Country: USA
Languages: Englisch

Headquarters: SIKO GmbH Weihermattenweg 2 79256 Buchenbach Germany Phone+49 7661 394-0

Subsidiary: SIKO Products Inc. 2155 Bishop Circle E Dexter, MI 48130 USA Phone+1 (734) 426-3476

Absolute encoder WH3650M

Compact hollow shaft rotary encoder with SSI and IO-Link

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The WH3650M rotary encoder is an absolute magnetic single- and multi-turn rotary encoder, which impresses with its extremely compact design. It is particularly robust and resistant to vibrations.  Thanks to its high degree of protection up to IP67 and a temperature range of -40° C … +85° C, it is also suitable for demanding industrial applications. The particularly small design with a diameter of only 36 mm predestines the rotary encoder for use in applications with limited installation space. Thanks to the IO-Link and SSI interfaces, it is ready for Industry 4.0 and ideally suited for point-to-point communication in automation networks.

Profile WH3650M:

  • Absolute wear-free magnetic encoder
  • Multiturn without gearbox and without battery
  • Interface SSI, IO-Link
  • Extremely compact and very robust design
  • IP67 protection class
  • Extensive temperature range -40 … 85° C
  • Optimal price-performance ratio
  • Industry 4.0 ready
IO-Link SSI UL listing marks for Canada and the United States

