Series AI25 BiSS Interface
• Up to 17 Bit single-turn resolution
• 4096 revolutions of multi-turn resolution
• Short installation depth
• Safety through self-diagnostics
• Solid shaft and hollow shaft versions
• -40
°
C to +100°C Operating temperature
Encoders
Dynapar™ brand
APPLICATION/INDUSTRY
The Dynapar brand ACURO Absolute Encoder
offers a modern full-feature design equipped
with BiSS interface.
DESCRIPTION
The
Acuro AI25
multi-turn versions. Its multi-turn design is based
on a reliable high-speed gear with optical
scanning and the latest generation of OptoASIC
technology.
Mechanical concept is based on a double ball
bearing design, and is available as a solid-shaft or
hollow-shaft version in common shaft diameters.
BiSS is a new, fully-digital and bi-directional
sensor interface. It defines communication
between one master and several slaves (sensors)
in industrial control systems. BiSS manifests a
new standard in technology and is available
license-free. Due to its high performance, it
constitutes an efficient alternative to the standard
combination of data interface and analog sine/
cosine incremental output.
BiSS needs only 6 wires and does not require any
hardware for analog signals - and therefore, helps
to reduce system costs.
Self-configuration allows "plug+play" and keeps
the system in an operable condition even after a
power failure.
and support, please visit www.biss-ic.de
is available in a single-turn or
For detailed information on BiSS
FEATURES AND BENEFITS
• Compact design to save valuable space
• Low power consumption
• Fast delivery of any model variant
• Additional field-bus and point-to-point
interfaces available
Code 1: Model Code 2: Bits Code 3 :Mounting Code 4: Shaft Size Code 5: Protocol Code 6: Electrical Code 7: Connector
SPECIFICATIONS
STANDARD OPERATING CHARACTERISTICS
Single-turn Resolution: 10, 12, 13, 14, 17 Bit
Multi-turn Resolution: 12 bit (only available
with 12, 13, 14 or 17 bit ST resolution)
Linearity: +/- 1/2 LSB
Absolute Accuracy: ± 0.01° mechanical (36 arc-sec.)
Repeatability: ± 0.002° mechanical (7.2 arc-sec.)
Code format: Binary, Gray, Gray Excess, parameteriza-
tion through
Parameterization: Resolution code type, sense of
rotation, warning, alarm
ELECTRICAL
Connection: Cable, M23 - 12 pole Conin connector,
M12 - 8-pole connector
Supply voltage: 5 VDC -5%/+10% or 10-30 VDC
Intrinsic current consumption: 50 mA (ST),
100 mA (MT) not including output current
Output current: 60 mA per bit, short circuit protected
Frequency response: 500 kHz
Maximum cable length: 400 m
Control Inputs: Direction
Alarm output: Warning and Alarm bits
Status LED: Green = OK, Red = Alarm (IP64 only)
Preset Switch: Sets encoder to zero output at present
mechanical position (IP64 only)
BiSS Benifits
AcuroSoft
• All digital interface eliminates the costs of
interpolation electronics
• Offers transmission reliability through a
4-bit cyclic redundancy check (CRC)
• Represents the only fully digital, open
motor feedback interface for real-time
applications
MECHANICAL
Shaft diameter:
Shaft: 6 mm (Servo Mount), 10 mm (Clamping Mount),
3/8" (Square Flange Mount)
Hubshaft: 10mm, 12 mm, 3/8", 1/2"
Maximum shaft load:
6 mm shaft: 13 lb axial, 24 lb radial
10 mm shaft: 24 lb axial, 35 lb radial
Maximum shaft speed: 10,000 RPM (continuous),
12,000 RPM (peak)
Starting torque: < 1.4 in-oz
Weight (approx.): 350 g ST, 400 g MT
Shaft tolerance (hubshaft only): +/- 1.5 mm axial, +/-
0.2 mm radial
Flange configurations: Square, Clamp, Servo, Hubshaft
with flexible tether
Bearing life:
10
1 x 10
revolutions at 35% full rated shaft load
9
1 x 10
revolutions at 75% full rated shaft load
8
1 x 10
revolutions at 100% full rated shaft load
ENVIRONMENTAL
Operating Temperature: -40 to 100° C
Storage Temperature: -40 to 100° C
Enclosure Rating: IP64 or IP67
Shock: 1,000 m/s
Vibration: 100 m/s
2
(6 ms)
2
(10 to 2,000 Hz)
AI25
A
C
U
R
O
10
4.
