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POSIROT ®
PMIS4, PMIR7, PMIR7N
Incremental magnetic encoder rings
Magnetic rings for rotative applications with
POSIROT® position sensor PMIS4
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All metal housing (sensor head PMIS4)
Protection class IP67
Highest EMC protection
Large guiding distance of ±1 mm
Suitable for harsh environments
Up to 184,320 pulses/360°
For shaft diameters of 0.79, 1.06, 1.38 and 1.97 in.
Magnet rings with index mark
Order Code PMIR7/PMIR7N
(magnetic ring)
Model name
PMIR7
PMIR7N
Magnetic period
20 = .08 in. (2 mm)
Number of poles and inner diameter [in mm]
PMIR7: 50 - M - 27 PMIR7N: 50 - M - 20
64 - M - 35 64 - M - 20
90 - M - 50 90 - M - 20
Order Code PMIS4
(sensor head)
For specifications
see page 59
PMIR7(N)
PMIS4
KHZ
M
Model name
Magnetic period
20 = 2 mm
Scaling factor
See table page 65
Maximum pulse frequency (in kHz, standard 50 kHz)
50 / 20 / 10 (other frequencies on request, max. 480 kHz)
Output
HTL = HTL output with excitation 24 V DC, output 24 V
TTL = TTL output with excitation 5 V DC, output TTL/RS-422
TTL24V = TTL output with excitation 24 V DC, output TTL/10 mA
Signal Z / status signal
Z0 = A/B w/o signal Z
Z1 = A/B with signal Z
Z3 = A/B with signal Z and status signal, only for non-differential
(single-ended) outputs
Cable length (in m, standard 2 m (6.56 ft.))
Connection
S = Open cable end
Order example magnet ring: PMIR7 - 20 - 64 - M - 35
Order example sensor head: PMIS4 - 20 - 100 - 50KHZ - HTL - Z0 - 2M - S
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POSIROT ®
PMIR7, PMIR7N
Incremental magnetic encoder rings
Specification
Material
Elastomer bonded hard ferrite
Base material
PMIR7: stainless steel, PMIR7N: aluminum
Poles per revolution
50 / 64 / 90 poles/360°
Magnetic period
.08 in. (2 mm)
Temperature range
-40 ...+185°F
Linearity with sensor PMIS4
Approx. ± 0.1°
Standard magnetic wheels
Type
Poles
∅
Width
Signal periods/rotation
Inside diameter
PMIR7(N)-20-50-M-27(20)
50
1.25 in.
.39 in.
decade division (refer to the table below)
27H7 (20H7)
PMIR7(N)-20-64-M-35(20)
64
1.6 in.
.39 in.
binary division (refer to the table below)
35H7 (20H7)
PMIR7(N)-20-90-M-50(20)
90
2.26 in.
.39 in.
vernier (refer to the table below)
50H7 (20H7)
Scaling factor
Sensor
PMIS4-20- ...
PMIR7(N)-20-50-M-27(20)
Signal periods
R.p.m. )*
(at 480 kHz)
1
50
2
4
PMIR7(N)-20-64-M-35(20)
PMIR7(N)-20-90-M-50(20)
Signal periods
R.p.m. )*
(at 480 kHz)
Signal periods
R.p.m. )*
(at 480 kHz)
6000
64
6000
90
6000
100
6000
128
6000
180
6000
200
6000
256
6000
360
6000
8
400
6000
512
6000
720
6000
10
500
5760
640
4500
900
3200
16
800
6000
1024
6000
1440
6000
20
1000
5760
1280
4500
1800
3200
25
1250
6000
1600
6000
2250
5120
32
1600
6000
2048
6000
2880
6000
40
2000
5760
2560
4500
3600
3200
50
2500
6000
3200
6000
4500
5120
64
3200
6000
4096
5625
5760
4000
80
4000
5760
5120
4500
7200
3200
100
5000
4608
6400
3600
9000
2560
125
6250
3686
8000
2880
11 250
2048
128
6400
3600
8192
2813
11 520
2000
200
10 000
2304
12 800
1800
18 000
1280
250
12 500
1843
16 000
1440
22 500
1024
256
12 800
1800
16 384
1406
23 040
1000
400
20 000
1152
25 600
900
36 000
640
500
25 000
922
32 000
720
45 000
512
512
25 600
900
32 768
703
46 080
500
1024
51 200
450
65 536
352
92 160
250
2048
102 400
225
131 072
176
184 320
125
)* Maximum revolution per minute mechanically 6.000 R.p.m.