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Mechanical data
FeatureTechnical dataAdditional information
Shaftrustproof stainless steel
Flangealuminum
Housingzinc die-casting
Speed6000 rpm at protection class IP65, transient for ≤10 min
3000 rpm at protection class IP65, continuous operation
4000 rpm at protection class IP67, transient for ≤10 min
2000 rpm at protection class IP67, continuous operation
Starting torque<0.007 Nm at 20 °C at protection class IP65
<0.01 Nm at 20 °C at protection class IP67
Shaft load rating40 N radial
20 N axial
Cable sheathPUR ø5.5 ±0.2 mm, with SSI
Cable bending radius45 mm static, at SSI
65 mm dynamic, at SSI
Mounting typestator coupling mounting type DS1
spring element mounting type DS2
Weight~0.2 kg
Electrical data
IO-Link interface
FeatureTechnical dataAdditional information
Operating voltage18 … 30 V DC reverse polarity protected, the power-supply unit corresponds to Class 2 (UL 1310)
Current consumption≤40 mA without load
Parameter storage104 cycles also applies to calibration operations
Status displaytwo-color LED (red/green) device status
InterfaceIO-Link Version 1.1 according to IEC 61131-9
ParameterSIKO standard profile IOL
smart sensor profile IOLssp
Type of connection1x M12 connector (A-coded) 4-pole, 1x pin, E12E connection type
SSI interface
FeatureTechnical dataAdditional information
Operating voltage10 … 30 V DC reverse polarity protected, the power-supply unit corresponds to Class 2 (UL 1310)
Current consumption≤40 mA without load
Parameter storage104 cycles also applies to calibration operations
Digital inputs2 calibration (SET), direction of rotation (DIR). Both inputs active at high (comparator).
Input signal level high≥60 % from +UB <+UB
Input signal level low≤30 % from +UB
SSI clock speed input50 kHz … 2 MHz
Status displaytwo-color LED (red/green) device status
Monoflop time≤15 µs
InterfaceSSI line driver according to RS485
Cycle time2 ms
Type of connection1x M12 connector (A-coded) 8-pole, 1x pin, E12E connection type
open cable end E1 connection type
System data
FeatureTechnical dataAdditional information
Scanningmagnetic
Resolution12 bit single-turn, 4096 steps/rotation, only at SSI
13 bit single-turn, 8192 steps/rotation, only at SSI
14 bit single-turn, 16384 steps/rotation
System accuracy±1°
Repeat accuracy ±0.2°
Measuring range1 revolution(s) single-turn
4096 revolution(s) 12 bit, only at SSI
65536 revolution(s) 16 bit, only at SSI
262144 revolution(s) 18 bit, only at IO-Link
16777216 revolution(s) 24 bit, only at SSI
ApprovalUL UL 61010-1, File No. E503367
Ambient conditions
FeatureTechnical dataAdditional information
Ambient temperature-40 … 85 °C
Storage temperature-40 … 85 °C
Relative humidity93 % condensation inadmissible
EMCDIN EN 61326-1 immunity requirement of industry
DIN EN 61000-4-2, -3, -6, -8 interference resistance / immission
DIN EN 61000-4-4 burst
DIN EN 61000-6-2 interference resistance / immission
DIN EN 61000-6-4 emitted interference / emission
DIN EN 55011 Classes A and B radiation emission / radio interference suppression
Safety regulationsUL 61010-1 Indoor use, outdoor use possible, not intended for use involving direct exposure to UV light.
Environment dry / wet.
Protection class III as per EN 61140.
Pollution degree 2 as per EN 61010.
Maximum humidity 93% at 40 °C.
Protection categoryIP65 EN 60529 (protection type not yet reviewed by UL)
IP67 EN 60529 (protection type not yet reviewed by UL)
Shock resistance2500 m/s2, 6 ms EN 60068-2-27
Vibration resistance300 m/s2, 10 … 2000 Hz EN 60068-2-6
Absolute encoder WH3650M
Pin assignment
SSI, E12E
SignalPIN
GND 1
+UB 2
T + 3
T - 4
D + 5
D - 6
SET 7
DIR 8
IO-Link, E12E
SignalPIN
L+ (+UB) 1
nc 2
L- (GND) 3
C/Q 4
SSI, E1
SignalColor
GND white
+UB brown
T + green
T - yellow
D + gray
D - pink
SET blue
DIR red
Industry 4.0
In most cases, data exchange with the absolute rotary encoder is limited to the exchange of process data. In addition to the process data, the rotary encoder provides additional information with an IO-Link interface that can be evaluated for condition monitoring up to predictive maintenance:
Process DataSmart ValueSmart Function
Actual position Temperature Condition monitoring
Speed Limit speed Application overload
  Operation hours counter Operating time
  Acceleration events Activation of PLC functions
  Speed events Activation of PLC functions
  Electronic type label Asset management
Scope of delivery
  • Quick Start Guide
  • WH3650M
Ordering table
Feature Order data Specifications Additional information
Interface/protocol
AIOL
IO-Link SIKO standard profile
IOLssp
IO-Link smart sensor profile
SSIb
SSI, binary
SSIg
SSI, gray
 
Steps per revolution
B4096
12 bitonly with SSI
8192
13 bitonly with SSI
16384
14 bitonly with IO-link
 
Number of revolutions
C1
singleturn
4096
12 bit, multiturnonly with SSI
65536
16 bit, multiturnonly with SSI
262144
18 bit, multiturnonly with IO-link
16777216
24 bit, multiturnonly with SSI
 
Hollow shaft/diameter
D6
ø6 mm
8
ø8 mm
10
ø10 mm
1/4
ø1/4 in
 
Mounting type
EDS1
stator coupling
DS2
spring element
 
Protection category
FIP65
IP65
IP67
IP67
 
Position of electrical connection
GA
axial
R
radial
 
Type of connection
HE1
open cable endonly with SSI
E12E
plug
 
Cable length
I...
01.0, 02.0, 05.0, 10.0 in monly with connection type E1
OK
without cableonly with connection type E12E
 
Ordering key
WH3650M
-
A
-
B
-
C
-
D
-
E
-
F
-
G
-
H
-
I
-
S
additional accessoriesOrdering key
Mating connector,

4-pole, socket

83526
Mating connector, 4-pole, angle socket83091
Mating connector,

8-pole, socket

83525
Mating connector, 8-pole, angle socket87599

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