Product Description
This series of industrial-grade shaft-mounted absolute encoders integrates multi-turn/single-turn, Profibus/SSI/parallel outputs, offers high resolution, IP65 protection, and multiple shaft diameter options. They are designed for high-precision position detection and motion control in harsh industrial environments.
Product parameters
EAC58 | EAC90 | SAM90 | PAM90 | |
Shaft Diameter (mm) | Φ8/Φ10/Φ12H7 | Φ12H7/Φ15H7/Φ20H7/Φ25H7/Φ28H7/ | Φ12H7/Φ15H7/Φ20H7/Φ24H7/Φ28H7/ | Φ12H7/Φ15H7/Φ20H7/Φ24H7/Φ28H7/ |
Protection Rating | IP65 | |||
Maximum Speed (rpm) | 6000 | 6000 | 6000 | Max. 6000; during continuous operation, Max. 3000 |
Axial Force | 60N | 40N | 40N | 40 N |
Radial Force | 120N | 80N | 80N | 80 N |
Shock Resistance | 50G/11ms | 50G/11ms | 50G/11ms | 2500 m/s² 6ms |
Vibration Resistance | 10G 10~2000Hz | 10G 10~2000Hz | 10G 10~2000Hz | 100 m/s² 10~2000 Hz |
Bearing Life | 10⁹revolutions | |||
Moment of Inertia | 1.8×10⁻⁶kgm² | 1.8×10⁻⁶kgm² | 1.8×10⁻⁶kgm² | 72×10⁻⁶kgm² |
Starting Torque | <0.01Nm | <0.1Nm max | <0.1Nm max | Sleeve type: < 0.2 Nm" |
Main Material | Aluminum alloy | |||
Casing Material | Aluminum alloy | |||
Operating Temperature | -20°C~~+80°C | |||
Storage Temperature | -25°C~~+85°C | |||
Weight | 360g | 600g | Approx.600g | Approx. 900g |
Resolution | Conventional Resolution
| Conventional Resolution
| Available Conventional Resolutions
| Available Conventional Resolutions
|
Electrical characteristics
EAC58 | EAC90 | SAM90 | |||||
Output Type | SSI（10-30V） | SSI（5V） | Parallel port (10-30V) | Parallel port (5V) | SSI（10-30V） | SSI（5V） | SSI |
Output and Driver | RS422 | Push-pull, NPN, NPN open collector | RS422 | RS422 | RS422 | ||
Resolution | 13 Bits | 14 Bits | 13 Bits | ||||
Power Supply (Vdc) | 10-30V | 5V | 10-30V | 5V | 10-30V | 5V | 5-30V |
Current Consumption (No Load) | ≤200mA | ≤200mA | ≤200mA | ≤200mA | |||
Maximum Load Current | ±20mA | ±20mA | ±20mA | ±20mA | |||
Maximum Output Frequency | Max. 1MHz | Max. 40kHz | Max. 1MHz | Max. 1MHz | |||
Signal High Level | typ. 3.8V | typ. Ub-2.8V | typ. 3.4V | typ. 3.8V | typ. 3.8V | ||
Signal Low Level | Max. 0.5V | Max. 2.0V | Max. 0.5V | Max. 0.5V | Max. 0.5V | ||
Rise Time (Tr) | Max 100ns | Max 0.2μs | Max 100ns | Max 100ns | |||
Fall Time (Tf) | Max 100ns | Max 0.2μs | Max 100ns | Max 100ns | |||
PAM90 | |
Supply Voltage (+Ub) | 10~30 V DC |
Current Dissipation | Max. 0.29 A |
Linearity | ± 1/2 LSB (± 1 LSB at 13, 14-bit resolution) |
Interface Type | RS 485 |
Interface Protocol | Profibus-DP, encoder profile class 2 |
Transmission Rate | Max. 12 Mbit/s |
Address Setting | Set via DIP switch |
Compliant with CE requirements, according to EN61000-6-1, EN61000-6-4, EN61000-6-3 | |
Compliant with EMC international standards EN61000-4, EN61000-5 | |
EAC58
Terminal Configuration
SSI Synchronous Serial Port Wiring Guide
Signal | 0V | +Ub | +C | -C | +D | -D | ST * | V/R* | Shield |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | |
12-Pin Pin Numbering | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | PH |
Note：Absolute encoder parallel port output data bit definition: bit0 = MSB, bit1 = MSB - 1, bit2 = MSB - 2, ...
