1
Multiturn absolute encoder AVM78E
Release date: 2017-07-06 16:02 Date of issue: 2017-07-06 t157829_eng.xml
Germany: +49 621 776 4411Pepperl+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
0102
SYNCHRON SERIELLES INTERFACE
Model Number
AVM78E
Features
•Up to 30 Bit multiturn
• ATEX approval
• IECEx approval
• Flameproof enclosure
• Removable connection cap
• Galvanically isolated RS 422
interface
Description
This absolute rotary encoder returns a position
value corresponding to the shaft position via the SSI
interface.
In order to obtain the position data, the controller
sends a start sequence to the absolute rotary
encoder. The encoder then responds
synchronously to the pulses from the controller with
the position data.
The modular design enables you to order the
absolute rotary encoder so that it fulfills your
requirements. A listing of the part options can be
found in the ordering information.
You can select the counting direction via 2
functional inputs and set the zero position.
Technical data
General specifications
Detection type photoelectric sampling
Device type Multiturn absolute encoder
Functional safety related parameters
MTTF
d
30 a
Mission Time (T
M
) 20 a
L
10
7.7 E+9 at 3000 rpm
Diagnostic Coverage (DC) 0 %
Electrical specifications
Operating voltage U
B
10 ... 30 V DC
No-load supply current I
0
max. 90 mA
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) see input 1
Interface
Interface type SSI
Monoflop time 20 ± 10 µs
Resolution
Single turn up to 16 Bit
Multiturn up to 14 Bit
Overall resolution up to 30 Bit
Transfer rate 0.1 ... 2 MBit/s
Standard conformity RS 422
Input 1
Input type Selection of counting direction (cw/ccw)
Signal voltage
High 10 ... 30 V or open input
cw descending (clockwise rotation, code course
descending)
Low 0 ... 2 V
cw ascending (clockwise rotation, code course ascending)
Input current < 6 mA
Switch-on delay < 10 ms
Input 2
Input type zero-set (PRESET)
Signal voltage
High 10 ... 30 V
Low 0 ... 2 V
Input current < 6 mA
Signal duration ≥ 100 ms
Switch-on delay < 10 ms
Connection
Cable Ø 10.2 mm, Radox 9 x 0.5 mm
2
Terminal compartment see ordering information
Standard conformity
Degree of protection DIN EN 60529, IP66
Climatic testing DIN EN 60068-2-3, no moisture condensation
Emitted interference EN 61000-6-4:2007
Noise immunity EN 61000-6-2:2005
Shock resistance DIN EN 60068-2-27, 100 g, 3 ms
Vibration resistance DIN EN 60068-2-6, 10 g, 10 ... 2000 Hz
Ambient conditions
Operating temperature -40 ... 70 °C (-40 ... 158 °F)
Storage temperature -40 ... 85 °C (-40 ... 185 °F)
Mechanical specifications
Material
Combination 1 housing: anodized aluminum
flange: aluminum, blank
shaft: Stainless steel 1.4401 / AISI 316
Combination 2 (Inox) housing: stainless steel 1.4404 / AISI 316L
flange: stainless steel 1.4404 / AISI 316L
shaft: Stainless steel 1.4401 / AISI 316
Mass approx. 2600 g (combination 1)
approx. 3900 g (combination 2)
Rotational speed max. 3000 min
-1
Moment of inertia 180 gcm
2
Starting torque ≤ 4 Ncm
Shaft load
Axial 60 N
Radial 80 N
Data for application in connection with
hazardous areas
EU-Type Examination Certificate ITS 15 ATEX 18372X
IECEx ITS 15.0061X
Marking ¬ II 2G Ex d IIC T5 Gb
¬ II 2D Ex tb IIIC T100°C Db
Directive conformity
Directive 94/9/EC IEC 60079-0:2011 EN 60079-0:2012+A11:2013 IEC 60079-
1:2014 EN 60079-1:2014 IEC 60079-31:2013 EN 60079-
31:2014
Germany: +49 621 776 4411Pepperl+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
Multiturn absolute encoder AVM78E
2
Release date: 2017-07-06 16:02 Date of issue: 2017-07-06 t157829_eng.xml
Dimensions
Encoder length L
Version
Radial cable exit
Axial cable exit
Clamping flange
Servo flange
Clamping flange
Servo flange
Length L
118 mm
118 mm
134 mm
134 mm
ø48 ±0.1
15°
15°
ø69 ±0.1
L 20
16 5
4
ø10 g7
ø36 f7
ø78
54
78
15
95
117
-0.05
-0.10
3.5 Nm
±0.5 Nm
Clamping flange, cable exit radial
3 x M6,
6 deep
3 x 120°
3 x M3, 6 deep
3 x 120°
3 x M4, 6 deep
3 x 120°
ø 3, 8 deep
L
54
78
15
95
117
ø42 ±0.1
ø60 ±0.1
20
45
4
ø10 g7
ø50h7
ø78
-0.05
-0.10
3.5 Nm
±0.5 Nm
Servo flange, radial cable exit
3 x M6,
10 deep
3 x 120°
3 x M4,
9 deep
3 x 120°
ø48 ±0.1
15°
15
°
ø69 ±0.1
L 20
16 5
4
ø10 g7
ø36 f7
ø78
92
-0.05
-0.10
3.5 Nm ±0.5 Nm
22
Clamping flange, axial cable exit
3 x M6,
6 deep
3 x 120°
3 x M3,
6 deep
3 x 120°
3 x M4, 6 deep
3 x 120°
ø 3, 8 deep