· Product Introduction

SPS9 Series Differential Signal Converter converts differential signals (A+/A-, B+/B-, C+/C-, D+/D-) from devices like servo encoders and optical grating rulers into standard PLC high-speed counting signals (phases A, B, C, D). It is widely used in power, railway, telecommunications, PLC measurement and control systems, and various automated control systems.

SPS9-TTL Series Differential-to-Single-Ended Module is meticulously designed with internal optical coupler isolation between its front and rear stages. Using this signal for closed-loop control significantly enhances signal accuracy. This product is characterized by high precision, high isolation, high speed, and low drift. It is suitable for resolving interface conversion between the differential-mode outputs of rotary encoders/optical grating rulers and microcontrollers/PLC controllers. It can also be applied as a conversion interface for high-speed counter modules and pulse input terminals of various PLCs (including Siemens, ABB, Omron, Mitsubishi, Panasonic, Delta), as well as for signal transmission between motor encoders, optical grating rulers, inverters, and PLC controllers. It is particularly well-suited for motor automatic control applications and related fields.

This product requires independent power supply and adopts DIN 35mm standard rail mounting, enabling simple field installation and flexible deployment for various application environments.

· Basic Parameters

Power Supply   DC12～28V(DC24V recommended)

Power Consumption ＜1.5W

Isolation Voltage 3000VDC

Power Protection Reverse connection voltage< -40V

Dielectric Strength 1500 VAC / 1 minute(Power, Input, Output)

Insulation Resistance ≥100MΩ (Power, Input, Output)

EMC Compatibility Complies with GB/T18268.1 (IEC61326-1)

· Input Terminal

Input Signal 2/3/4-Channel Differential Signals

Input Signal Frequency 0～500KHz

Signal Voltage  DC3.5-5V

· Output Terminal

Output Signal       5V Open Collector Single-Ended Signal

Signal Current  ≤20mA

Wiring Method  PNP/NPN Wiring

Voltage Drop Requirement The voltage difference between the positive and negative phases of the same differential pair at the input must be maintained between 3.5V and 5V.

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

Relative Humidity 10%～90%RH (non-condensing)

Atmospheric Pressure 80kPa～106kPa