Product data sheet
DFS20A-A2BAC002048
DFS2x
INCREMENTAL ENCODERS
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
A
B
C
D
E
F
Ordering information
Type
Part no.
DFS20A-A2BAC002048
1094818
Other models and accessories
www.sick.com/DFS2x
Illustration may differ
Detailed technical data
H
I
J
K
L
M
N
O
P
Q
R
S
T
Performance
Pulses per revolution
2,048
Measuring step
± 90° electric/pulses per revolution
Measuring step deviation
± 0.008° pulses 100 ... 10,000
Error limits
± 0.03°
Interfaces
Communication interface
Incremental
Communication Interface detail
HTL / Push pull
Number of signal channels
6-channel
Initialization time
40 ms 1)
Output frequency
820 kHz
Load current
30 mA
Power consumption
0.7 W (without load)
4.5 V… 5.5 V, TTL/RS-422
Load current 30 mA
4.5 V ... 5.5 V, Open Collector
Load current 30 mA
TTL/RS-422
Load current 30 mA
Power consumption 0.7 W (without load)
HTL/Push pull
Load current 30 mA
Power consumption 0.7 W (without load)
TTL/HTL
Load current 30 mA
1)
2
Valid positional data can be read once this time has elapsed.
ENCODERS | SICK
Product data sheet | 2021-10-08 21:37:24
Subject to change without notice
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
Power consumption 0.7 W (without load)
Open Collector
Load current 30 mA
Power consumption 0.7 W (without load)
1)
Valid positional data can be read once this time has elapsed.
Electrical data
Connection type
Male connector, M12, 8-pin, radial 1)
Supply voltage
8 ... 30 V
Reference signal, number
1
Reference signal, position
180°, Degree Marker Gated with BN2
Reverse polarity protection
✔
Short-circuit protection of the outputs
✔ 2)
MTTFd: mean time to dangerous failure
330 years (EN ISO 13849-1) 3)
1)
2)
3)
The Zero-Set function is not available with 6-pin MS connector or M12 connector options.
Short-circuit opposite to another channel or GND permissable for maximum 30 s.
This product is a standard product and does not constitute a safety component as defined in the Machinery Directive. Calculation based on nominal load of components, average ambient temperature 40°C, frequency of use 8760 h/a. All electronic failures are considered hazardous. For more information, see document no.
8015532.
Mechanical data
Mechanical design
Solid shaft, Square flange
Shaft diameter
3/8"
Shaft length
16 mm
Weight
+ 0.4 kg 1)
Shaft material
Stainless steel 1,4305
Flange material
Aluminum
Housing material
Aluminum
Start up torque
0.5 Ncm (+20 °C)
Operating torque
0.3 Ncm (+20 °C)
Permissible shaft loading radial/axial
80 N (radial)
40 N (axial)
Operating speed
≤ 9,000 min⁻¹
Moment of inertia of the rotor
15 gcm²
Bearing lifetime
3.6 x 109 revolutions
Angular acceleration
≤ 500,000 rad/s²
1)
Relates to encoders with male connector MS.
Ambient data
EMC
According to EN 61000-6-2 and EN 61000-6-3
Enclosure rating
IP65, shaft side (according to IEC 60529)
IP67, housing side (according to IEC 60529)
Permissible relative humidity
90 % (Condensation not permitted)
Operating temperature range
–30 °C ... +85 °C
Storage temperature range
–40 °C ... +100 °C, without package
2021-10-08 21:37:24 | Product data sheet
Subject
to change without notice
ENCODERS | SICK
3
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
A
B
C
D
E
F
H
I
J
K
L
M
N
O
P
Q
R
S
T
Resistance to shocks
100 g, 11 ms (according to EN 60068-2-27)
Resistance to vibration
30 g, 10 Hz ... 2,000 Hz (according to EN 60068-2-6)
Classifications
ECl@ss 5.0
27270501
ECl@ss 5.1.4
27270501
ECl@ss 6.0
27270590
ECl@ss 6.2
27270590
ECl@ss 7.0
27270501
ECl@ss 8.0
27270501
ECl@ss 8.1
27270501
ECl@ss 9.0
27270501
ECl@ss 10.0
27270501
ECl@ss 11.0
27270501
ETIM 5.0
EC001486
ETIM 6.0
EC001486
ETIM 7.0
EC001486
ETIM 8.0
EC001486
UNSPSC 16.0901
41112113
4
ENCODERS | SICK
Product data sheet | 2021-10-08 21:37:24
Subject to change without notice
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
Dimensional drawing (Dimensions in mm (inch))
DFS20 square flange mount, radial connector outlet M12 and MS, cable outlet
A
19.1 ±0.5
0.75 ±0.02
3.1
0.12
52.4
2.06
7.6
