Encoders without bearings - absolute
Absolute encoder, 1 or 2 sensing head
Magnetic sensing, hollow shaft ø30 mm
Singleturn 13...16 bit, additional incremental signals 1024...8192
MHAD 50 - HDmag
Features
–– Absolute encoder with magnetic sensing and without
bearings
–– Absolute resolution max. 16 bit singleturn
–– Additional incremental signals
–– Robust and wearless
–– Protection IP 67
–– Large tolerances: axial ±1 mm, radial max. 1 mm
–– Very compact dimensions
–– Simple mounting, easy adaptation
–– LED functional display
Technical data - electrical ratings (CANopen)
Voltage supply
4.5...30 VDC
Voltage supply
4.5...30 VDC
Consumption w/o load
≤50 mA (24 VDC)
Consumption w/o load
≤50 mA (24 VDC)
Interface
SSI
Interface
CANopen®
Function
Singleturn
Function
Singleturn
Steps per turn
≤65536 / 16 bit
Steps per turn
≤65536 / 16 bit
Sensing method
Magnetic
Sensing method
Magnetic
Absolute accuracy
±0.3 ° (-40...+85 °C)
±0.25 ° (+20 °C)
Absolute accuracy
±0.3 ° (-40...+85 °C)
±0.25 ° (+20 °C)
Repeatability
0.3 °
Repeatability
0.3 °
Code
Gray or binary
Code seque./sense of rot. Positiv at CW
Code seque./sense of rot. Positiv at CW
Additional output signals
Square-wave univ. HTL/RS422
Inputs
SSI clock
Zero setting input
Counting direction
Output stages
CAN-Bus, LV (3.3 V) compatible
ISO11898
Additional output signals
Square-wave univ. HTL/RS422
Device profile
Output stages
SSI data: Linedriver RS422
Interference immunity
DIN EN 61000-6-2
CANopen / CIA
DS-301 V4.02 (Komm.)
DS-406 V3.0 (encoder profile)
DSP 305 V1.0 (LSS)
Emitted interference
DIN EN 61000-6-4
Interference immunity
DIN EN 61000-6-2
Emitted interference
DIN EN 61000-6-4
1
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7/3/2014
Technical data - electrical ratings (SSI)
Subject to modification in technic and design. Errors and omissions excepted.
MHAD 50 with cable
Encoders without bearings - absolute
Absolute encoder, 1 or 2 sensing head
Magnetic sensing, hollow shaft ø30 mm
Singleturn 13...16 bit, additional incremental signals 1024...8192
MHAD 50 - HDmag
Technical data - electrical ratings (square-wave)
Technical data - mechanical design
Voltage supply
(Signals)
4.75...30 VDC (5 VDC ±5 % =
RS422, 10...30 VDC = HTL)
Axial tolerance
±1 mm (wheel/head)
Consumption w/o load
≤50 mA (24 VDC)
Radial tolerance
0.1...1 mm (wheel/head)
Pulses per revolution
1024...8192
Shaft type
ø30 mm (through hollow shaft)
Sensing method
Magnetic
Protection DIN EN 60529
IP 67
Output frequency
≤300 kHz
Operating temperature
-40...+85 °C
Output signals
A+, A-, B+, B-
Operating speed
≤6000 rpm
Interference immunity
DIN EN 61000-6-2
Resistance
Emitted interference
DIN EN 61000-6-4
DIN EN 60068-2-6
Vibration 30 g, 61,6-2000 Hz
DIN EN 60068-2-27
Shock 500 g, 6 ms
Connection
Connector M12
Cable 1 m
Weight approx.