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POSIROT ®
PMIR7, PMIR7N
Dimensions
PMIR7-20-50-M-27
PMIR7N-20-50-M-20
2x DIN916-M4x5
4 [.157]
12
27 H7 (+- 0,021
) 1.063 H7 (+- .00083
)
0
0
]
E
[
Ø31,8 [1.252]
0°
E
10 [.394]
20 H7
10 [.394]
31,8 [1.252]
18 [.709]
PMIR7-20-64-M-35
4 [.157]
(+- 0,021
) [.787 H7 (+- .0008
)]
0
0
PMIR7N-20-64-M-20
2x DIN916-M4x5
Ø40,7 [1.602]
[
0°
12
35 H7 (+- 0,025
) 1.378 H7 (+- .00098
)
0
0
]
E
10 [.394]
10 [.394]
E
18 [.709]
[
]
20 H7 (+- 0,021
) .787 H7 (+- .0008
)
0
0
Ø40,7 [1.602]
PMIR7-20-90-M-50
PMIR7N-20-90-M-20
2x DIN916-M4x5
Ø57,3 [2.256]
0°
[
4 [.157]
12
50 H7 (+- 0,025
) 1.969 H7 (+- .00098
)
0
0
]
E
10 [.394]
10 [.394]
E
18 [.709]
[
20 H7 (+- 0,021
) .787 H7 (+- .0008
)
0
0
]
57,3 [2.256]
Dimensions in mm [inch]
Dimensions informative only.
For guaranteed dimensions consult factory.
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ASM Sensors, Inc.
POSIROT ®
PMIR7, PMIR7N
Incremental magnetic encoder rings
How to mount the
PMIR7 magnet rings
The PMIR7/PMIR7N magnet rings can be mounted in several ways on the customer’s
shaft resp. hub:
- press ring
- press fit
- bonding
- shaft nut
7
5
6
1
9
2
6
8
1
3
6
1
4
5
6
Montagerichtung









customer’s shaft
thread for 
press fit for 
groove for press ring 
press ring for  and 
magnet ring PMIR7
hub with groove for press ring
shaft nut for 
force fit for 
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POSIROT ®
PMIS4
Magnetic incremental encoder
Specifications
Output
Excitation voltage
Excitation current
Magnetic period of the sensor
Guided spacing between sensor and wheel xZ
Side tracking tolerance of the sensor
Linearity (sensor with magnetic wheel PMIR4)
Repeatability
Maximum pulse frequency fP
Output signals
Material of housing
Connection
Weight (w/o cable and connector)
Protection class (EN 60529)
Environmental
Shock
Vibration
EMC
Temperature
Incremental encoder output A/B with differential
push-pull output, TTL/24 V-, TTL/RS-422or HTL-compatible
10 ... 30 V DC or 5 V DC ±5 %
50 mA to 300 mA, depending on pulse frequency,
cable length and load
.08 in. (2 mm)
.02 in. (5 mm)
.004 in. ... .03 in.
.004 in. ... .08 in.
±.04 in. (±1 mm)
±.04 in. (±1 mm)
±0.1°
±0.1°
±1 digit
±1 digit
50, 20, 10 kHz (standard 50 kHz, max. 480 kHz)
A, A, B, B
signal Z, Z (optional)
status signal ERR (optional)
Zinc die casting
Cable 8 wire, dia. .2 in., open cable end.
15 pin D-Sub conn. at the cable end as option.
Max. length of the integrated sensor cable:
output TTL: 9.84 ft. (3 m); HTL/TTL24V: 65.6 ft. (20 m)
30 ±5 g (1.06 oz. ±.18 oz.)
IP67
EN60068-2-27:1993, 50 g 6 ms, 100 shocks
EN60068-2-6:1995, 20 g, 10-2000 Hz, 10 cycles
EN61326-1:2006
-40 ... +185 °F
The subsequent counting device must be able to process the specified maximum pulse frequency
of the sensor.
Output signals
Pulse frequency in
dependence on
the cable length
Saturation voltage
UH, UL = 0.2 V
UH, UL = 0.4 V
Cload < 10 nF
Iout = ±10 mA
Iout = ±30 mA
Short circuit current
ISL, ISH < 800 mA
ISL, ISH < 90 mA
(UH, UL = 0 V)
(UH, UL = 1.5 V)
Rise time
tr, tf < 200 ns
with cable length 1 m, 10 % … 90 %
Load/cable length
Load/pulse frequency fp
HTL single ended
UB = 24 V
TTL/RS422 differential
UB = 5 V *
(UH = UB - Uout)
TTL/24 V
UB = 24 V
Max. output current
50 mA
50 mA
10 mA
Rload min.
500 Ω
100 Ω
500 Ω
Cload max.
10 nF
10 nF
1 nF
656 ft. (200 m)
15 kHz
—
—
328 ft. (100 m)
25 kHz
100 kHz
—
164 ft. (50 m)
50 kHz
200 kHz
50 kHz
32.8 ft. (10 m)
100 kHz
300 kHz
100 kHz
* = consider the voltage loss of the cable; the excitation voltage 5 V ± 5% of the sensor must be
guaranteed.
Note: For longer distances (see specification above) you must use min. AWG21 wire for „Excitation+“
and „Excitation GND“ (see signal wiring next page), all signal wires must be min. AWG26!
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