ASM POSIROT PRAS User manual

POSIROT®/ PRAS......
Analog Magnetic
Angle Sensors
Instruction Manual
Explosion-proof Sensors
Please read carefully before installation and operation!

2 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Contents
Contents Safety instructions 3
Description 4
Marking 4
Mounting 5
Placement and alignment of the position magnet 5
Reference position 6
Electrical connection 7
Potential equalization 8
Connecting the sensor 8
Mechanical information 9
Torque for the mounting screws 9
Removal 9
Maintenance and service 11
Maintenance interval 11
Outline drawings 12
Specification of the outputs 22
Accessories 24
Position magnets 24
Mounting plates 27
Declaration of conformity 31

ASM GmbH MAN-PRAS-EX-E-13 3
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Do not use POSIROT®position sensors in safety critical applica-
tions where malfunction or total failure of the sensor may cause
danger for man or machine.
For safety related applications additional mechanisms (devices)
are necessary to maintain safety and to avoid damage.
Disregard of this advice releases the manufacturer from pro-
duct liability.
The sensor must be operated only within values specied in the
catalog or datasheet.
Connection to power supply must be performed in accordance
with safety instructions for electrical facilities and performed
only by qualied personnel.
The qualied personnel must have knowledge about the type of
ex-protection, regulation and ordinance of operating equipment
in ex-proof areas.
Check that the protection class of the sensor is suitable for the
operation conditions.
Safety
instructions

4 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Description The angle sensors PRAS of the POSIROT®product family perform touch-
less or shaft based angle measurement. A position magnet rotates in front
of the sensing area of the sensor head. The angular position is converted
into a standardized high resolution voltage or current output. Measuring
ranges 15° to 360° having rising or falling characteristic are available.
PRAS2EX-M12A II 3D Ex tD A22 IP65 T80°C X
PRAS2EX-M12R II 3D Ex tD A22 IP65 T80°C X
PRAS3EX-M12A II 3D Ex tD A22 IP65 T80°C X
PRAS3EX-M12R II 3D Ex tD A22 IP65 T80°C X
PRAS5EX-M12A II 3D Ex tD A22 IP65 T80°C X
PRAS5EX-M12R II 3D Ex tD A22 IP65 T80°C X
PRAS5EX-V-M12A II 3D Ex tD A22 IP65 T80°C X
PRAS5EX-V-M12R II 3D Ex tD A22 IP65 T80°C X
II = Equipment group II
3 = Hazard category 3
D = For combustible dust air mixture
tD = Protection by housing
A22 = Determination of the surface temperature according procedure A
for zone 22
T80°C = At an ambient temperature of 40 °C the surface temperature of
the housing can assume 80 °C max.
IP65 = Protection class IP65
X = Tested with low impact energy (PRAS2: 4 J; PRAS3: 4 J;
PRAS5: 4 J; PRAS5-V: 4 J)
X = Connect unused wires to GND
Ambient temperature: -20 °C to +40 °C
PRMAG2-Z-EX II 3D Ex c Tx X
PRMAG5-Z-EX II 3D Ex c Tx X
II = Equipment group II
3 = Hazard category 3
D = For combustible dust air mixture
c = Structural safety
Tx = No self-heating, max. temperature of the mounting surface 80 °C
X = Tested with low impact energy 4 J
Marking
Sensors
Marking
Magnets

ASM GmbH MAN-PRAS-EX-E-13 5
www.asm-sensor.com
Mounting
POSIROT®EX
Instruction Manual
Mounting
Measuring error by misalignment of the position magnet
Placement and alignment of the position magnet
For non-contact sensor models air gap and alignment of sensor and position
magnet has to be observed. The linearity will degrade in case of misalign-
ment. Also external magnetic elds and magnetized materials nearby can
effect the measuring result.
Sensor Position
magnet
Air gap
[mm]
Paral-
lelism
[°]
Error by axial misalignment
[°]
0,2
mm
0,5
mm
1 mm 2 mm 3 mm 4 mm
PRAS2EX PRMAG2Z-EX 0 ... 9 5 0.1 0.2 0.6 1.5 4.5 8.5
PRMAG5Z-EX 0 ... 8 5 0.1 0.2 0.6 1.5 4.5 8.5
PRAS5EX PRMAG2Z-EX 0 ... 5.5 5 0.1 0.2 0.6 1.5 4.5 8.5
PRMAG5Z-EX 0 ... 4.5 5 0.1 0.2 0.6 1.5 4.5 8.5