300 g
Part number
MHAD 50
C5
G
030
N
0
Connection
N Connector M12, 5-pin, CANopen without
incremental
Q Connector M12, 8-pin, CANopen with incremental
or SSI
U Connector M12, 12-pin, SSI with incremental
5 Cable, 1 m
Resolution Singleturn (bit)
13, 14, 15, 16
Code
B Binary code
G Gray code
Interface
C CANopen®
S SSI
Mounting / magnetic rotor
G Magnetic rotor screwed, axial
Sensing
1 1 sensing head
2 2 sensing heads (redundant)
Pulse number
1024
2048
4096
8192
Without additional incremental signals - pulse number 0000
2
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7/3/2014
Voltage supply / incremental signals
U 4.75-30 VDC / square (5 VDC ±5 % = RS422/10-30 VDC = HTL)
Z Without additional incremental signals
Subject to modification in technic and design. Errors and omissions excepted.
Pulse number - see table
Encoders without bearings - absolute
Absolute encoder, 1 or 2 sensing head
Magnetic sensing, hollow shaft ø30 mm
Singleturn 13...16 bit, additional incremental signals 1024...8192
MHAD 50 - HDmag
Terminal assignment
CANopen without incremental
with connector M12, 5-pin or cable
Description
Connec. Core color Signals
Description
Pin 1
–
n.c.
–
Pin 1
white
0V
Voltage supply
Pin 2
brown
+Vs
Voltage supply
Pin 2
brown
+Vs
Voltage supply
Pin 3
white
CAN_GND/0 V CAN Ground/volt. sup.
Pin 3
green
Clock+
Clock signal
Pin 4
green
CAN_H
Bus (dominant HIGH)
Pin 4
yellow
Clock-
Clock signal
Pin 5
yellow
CAN_L
Bus (dominant LOW)
Pin 5
grey
Data+
Data signal
grey
CAN_GND
CAN Ground
Pin 6
pink
Data-
Data signal
pink
n.c.
–
Pin 7
blue
Zero
Zero setting
blue
n.c.
–
Pin 8
red
DIR
Rotating direction
red
n.c.
–
Screen: connected to housing
Cable: PUR 4 x 2 x 0.14 mm2, 1 m / ø6 mm
Bending rad.: R ≥49 mm
SSI with incremental
with connector M12, 12-pin or cable
CANopen with incremental
with connector M12, 8-pin or cable
Connec. Core color Signals
Description
Connec. Core color Signals
Description
Pin 1
brown
+Vs
Voltage supply
Pin 1
white
CAN_GND/0 V CAN Ground/volt. sup.
Pin 2
blue
Zero
Zero setting
Pin 2
brown
+Vs
Voltage supply
Pin 3
white
0V
Voltage supply
Pin 3
green
CAN_H
Bus (dominant HIGH)
Pin 4
green
Clock+
Clock signal
Pin 4
yellow
CAN_L
Bus (dominant LOW)
Pin 5
pink
Data-
Data signal
Pin 5
grey
CHA
Incremental
Pin 6
yellow
Clock-
Clock signal
Pin 6
pink
CHA inv.
Incremental
Pin 7
black
CHA
Incremental
Pin 7
blue
CHB
Incremental
Pin 8
grey
Data+
Data signal
Pin 8
red
CHB inv.
Incremental
Pin 9
red
DIR
Rotating direction
Screen: connected to housing
Cable: PUR 4 x 2 x 0.14 mm2, 1 m / ø6 mm
Bending rad.: R ≥49 mm
Pin 10
violet
CHA inv.
Incremental
Pin 11
grey/pink
CHB
Incremental
Pin 12
red/blue
CHB inv.
Incremental
Please use screened cables and cores twisted in pairs
(Data+/Data-, CAN_H/CAN_L, CHA/CHA inv., CHB/CHB
inv.) for connection cables.
Screen: connected to housing
Cable: PUR 6 x 2 x 0.14 mm2, 1 m / ø7 mm
Bending rad.: R ≥57 mm
Please use screened cables and cores twisted in pairs
(Data+/Data-, Clock+/Clock-, CHA/CHA inv., CHB/CHB
inv.) for connection cables.
