Autonics EPM50S Series Catalog Page

EPM50S Series

Shaft Type Ø50mm Multi-turn Absolute Rotary Encoder

Features

● Total 23-bit resolution (8388608-division) of 10-bit
single-turn (1024-division) and 13-bit multi-turn (8192-revolution)

● Compact size of Ø50mm

● Parallel data/SSI data transmission type

● Easy zero adjustment using single-turn/multi-turn data
separated reset function

● Memorizing revolution data up to ±90° after blackout without
memory back up function

● Possible CW/CCW direction setting with direction function

● Maximizing users convenience with clear, over ow alarm (OVF) function

● Protection structure IP64 (IEC standard) (dust-proof, oil-proof)

● Provides Latch function (parallel output model only)

Applications

● Precision machine tool, Fabric machinery, Robot, Parking system

Please read “Safety Considerations”
in the instruction manual before using.

Ordering Information

EPM50S 8 10 13 B PN 24

Series

Ø50mm
Shaft type

Shaft diameter

Ø8mm

Single-turn Multi-turn Output code Control output Power supply Cable

10-bit
(1024

-division)

13-bit
(8192

-revolution)

Binary
code

PN: Parallel NPN open
collector output
S: SSI Line driver output

Specifications

Type
Model

Resolution

Rotation limit when power o󰀨

Single-turn 1024-division (10-bit)
Multi-turn 8192-revolution (13-bit)

※

Output code 24-bit, Binary code Binary code

Control output

Output

Output signal Single-turn data, multi-turn count, over ow alarm (OVF)
Output logic
Response time (rise, fall)

Input signal

Input level 0-1VDC
Input logic Low Active, Open or High for common use

Input

Input time

Electrical specication

SSI clock
input

Input level 5VDCᜡ ±5%

Input frequency 100kHz to 1MHz
Max. response frequency
Power supply 12-24VDCᜡ ±5% (ripple P-P: max. 5%)
Current consumption Max. 150mA (disconnection of the load) Max. 100mA (disconnection of the load)
Insulation resistance Over 100MΩ (at 500VDC megger between all terminals and case)
Dielectric strength 750VAC 50/60Hz for 1 min (between all terminals and case)
Connection Axial/Radial cable type (cable gland)

※

1: It calibrates the multi-turn counts by comparing single-turn data before/after power o󰘯 without counting multi-turn counts when power

is o󰘯. It shall be used on the condition that no overrated revolution occurred since proper multi-turn data may not be available if any
revolutions occurred over ±90° from the position when power is o󰘯.

※

2: OVF alarm is ON when multi-turn count is out of counting range (0 to 8191 revolutions).

※

3: Single-turn data will be reset as「0」when single-turn data reset is input.

※

4: Multi-turn count will be reset as「0 revolution」when multi-turn count reset is input.

Shaft Type Ø50mm Multi-turn Absolute Rotary Encoder

EPM50S8-1013-B-S-24- EPM50S8-1013-B-PN-24-

1

±90°

SSI (Synchronous Serial Interface) Line driver
[Low] - Sink current: max. 20mA,
Residual voltage: max. 0.5VDC
[High] - Sink current: max. -20mA,
Output voltage: min. 2.5VDC

-

-

Single-turn data reset

※

3

, Multi-turn count reset

-

ᜡ

ᜡ

Parallel NPN open collector output
Sink current: max. 32mA,
Residual voltage: max. 1VDC

Negative logic output
Max. 1

※

4

, Direction, Clear

Latch

ᜡ

Single-turn data reset

-

※

3

, Multi-turn count reset

※

4

, Direction, Clear: approx. over 100ms

Latch: approx. over 500

-

-

50kHz

Radial cable type

Axial cable type

12-24VDC±5%

※

2

cable: 2m, I sink = 32mA)

㎲ (

No mark: Axial cable type
S: Radial cable type

ᜡ

㎲

SENSORS

CONTROLLERS

MOTION DEVICES

SOFTWARE

(A)
Photoelectric
Sensors

(B)
Fiber Optic
Sensors

(C)
LiDAR

(D)
Door/Area
Sensors

(E)
Vision
Sensors

(F)
Proximity
Sensors

(G)
Pressure
Sensors

(H)
Rotary
Encoders

(I)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets

H-89

EPM50S Series

Specifications

Type
Model

Mechanical
specication

Vibration 1.5mm amplitude at frequency of 10 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours
Shock Approx. max. 50G

Environment

Protection structure Axial cable type: IP64 (IEC standard), Radial cable type: IP50 (IEC standard)

Cable

Accessory Bracket, coupling
Approval
Weight

※

5: In case of Parallel type model, Make sure that Max. response revolution should be lower than or equal to max. allowable revolution

※

6: The weight includes packaging. The weight in parenthesis is for unit only.

※

Environment resistance is rated at no freezing or condensation.

Starting torque Max. 70gf·cm (0.0069N·m)
Moment of inertia Max. 40g·cm² (4×10-6kg·m²)
Shaft loading Radial: max. 10kgf, Thrust: max. 2.5kgf
Max. allowable

revolution

Ambient temp. -10 to 70℃, storage: -25 to 85
Ambient humi. 35 to 85%RH, storage: 35 to 90%RH

※

6

when selecting the resolution.

[Max. response revolution (rpm)=

Resolution

Synchronous Serial Interface (SSI) Output Timing Diagram

Shaft Type Ø50mm Multi-turn Absolute Rotary Encoder

EPM50S8-1013-B-S-24- EPM50S8-1013-B-PN-24-

3,000rpm

※

5

℃

Ø6mm, 10-wire, 2m, Shield cable
(AWG28, core diameter: 0.08mm,
number of cores: 19, insulation out diameter: Ø0.8mm)

Approx. 409g (approx. 324g) Approx. 560g (approx. 475g)

Max. response frequency

× 60 sec]

Ø6mm, 17-wire×2, 2m, Shield cable
(AWG28, core diameter: 0.08mm,
number of cores: 17, insulation out diameter: Ø0.8mm)

SSI_CLOCK

SSI_DATA

t3T=1/ft1

n-1

n

MSB

t2

1 0

LSB

Clock Frequency f

T

Time lag t2

Monoop Time t3

100kHz to 1MHz
T: 1 to 10

㎲

0.5

t1 ＜ 5

㎲ ＜

t2 ＜ 0.3

㎲

15

t3 ＜ 30

㎲ ＜

㎲

㎲

Synchronous Serial Interface (SSI) Data Output

M12

OVF

OVF

Clock input bit Data output name Data output bit Clock input bit Data output name Data output bit

1 Over ow alarm bit 0-bit 15

2

3 11-bit 17 7-bit

4 10-bit 18 6-bit

5 9-bit 19 5-bit

6 8-bit 20 4-bit

7 7-bit 21 3-bit

8 6-bit 22 2-bit

9 5-bit 23 1-bit

10 4-bit 24 0-bit (LSB)

11 3-bit

12 2-bit

13 1-bit

14 0-bit (LSB)

M11 M10

Multi-turn count

M8 M6 M4 M2 M0 S8 S6 S4 S2M9 M7 M5 M3 M1 S9 S7 S5 S3 S1 S0

Multi-turn count Single-turn data

9-bit (MSB)

12-bit (MSB) 16 8-bit

Single-turn data

H-90