0.30
28.3
1.11
44
1.73
50.8
2.00
31.70 ±0.03
1.248 ±0.001
4 0.16 THRU
52.4
2.06
4X
44.5
1.75
44.5
1.75
9
0.35
63.9[2.52]
Type
Shaft diameter
A
DFS2x-x1xxxxxxxx
1/4"
DFS2x-x2xxxxxxxx
DFS2x-xCxxxxxxxx
3/8"
DFS2x-xFxxxxxxxx
1/2"
DFS2x-x3xxxxxxxx
6 mm
DFS2x-x4xxxxxxxx
10 mm
2021-10-08 21:37:24 | Product data sheet
Subject
to change without notice
50
1.97
18
0.71
49.7
1.96
28.3
1.11
38.5
1.52
ENCODERS | SICK
5
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
A
B
C
D
E
F
H
I
J
K
L
M
N
O
P
Q
R
S
T
PIN assignment
View of M12 male device connector on encoder
M12, 8-pin
MS, 10-pin
MS, 7-pin
MS, 6-pin
Cable, 9-wire
Signal
Description
1
H
-
-
Brown
¯A
Signal wire
2
A
A
E
White
A
Signal wire
3
I
-
-
Black
¯B
Signal wire
4
B
B
D
Pink
B
Signal wire
5
J
-
-
Yellow
¯Z
Signal wire
6
C
C
C
Purple
Z
Signal wire
7
F
F
A
Blue
GND
GND
8
D
D
B
Red
Us
Supply voltage
-
E
E
-
Orange
0-SET
Input signal
-
G
G
F
-
Housing
Electrically connected to the
housing potential
-
-
-
-
Drain wire
Bare wire parallel to the
braided screen
-
-
-
-
Screen
Screen connected to housing
on encoder side
Screen
Maximum revolution range
Maximum revolution range
65536
61440
57344
53248
49152
45056
40960
36864
32768
28672
24576
20480
16384
12288
8192
4096
6
ENCODERS | SICK
Product data sheet | 2021-10-08 21:37:24
Subject to change without notice
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
Signal outputs
Signal Outputs with Counter Clock-wise Counting Direction Option Selected (B leads A for clock-wise rotation). Complement signals
AN, BN and ZN are not shown.
Cw with view on the encoder shaft in direction "A", compare dimensional drawing.
Signal Outputs with Clock-wise Counting Direction Option Selected (A leads B for clock-wise rotation). Complement signals AN, BN
and ZN are not shown.
Cw with view on the encoder shaft in direction "A", compare dimensional drawing.
2021-10-08 21:37:24 | Product data sheet
Subject
to change without notice
ENCODERS | SICK
7
DFS20A-A2BAC002048 | DFS2x
INCREMENTAL ENCODERS
A
B
C
D
E
F
H
I
J
K
L
M
N
O
P
Q
R
S
T
Recommended accessories
Other models and accessories
www.sick.com/DFS2x
Brief description
Type
Part no.
Head A: female connector, M12, 8-pin, straight
Head B: Flying leads
Cable: Incremental, SSI, PUR, halogen-free, shielded, 2 m
DOL-1208-G02MAC1
6032866
Head A: female connector, M12, 8-pin, straight
Head B: Flying leads
Cable: Incremental, SSI, PUR, halogen-free, shielded, 5 m
DOL-1208-G05MAC1
6032867
Head A: female connector, M12, 8-pin, straight
Head B: Flying leads
Cable: Incremental, SSI, PUR, halogen-free, shielded, 10 m
DOL-1208-G10MAC1
6032868
Head A: female connector, M12, 8-pin, straight
Head B: Flying leads
Cable: Incremental, SSI, PUR, halogen-free, shielded, 20 m
DOL-1208-G20MAC1
6032869
DOS-1208-GA01
6045001
Plug connectors and cables
Head A: female connector, M12, 8-pin, straight, A-coded
Head B: Cable: Incremental, SSI, shielded
8
ENCODERS | SICK
Product data sheet | 2021-10-08 21:37:24
Subject to change without notice
Online data sheet
SICK at a glance
SICK is one of the leading manufacturers of intelligent sensors and sensor solutions for industrial applications. A unique range of products and services creates the perfect basis for controlling processes securely
and efficiently, protecting individuals from accidents and preventing damage to the environment.
We have extensive experience in a wide range of industries and understand their processes and requirements. With intelligent sensors, we can deliver exactly what our customers need. In application centers in
Europe, Asia and North America, system solutions are tested and optimized in accordance with customer
specifications. All this makes us a reliable supplier and development partner.
Comprehensive services complete our offering: SICK LifeTime Services provide support throughout the machine life cycle and ensure safety and productivity.
For us, that is “Sensor Intelligence.”
Worldwide presence:
Contacts and other locations – www.sick.com
SICK AG | Waldkirch | Germany | www.sick.com