange| 22|
Yellow| 23|
Blue| 24|
Purple| 25|
Gray| 26|
White / Brown| 27|
White / Red| 28|
White / Orange| 29|
White / Yellow| N·C|
White / Blue| N·C|
White / Purple| N·C|
Shield| F.G.| signal shield

Inner Circuit

The output circuit is identical for each output bit.
Be aware of circuit break in case of overload or short beyond the specifications.

Autonics-EP58-Series-Single-Turn-Absolute-Rotary-Encoders-
fig-3

Output Waveform

Following waveform is based on the positive logic. (In case of negative logic, the waveform is opposite to corresponding waveform.)

BCD code output

Binary code output

Gray code output

Specifications

Model	EP58□-□-□□-N-□	EP58□-□-□□-P-□
Resolution 01)	≤ 1024 division
Output code	BCD / Binary / Gray code model
Control output	NPN open collector output	PNP open collector output
Inflow current	≤ 32 mA	–
Residual voltage	≤ 1 VDC	–
Outflow current	–	≤ 32 mA
Output voltage	–	≥ (power supply – 1.5) VDC
Response speed 02)	TON ≤ 800 nsec, TOFF ≤ 800 nsec
Max. response freq.	35 kHz
Max. allowable revolution 03)	3,000 rpm
Approval

Refer to resolution in ‘Output Phase / Output Angle’
Based on cable length: 2 m, I sink = 32 mA
Select resolution to satisfy Max. allowable revolution ≥ Max. response revolution

[max. response revolution (rpm) = max. response frequency resolution × 60 sec] Shaft type| Shaft clamping type| Shaft synchro type| Hollow Built-in type
---|---|---|---
Starting torque| ≤ 0.004 N m| ≤ 0.009 N m
Inertia moment| ≤ 15 g·cm2 (1.5 × 10-6 kg·m2)| ≤ 20 g·cm2 (2 × 10-6 kg·m2)
Allowable shaft load| Radial: ≤ 10 kgf, Thrust: ≤ 2.5 kgf| Radial: ≤ 2 kgf, Thrust: ≤ 1 kgf
Unit weight (packaged)| ≈ 435 g (≈ 545 g)| ≈ 415 g (≈ 525 g)| ≈ 410 g (≈ 520 g)
Power supply| 5 VDC ± 5% (ripple P-P: ≤ 5%) /

12 – 24 VDC ± 5% (ripple P-P: ≤ 5%) model

---|---
Current consumption| ≤ 100 mA (no load)
Insulation resistance| Between all terminals and case: ≥ 100 MΩ (500 VDC megger)
Dielectric strength| Between all terminals and case: 750 VAC 50 / 60 Hz for 1 minute
Vibration| 1 mm double amplitude at frequency 10 to 55 Hz (for 1 minute) in each

X, Y, Z direction for 2 hours

Shock| ≲ 50 G
Ambient temp.| -10 to 70 ℃, storage: -25 to 85 ℃ (no freezing or condensation)
Ambient humi.| 35 to 85%RH, storage: 35 to 90%RH (no freezing or condensation)
Protection rating| IP50 (IEC standard)
Connection| Axial cable type (cable gland)
Cable spec.| Ø 7 mm, 15-wire, 2 m, shield cable