6 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
Mounting
(continuation)
Reference position
For ease of mounting there are reference markings at housing, position
magnet and near the shaft. If both markings match output will be on the
50% of full scale.
Clockwise increasing signal (CW), view to measuring area/shaft
Counterclockwise increasing signal (CCW), view to measuring area/shaft
Example for angle range 90°
Example for angle range 360°
POSIROT®EX
Instruction Manual
Range [°]
Marking
Range [°]
Marking
Marking
Marking

ASM GmbH MAN-PRAS-EX-E-13 7
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Mounting
(continuation)
Output Value range 50% value of output signal
U2 0.5 ... 10 V 5.25 V
U6 0.5 ... 4.5 V 2.5 V
I1 4 ... 20 mA 12 mA
Elektrical connection
Mounting / removal of the sensor under non-explosible conditions only.
Excitation voltage, excitation current
Wiring of the connector or the connecting cable, excitation voltage and
excitation current see chapter “Specication of the outputs“ at the end of
this manual.
Connect the cable screen to GND.
Caution:
• Assembled accessory cables may have different wire colors!
Take notice of the accessory pages of the catalog.
• Sensors with connector output have the given IP protection class
only with the correct plugged mating connector!
• Follow the signal wiring table!

8 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Potential equalization
• The local potential equalization has to be realized with a wire cross
section of 4 mm² minimum.
PRAS2Ex PRAS3Ex PRAS5Ex
Connecting the sensor
• Connecting and disconnecting of the M12 connector / socket only if
excitation voltage is OFF.
• M12 connector / socket has to be secured with a locking clip – see
picture below.
• Damaged locking clips have to be replaced.
Mounting of the locking clip
Mounting
(continuation)

ASM GmbH MAN-PRAS-EX-E-13 9
www.asm-sensor.com
Torque Mounting method Material Torque
[Nm]
M2,5 screws for mounting brackets (PRAS2,
PRAS3) – 0.8
M3 screws for mounting ange (PRAS3) – 1.2
M8 screws (PRAS5) – <20
POSIROT®EX
Instruction Manual
• Optional to the locking clip an ATEX approved M12 connector /
socket can be used, which can removed only with special tools.
• Cables must be xed rmly and protected against damage.
• Protect cables against UV radiation.
• Do not turn the M12 connector insert.
• A separate cord grip is recommended.
Mechanical information
• Do not mount the sensor in dust condition.
• Avoid dust deposit.
• Do not expose the sensor to shocks, the housings have been
tested with low impact energy (DIN EN 61241-0).
PRAS2EX-M12A Impact energy 4J
PRAS2EX-M12R Impact energy 4J
PRAS3EX-M12A Impact energy 4J
PRAS3EX-M12R Impact energy 4J
PRAS5EX-M12A Impact energy 4J
PRAS5EX-M12R Impact energy 4J
PRAS5EX-V-M12A Impact energy 4J
PRAS5EX-V-M12R Impact energy 4J
• Do not expose the sensor to shocks or any kind of impacts.
• Tightening torque – see following table.
Torque of the xing screws
Mechanical information for PRAS3EX
• Mount the sensor mechanical strainless
• Use shaft couplings resp. torque arms (e.g. exible ones) to avoid
misalignment errors.
• Use electrically conductive shafts/torque arms.
• Provide protection devices to avoid blocking of sensor by strange
parts falling into the working area.
• The max. number of revolutions is 1000 1/min (1000 RPM)
Removal
Remove sensor only in de-energized condition.
Mounting
(continuation)

10 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Mechanical
information for
PRMAG-EX
magnets
• Secure mounting screws against loosening, use threadlocker if
necessary.
• Mount sensor with corrosion-resistant screws.
• Mount sensor on a at and smooth metallic surface – this surface
must be connected to the local potential equalization.
• Protect magnets against damage, the housings have been tested
with low impact energy 4J (DIN EN 61241-0).
• Provide protection devices to avoid damage or blocking of sensor
and magnet by strange parts falling into the working area.
• Contact between sensor and magnet is not allowed, an adequate
minimum clearance must be observed.
• Dust concentrations between sensor and magnet are not allowed
– remove any dust deposit – appropriate maintenance intervals
must be scheduled.