A
AI25
B
Size25
S
Acuro
Absolute
O
Encoder
L
U
T
E
Single-Turn
0010 10 Bit
0012 12 Bit
0013 13 Bit
0014 14 Bit
0017 17 Bit
Multi-Turn
1212 12 Bit Multi-
Turn, 12 Bit
Single-Turn
1213 12 Bit Multi-
Turn, 13 Bit
Single-Turn
1214 12 Bit Multi-
Turn, 14 Bit
Single-Turn
1217 12 Bit Multi-
Turn, 17 Bit
Single-Turn
Available when
Code 4 is 0 or A
0 Servo*
Available when
Code 4 is 2 or C
1 Clamping*
Available when
Code 4 is 1 or B
2 Square
flange**
Available when
Code 4 is 3, 4,
5 or 6
3 Hubshaft
w/tether†
* 58mm Dia.
** 2.5" Square
† 63mm BC
w/o shaft seal (IP64)
0 6 mm
1 3/8"
2 10 mm
3 3/8" Hub Shaft
4 12 mm Hubshaft
5 1/2" Hubshaft
6 10 mm Hub Shaft
w/ shaft seal (IP67)
A 6 mm
B 3/8"
C 10 mm
A BiSS
0 5 VDC
2 10-30 VDC
0 1.5m axial cable
1 1.5m radial cable
2 M23 Conin
12 pin axial CW
3 M23 Conin
12 pin radial CW
C M12 , 8-pole
connector axial
D M12 , 8-pole
connector radial
M4x5
0
Servo
Ø31.75mm
1.25in
19.5mm ±0.3
0.77in ±0.01
Ø42 ±0.1mm
1.65±0.004in
3/8in Dia. Shaft
10mm
0.39in
Mounting
Surface
Encoders
Series AI25 BiSS Interface
Code 3: Mounting
Ø48 ±0.1mm
Ø1.89 ±0.004in
45°
20°
4mm
0.16in
3mm
0.12in
Mounting
Surface
3mm
0.12in
10mm
58mm
2.28in
50mm
1.97in
0.39in
6mm
1
20
°
1
M4x5
12
0
°
M3x5
120
°
Clamping
63.5mm
2.5in
52.4mm
2.06in
Note: two M3 set screws in
colar around hub shaft
(will not mar shaft)
7mm
0.28in
52.4mm
2.06in
Ø5.6mm
0.22in
63.5mm
2.5in
10mm
Diameter
3mm
0.12in
10mm
0.39in
19.27mm
0.76in
9mm
0.35in
15mm
0.59in
Ø36mm
Ø1.42in
Radial Connector
Area (if used). See
Connection Diag.
Mounting
Surface
2
Square Flange
Ø2.24in
2.1mm
0.08in
13mm
0.51in
R
Location of
Status LED
and Preset Switch
on models with
IP64 sealing
15mm
0.59in
Ø8.5mm
Cables shown in
Axial and Radial
Placement
Length (L)
Mounting
Surface
0, 1
2 1.5M Cable
Ø57mm
Length (L) Mounting Surface to Rear
Mount (Code 3) Single-Turn Multi-Turn
(0) Servo 46.5/1.83 46.5/1.83
(1) Clamping 45.5/1.79 45.5/1.79
(2) Square Flng 45.5/1.79 45.5/1.79
(3) Hubshaft 53.4/2.1 53.4/2.1
Ø0.33in
14.8mm
0.58in
Hubshaft w/Tether
Code 7: Connector
2.1mm
0.08in
Location of
Status LED
and Preset Switch
on models with
IP64 sealing
23mm
0.91in
17.5mm
0.69in
9.0mm
0.35in
Mounting
Surface
Length (L)
Ø57mm
2.24in
2, 3
Conin 12 Pin Connector
Length (L) Mounting Surface to Rear
Mount (Code 3) Single-Turn Multi-Turn
(0) Servo 46.5/1.83 46.5/1.83
(1) Clamping 45.5/1.79 45.5/1.79
(2) Square Flng 45.5/1.79 45.5/1.79
(3) Hubshaft 53.4/2.1 53.4/2.1
3
Connectors
shown in Axial
and Radial
Placement
Hubshaft Shaft Engagement
HubShaft Min. Shaft Max. Shaft
Diameter Length Length
10mm, 3/8" 15mm (0.59") 20mm (0.79")
12mm, 1/2" 18mm (0.71") 20mm (0.79")
Length (L)
Location of
Status LED
and Preset Switc
on models with
IP64 sealing
Ø57mm
Ø2.24in
Mounting
Surface
17.5mm
0.69in
19.9mm
0.78in
C, D
M12 , 8-pole Connector
Length (L) Mounting Surface to Rear
Mount (Code 3) Single-Turn Multi-Turn
(0) Servo 46.5/1.83 46.5/1.83
(1) Clamping 45.5/1.79 45.5/1.79
(2) Square Flng 45.5/1.79 45.5/1.79
(3) Hubshaft 53.4/2.1 53.4/2.1
9.0mm
0.35in
Connectors
shown in Axial
and Radial
Placement
A
A
C
B
U
S
R
O
O
L
U
T
E
4.
11