The ASS4K-12 encoder, once a well-recognized industrial model, has become increasingly difficult to obtain in the current market. For companies still using equipment based on this encoder, the lack of supply creates serious maintenance and procurement challenges. To address these issues, we provide a 1:1 customized replacement solution developed to fully match the parameters and performance of the original ASS4K-12. Our engineering team ensures that the replacement encoder can be directly installed and operate identically to the original, maintaining the same electrical interface, mounting dimensions, and output characteristics. In addition, our optimized manufacturing process shortens production lead time, helping customers resume normal operation quickly.
Our customized replacement encoders for the ASS4K-12 model have already been successfully implemented in multiple regions around the world, including the Middle East, Russia, Southeast Asia, Indonesia, and South America. These areas represent key industrial zones where steel production, mining, and heavy manufacturing play a vital role. Feedback from our international clients confirms that our replacement solution provides reliable long-term performance, even in environments with high temperature, vibration, and dust exposure. The global adoption of this solution demonstrates its reliability and adaptability in meeting diverse customer requirements across different industries and working conditions.
Replacement solution reference image.
Technical data
1. Connection data
Parameter
Details
Supply voltage
12…30 V DC
No-load power consumption
approx. 1 W
Resolution singleturn
Max. 16 bit (65536 steps per revolution) see type plate
Resolution multiturn
12 bit (4096 revolutions) see type plate
Data format
SSI, binary/gray code (see type plate)
2. SSI-Interface
Parameter
Details
Clock input
RS 422 / 5V
Input current
5 mA
Clock frequency
80kHz…1 MHz
Clock rate/transmission
25 / 13 (multiturn / singleturn)
SSI-time out
> 30 μs (without data repetition) < 20 μs (with data repetition)
Data interface
RS 422 / 5V
3. Control signals
Parameter
Details
V/IR, Z (input)
5…30V / 5mA
State (output)
HTL
Temperature range
-25°C…+85°C; For UL and CSA -25°C…+70°C
4. Degree of protection according to DIN EN 60529
Degree of protection
Sealing
Mech. permissable speed
Rotor moment of inertia
Breakaway torque
IP 66
with Labyrinth seal
≤6000 rpm
approx. 580 gcm²
approx. 6 Nm
IP 66 / IP 67
with axial shaft seal
≤4000 rpm
approx. 510 gcm²
approx. 8 Nm
IP 66 / IP 67
With radial shaft seal (for special applications, e.g. wet areas in rolling mills)
≤3000 rpm
approx. 510 gcm²
approx. 9 Nm
5. Vibration resistance, shock resistance and shaft load
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