ASM GmbH MAN-PRAS-EX-E-13 11
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Maintenance and
service
Maintenance
interval
• Any modication or repair of the sensor is not allowed.
• In case of any fault or error put the sensor out of service and
contact ASM.
Within maintenance activities, those parts of the sensor which are associated
with the risk of ignition must be checked mainly (e.g. the integrity of con-
nectors, cables, seals etc.). Maintenance intervals are application specic
and must be determined by the customer depending on the operating
conditions.
The following maintenance activities are recommended:
Check for
dust deposit
Integrity of
housing,
connector, cable
Mounting
elements
Visual check of
shaft sealing
PRAS2EX XXX
PRAS3EX XXXX
PRAS5EX XXX
PRAS5EX-V XXXX
PRMAG2Z-EX X X
PRMAG5Z-EX X X
Activity Dust deposit: Re-
move dust
Damaged parts:
Put sensor out of
service and replace
damaged parts
resp. send sensor
to ASM for repair
Loose mounting
parts: Screw tight
mounting parts
with recommended
torque, if applicable
use bolt adhesive
Damaged shaft
sealing:
Put sensor out of
service and send it
to ASM for repair
Maintenance work must not be made under combustible conditions.

33 [1.299]
36[1.417]
20[.787]
3[.118]
2,5[.098]
2,5 [.098]
36 [1.417]

42[1.654]
Markierung
Anschluß für
Potentialausgleich
Befestigung PRPT-BFS1
Positions-
magnet
Stecker M12
2,5 [.098]
2,5 [.098]
33 [1.299]
Markierung
Markierung
Markierung
Markierung
12 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS2EX
Connector version
M12 axial
Weight without cable 110 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Dimensions in mm [inch]
Connector M12
Marking
Position
magnet
Reference
position Marking
Marking
Mounting clamps
PRPT-BFS1
Terminal point for
potential equalization

33 [1.299]
36 [1.417]
3[.118]
2,5 [.098]
2,5 [.098]
25[.984]
42[1.654]
Stecker M12
Markierung
Anschluß für
Potentialausgleich
2,5[.098]
Befestigung PRPT-BFS1 Positions-
magnet
30 [1.181]
2,5 [.098]
Meßfläche
33 [1.299]
Markierung
Markierung
Markierung
Markierung
ASM GmbH MAN-PRAS-EX-E-13 13
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS2EX
Connector version
M12 radial
Weight without cable 140 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Marking
Position
magnet
Connector M12
Measuring area
Dimensions in mm [inch]
Reference
position
Marking
Marking
Terminal point for
potential equalization
Mounting clamps
PRPT-BFS1

33 [1.299]
10 -0,01
0+ .394 -0.0004
0+
[ ]
Ø
20[.787]
3[.118]
47[1.850]
33 [1.299]Ø
9 [.354]
2,5[.098]
2,5 [.098]
26


0,05
1.024

0.002
[]
4 x M3-5[.197] Abflachung /
flat
Befestigungsexzenter /
mounting clamps
16[.630]
Markierung /
marking
Potentialausgleich /
earthing
M12-Stecker /
M12-connector
36 [1.417]
42 [1.654]
Markierung
(Rückseite)
Abflachung
Markierung
(Rückseite)
Abflachung
14 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS3EX
M12 axial
Solid shaft
Weight without cable 290 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Marking
Dimensions in mm [inch]
Connector M12
Flat area
Reference
position Marking
(back side)
Terminal point for
potential equalization
Mounting clamps
PRPT-BFS1
Flat area

33 [1.299]
10 -0,01
0+ .394 -0.0004
0+
[ ]
Ø
20[.787]
3[.118]
52[2.047]
33 [1.299]Ø
9 [.354]
2,5[.098]
2,5 [.098]
26


0,05
1.024

0.002
[]
4 x M3-5[.197] Abflachung /
flat
Befestigungsexzenter /
mounting clamps
6[.236]
42[1.654]
M12-Stecker/
M12-connector
36 [1.417]
Markierung /
marking
Potentialausgleich /
earthing
Markierung
(Rückseite)
Abflachung
Markierung
(Rückseite)
Abflachung
ASM GmbH MAN-PRAS-EX-E-13 15
www.asm-sensor.com
Flat area
Marking
(back side)
POSIROT®EX
Instruction Manual
Reference
position
Outline drawing
PRAS3EX
M12 radial
Solid shaft
Dimensions in mm [inch]
Marking
Connector M12
Weight without cable 320 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Terminal point for
potential equalization
Mounting clamps PRPT-BFS1
Flat area


