Siko WH3650M Absolute encoder
Siko WH3650M Absolute encoder
Sku: SIK-WH3650M
Compact hollow shaft rotary encoder with SSI and IO-Link
Product Information
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.
- 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
Mechanical data
| Feature | Technical data | Additional information |
|---|---|---|
| Shaft | rustproof stainless steel | |
| Flange | Aluminium | |
| Housing | zinc die-casting | |
| Speed | 6000 rpm | with protection class IP65, transient for ≤10 min |
| 3000 rpm | with protection class IP65, continuous operation | |
| 4000 rpm | with protection class IP67, transient for ≤10 min | |
| 2000 rpm | with protection class IP67, continuous operation | |
| Starting torque | <0.007 Nm | with protection class IP65 |
| <0.01 Nm | with protection class IP67 | |
| Shaft load rating | 40 N | radial |
| 20 N | axial | |
| Cable sheath | PUR | ø6.2 ±0.2 mm, with IO-Link |
| PUR | ø5.5 ±0.2 mm, with SSI | |
| Cable bending radius | 60 mm | static, with IO-Link |
| 130 mm | dynamic, with IO-Link | |
| 45 mm | static, with SSI | |
| 65 mm | dynamic, with SSI | |
| Mounting type | stator coupling | mounting type DS1 |
| spring element | mounting type DS2 | |
| Weight | ~0.2 kg |
Electrical data
IO-Link interface
| Feature | Technical data | Additional information |
|---|---|---|
| Operating voltage | 18 … 30 V DC | reverse-polarity protected |
| Current consumption | ≤30 mA | |
| Power input | ≤300 mW | without load |
| Parameter storage | 104 cycles | also applies to calibration operations |
| Interface | IO-Link Version 1.1 | according to IEC 61131-9 |
| Parameter | SIKO Standard Profile | IOL |
| Smart Sensor Profile | IOLssp | |
| Type of connection | 1x M12 connector (A-coded) | 4-pole, 1x pin, E12E connection type |
SSI interface
| Feature | Technical data | Additional information |
|---|---|---|
| Operating voltage | 10 … 30 V DC | reverse-polarity protected |
| Current consumption | ≤40 mA | without load |
| Power input | ≤300 mW | without load |
| Parameter storage | 104 cycles | also applies to calibration operations |
| Digital inputs | 2 | calibration inputs, rotation direction. Both inputs active at high (comparator). |
| Input signal level high | ≥60 % from +UB | |
| Input signal level low | ≤30 % from +UB | |
| SSI clock speed input | 50 kHz … 2 MHz | |
| Monoflop time | ≤15 µs | |
| Interface | SSI | line driver according to RS485 |
| Cycle time | 2 ms | |
| Type of connection | 1x M12 connector (A-coded) | 8-pole, 1x pin, E12E connection type |
| open cable end | E1 connection type |
System data
| Feature | Technical data | Additional information |
|---|---|---|
| Scanning | magnetic | |
| Resolution | 12 bit | single-turn, 4096 steps/rotation, only with SSI |
| 13 bit | single-turn, 8192 steps/rotation, only with SSI | |
| 14 bit | single-turn, 16384 steps/rotation | |
| System accuracy | ±1° | |
| Repeat accuracy | ±0.2° | |
| Measuring range | 1 revolution(s) | single-turn |
| 4096 revolution(s) | 12 bit, only with SSI | |
| 65536 revolution(s) | 16 bit, only with SSI | |
| 262144 revolution(s) | 18 bit, only with IO-Link | |
| 16777216 revolution(s) | 24 bit, only with SSI |
Ambient conditions
| Feature | Technical data | Additional information |
|---|---|---|
| Ambient temperature | -40 … 85 °C | |
| Storage temperature | -40 … 85 °C | |
| Relative humidity | 93 % | condensation inadmissible |
| EMC | DIN 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 Class A | radiation emission / radio interference suppression | |
| Protection category | IP65 | EN 60529 |
| IP67 | EN 60529 | |
| Shock resistance | 2500 m/s2, 6 ms | EN 60068-2-27 |
| Vibration resistance | 300 m/s2, 10 … 2000 Hz | EN 60068-2-6 |
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 bit | |
|
8192 |
13 bit | ||
|
16384 |
14 bit | ||
| Number of revolutions |
C1 |
singleturn | |
|
4096 |
12 bit, multiturn | ||
|
65536 |
16 bit, multiturn | ||
|
262144 |
18 bit, multiturn | ||
|
16777216 |
24 bit, multiturn | ||
| 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 end | |
|
E12E |
plug | ||
| Cable length |
I… |
01.0, 02.0, 03.0, 05.0, 10.0 in m | only with connection type E1 |
|
OK |
without cable | only with connection type E12E | |
Ordering key
WH3650M-A-B-C-D-E-F-G-H-I-S
For more information, click here!
Pin assignment
SSI, E12E
| Signal | PIN |
|---|---|
| GND | 1 |
| +UB | 2 |
| SSI cycle + | 3 |
| SSI cycle – | 4 |
| SSI data + | 5 |
| SSI data – | 6 |
| Calibration input | 7 |
| Rotational direction | 8 |
IO-Link, E12E
| Signal | PIN |
|---|---|
| L+ (+UB) | 1 |
| nc | 2 |
| L- (GND) | 3 |
| C/Q | 4 |
SSI, E1
| Signal | Color |
|---|---|
| GND | white |
| +UB | brown |
| SSI cycle + | green |
| SSI cycle – | yellow |
| SSI data + | gray |
| SSI data – | pink |
| Calibration input | blue |
| Rotational direction | 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 Data | Smart Value | Smart 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