Parallel Port Wiring Guide
Signal | 0V | +Ub | bit0 | bit1 | bit2 | bit3 | bit4 | bit5 | bit6 |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | Black |
17-Pin Pin Numbering | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Gray Code (G) | / | / | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Binary Code (B) | |||||||||
Signal | bit7 | bit8 | bit9 | bit10 | bit11 | bit12 | V/R* | ST * | |
Color Code | Purple | Gray-Pink | Red-Blue | White-Green | Brown-Green | White-Yellow | Yellow-Brown | White-Gray | |
17-Pin Pin Numbering | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | |
Gray Code (G) | 8 | 9 | 10 | 11 | 12 | 13 | / | / | |
Binary Code (B) | |||||||||
Dimensional Drawings
EAC90
Terminal Configuration
SSI Synchronous Serial Port Wiring Guide
Signal | 0V | +Ub | +C | -C | +D | -D | ST * | V/R* | Shield |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | |
12-Pin Pin Numbering | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | PH |
Dimensional Drawings
SAM90
Terminal Configuration
SSI Synchronous Serial Port Wiring Guide
Signal | 0V | +Ub | +C | -C | +D | -D | ST * | V/R* | Shield |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | |
12-Pin Pin Numbering | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | PH |
Dimensional Drawings
PAM90
Wiring definition
E1: Address Setting Switch —— DIP1-DIP7 are the encoder address setting switches, arranged from low bit to high bit (left to right) following binary operation rules. As shown in the diagram, the default address is 4, and the maximum number of devices that can be connected to the Profibus network is 126.DIP8: CW (Clockwise) and CCW (Counterclockwise) Direction Change Button
E2: Terminal Setting Switch —— DIP1-DIP2 is OFF by defaultIf the encoder is a terminal or standalone device, set both DIP switches to ON at the same time (resistance: 120Ω)
Label | Description |
V+ | Power Supply |
GND | Power Ground |
B | Profibus-DP Incoming Line (Red) |
A | Profibus-DP Incoming Line (Green) |
B | Profibus-DP Outgoing Line (Red) |
A | Profibus-DP Outgoing Line (Green) |
Device installation
Installing a Profibus-DP encoder on a network involves completing a series of typical operations, which are the configuration of the Profibus-DP slave station. The operation steps are summarized as follows:
1- Add the encoder to the master station (refer to the corresponding section)；
2- Connect the encoder to the Profibus bus network. Whether it is placed in the middle or at the end depends on the physical position of the device in the bus；
3- Set the station address (this address must be unique in the network and consistent with the configured address)；
4- Perform application configuration on the master station, download the configuration to the encoder, and put the Profibus network into operation.
Two LED indicators can be seen from the back of the encoder's junction box, which indicate the device's operating status: the green light indicates the power supply status and should stay on continuously. The red light turns off only when cyclic data is exchanged between the Profibus master station and the encoder.
Note: To set parameters and configure slave stations in the Profibus-DP master station, you must use the GSD device file provided with the encoder. This file can be obtained from the accompanying CD.
DIP - Switch Settings (Slave Station Address Configuration)
Below, in addition to the standard positions of the address and terminal DIP switches,we provide an example of Profibus bus and device configuration.In this example, the device address is coded as 1011001, which corresponds to the decimal address 77. Bit 7 is the most significant bit, and bit 1 is the least significant bit. Bit 8 is the CW (clockwise) and CCW (counterclockwise) direction change button; bits 1-7 are used to set the encoder address bits, arranged from low to high when viewed left to right. Example 2: Distribution according to binary operation rules.Address
Network Characteristics
The physical medium used to create DP / FMS networks is Type A cable, which must have the following characteristics:
Parameter | Type A Cable |
Characteristic Impedance (Ω) | 135…165 at a certain frequency (3…20Mhz) |
Capacitance Unbalance (PF/m) | <30 |
Loop Resistance (Ω/Km) | ≤110 |
Core Diameter (mm) | >0.64*) |
Core Cross-section (mm²) | >0.34*) |
This type of cable is used in networks to allow optimization. More specifically, its maximum communication speed can reach 12 Mbaud. Related to the baud rate selection, the following is a table of the maximum physical distance for a bus segment:
Baud Rate (kbaud) | 9.6 | 19.2 | 93.75 | 187.5 | 500 | 1500 | 12000 |
Distance/Segment | 1200m | 1200m | 1200m | 1000m | 400m | 200m | 100m |
Finally, we understand the physical characteristics of the Profibus bus network.
Dimensional Drawings
Product Display
Rugged and compact: Metal housing and stainless steel shaft, with through-hole sleeve mounting, deliver high load capacity while saving space.
Full protection: IP65 protection and waterproof oil seals withstand harsh operating conditions.
High-precision, multi-protocol: Single- and multi-turn options, 14-bit high resolution, and support for Profibus, SSI, and parallel outputs.
Strong environmental adaptability: -20°C to 80°C wide operating temperature range, shock and vibration resistance, for stable and reliable operation.
Flexible configuration: A variety of shaft diameters (Ø8-28mm) and flange options are available to accommodate a variety of device interfaces.
Easy maintenance: 10-30VDC wide voltage supply and optional connector outputs simplify installation and maintenance.
Quality Control
The quality of encoders is directly related to the stability and reliability of industrial automation systems. We have built a full-process quality control system, strictly screening suppliers from raw material procurement to ensure that the performance of core components meets standards; in the production process, we use high-precision equipment and standardized processes, and cooperate with online detection technology for real-time monitoring; in the finished product stage, we conduct rigorous tests such as high and low temperature, electromagnetic compatibility, and life aging to eliminate performance risks. Each encoder has passed multiple quality inspection levels, and its excellent quality has laid a solid foundation for intelligent manufacturing, providing customers with long-term and stable use guarantees.
Application Cases
This series of shaft sleeve absolute encoders is suitable for machine tool positioning, conveyor transmission detection, lifting and hoisting position tracking, intelligent manufacturing workstation alignment, heavy industrial equipment monitoring and precision small equipment transmission control scenarios in the field of industrial automation.