42 [1.654]
2,5[.098]
2,5[.098]
7[.276]
3[.118]
47[1.850]
33 [1.299]
33 [1.299]Ø
36 [1.417]
Potentialausgleich /
earthing
Befestigungselement /
mounting clamps
Markierung /
marking
Markierung /
marking
26

0,05
1.024
.002
[]
4x M3-5[.197]
6-0,012
0,012
+.236 -.0005
.0005+
[ ]
Ø
15[.591]
16[.630]
M12-Stecker /
M12-connector
Markierung
(Rückseite)
Markierung
(Rückseite)
Markierung
Markierung
16 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS3EX
M12 axial
Hollow shaft
Reference
position
Weight without cable 290 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Dimensions in mm [inch]
Marking
Marking
(back side)
Marking
Connector M12
Terminal point for
potential equalization
Mounting clamps
PRPT-BFS1
Marking


42[1.654]
Markierung /
marking
Potentialausgleich /
earthing
M12-Stecker /
M12-connector
33 [1.299]
36 [1.417]
33 [1.299]Ø
2,5[.098]
2,5 [.098]
7[.276]
3[.118]
52[2.047]
26


0,051.024

.002
[]
4 x M3-5[.197]
Befestigungselement /
mounting clamps
6-0
0,012
+.236 -0
.0005+
[ ]
Ø
15[.591]
6[.236]
Markierung /
marking
Markierung
(Rückseite)
Markierung
(Rückseite)
Markierung
Markierung
ASM GmbH MAN-PRAS-EX-E-13 17
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Reference
position
Outline drawing
PRAS3EX
M12 radial
Hollow shaft
Marking
Marking
(back side)
Dimensions in mm [inch]
Weight without cable 320 g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.
Marking
Connector M12
Terminal point for
potential equalization
Mounting clamps PRPT-BFS1
Marking

23[.906]
13[.512]
48

0,051.890

.002
[]
66

-0,1
0
+2.598-.004
0
+
[]
15 [.591]Ø
9 [.354]Ø
Markierung /
marking
Potentialausgleich /
earthing
Magnet /
magnet
Meßfläche /
measurement area
M12-Stecker /
M12-connector
14[.551]
Markierung
Markierung
(Vorderseite)
Markierung
Markierung
(Vorderseite)
18 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS5EX
M12 axial
Reference
position
Marking
Marking
(front side)
Weight without cable ... g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.

66
-0,1
0
+2.598-.004
0
+
[]
48

0,051.890

.002
[]
15 [.591]Ø
13[.512]
9 [.354]Ø 13,4 [.528]
10[.394]
23[.906]
Markierung /
marking
Potentialausgleich /
earthing
Magnet /
magnet
Markierung
Markierung
(Vorderseite)
Markierung
Markierung
(Vorderseite)
ASM GmbH MAN-PRAS-EX-E-13 19
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Reference
position
Outline drawing
PRAS5EX
M12 radial
Marking
Marking
(front side)
Weight without cable ... g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.

10-0,01
0+ .394 -.0004
0+
[ ]
9 [.354]
36f6 (-0,04
0,03
-)1.417 f6 (-.0016
.001 )
-
[ ]
60 [2.362]
9 [.354]Ø
10[.394]
20[.787]
10[.394]
3[.118]
3[.118]
38[1.496]
68,2[2.685]
48

0,051.890

.002
[]
M12-Stecker /
M12-connector
Potentialausgleich /
earthing
10[.394]
15 [.591]Ø
Markierung
Abflachung
Abflachung
Markierung
20 MAN-PRAS-EX-E-13 ASM GmbH
www.asm-sensor.com
POSIROT®EX
Instruction Manual
Outline drawing
PRAS5EX-V
M12 axial
Reference
position
Marking
Flat area
Weight without cable ... g approx.
Dimensions informative only.
For guaranteed dimensions consult factory.