Data transfer
nT
t1
T
Clock
t2
Data
Bit 1
MSB
3
Bit 0
LSB
T = 0.5...10 µs
t1 = 0.25...5 µs
t2 ≤ 12...25µs
fmax.2MHz
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Subject to modification in technic and design. Errors and omissions excepted.
Screen: connected to housing
Cable: PUR 4 x 2 x 0.14 mm2, 1 m / ø6 mm
Bending rad.: R ≥49 mm
7/3/2014
Connec. Core color Signals
SSI without incremental
with connector M12, 8-pin or cable
Encoders without bearings - absolute
Absolute encoder, 1 or 2 sensing head
Magnetic sensing, hollow shaft ø30 mm
Singleturn 13...16 bit, additional incremental signals 1024...8192
MHAD 50 - HDmag
Terminal significance
LED functional display
+Vs
Encoder supply voltage.
0V
Encoder ground connection relating to +Vs.
Data+
Positive SSI data output.
SSI
LED
Green*
Data-
Negative SSI data output.
Clock+
Positive SSI clock input.
Clock-
Negative SSI clock input.
Zero
Input for setting a zero point anywhere
within the encoder resolution. The zero
setting operation is triggered by a High
impulse after the rotation direction selection (DIR). Connect to 0 V after setting
operation for maximum interference
immunity.
Pulse duration >100 ms
Level HIGH >0.7 x (+Vs)
Level LOW <0.3 x (+Vs)
(4.5 V ≤(+Vs) ≤30 V)
Red
DATAVALID
Diagnostic output upon request.
■
■
Off
■
■
■
Rotor not present, not
correctly mounted or damaged
Mounting tolerances not respected
Internal error
Sensor is not present
Voltage supply not available or too
low
Internal error
CANopen
LED
Green* **
Description / possible causes
■ Voltage supply is present
■ Encoder is in the OPERATIONAL
state
■ Rotor not present, not
Red
correctly mounted or damaged
■ Mounting tolerances not respected
■ Internal error
Green single flash** ■ The device is in the
STOPPED state
■
The device is in the
Green blinking**
PREOPERATIONAL state
■
Sensor is not present
Off
■ Voltage supply not available or too
low
■ Internal error
Output signals
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56DWURWDWLQJGLUHFWLRQFZ
* While the whole rotation the LED must emit green light.
** CAN RUN LED according to CiA DR-303-3.
&+$
Trigger level
&+$
Outputs
RS422
Output level High
>2.4 V (I = -20 mA)
Output level Low
<0.5 V (I = 20 mA)
&+%
Load High / Low
<20 mA
&+%
Outputs
HTL
Output level High
>+Vs -3 V (I = -20 mA)
Output level Low
<0.5 V (I = 20 mA)
Load High / Low
<20 mA
4
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Subject to modification in technic and design. Errors and omissions excepted.
UP/DOWN counting direction input.
This input is standard on High. DIR High
means ascending position value with
clockwise (cw) rotation direction.
Connect to +Vs or 0 V for maximum
interference according to rotation direction
Level HIGH >0.7 x (+Vs)
Level LOW <0.3 x (+Vs)
(4.5 V ≤(+Vs) ≤30 V)
■
7/3/2014
DIR
Description / possible causes
■ Voltage supply is present
■ Encoder is OPERATIONAL
Encoders without bearings - absolute
Absolute encoder, 1 or 2 sensing head
Magnetic sensing, hollow shaft ø30 mm
Singleturn 13...16 bit, additional incremental signals 1024...8192
MHAD 50 - HDmag
Dimensions
MHAD with connector M12
20
18
27
4
29
ø 3,2
cw
8
20
31
27
4
18
8
2
ø 30 H7
22
4
ø14
ø
ø14
28
28
22
cw
31
ø3
29
ø 3,2
ø
ø 30 H7
ø 40
2
3,
ø 40
ø 50
ø3
MHAD with cable
3,2
ø 50
MHAD mounting tolerance
$$
$
$
$
Subject to modification in technic and design. Errors and omissions excepted.
5
www.baumer.com/motion
7/3/2014
$
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