NAVIGATION: encoder > X8_(Option_Channel3) > TTL_Encoder simulation > Technical data

Technical data

TTL signal evaluation

  Specification
Interface
  • Differential voltage input, RS422-compatible; pay attention to voltage range!
  • Max. cable length: 10 m
  • Connector: 15-pin D-SUB, High-Density, female
  • Wave terminating resistor built-in to device: 120 Ω
  Min. Max.  
Input frequency 0 Hz 500 kHz  
Input voltage      
Differential switching level "High" +0.1 V    
Differential switching level "Low"   -0.1 V  
Signal level referred to ground 0 V +5 V  

Tabelle: TTL encoder input on X8



TTL encoder simulation

  Specification
Interface
  • RS422-compliant
  • Electrically isolated from the drive controller

  • Connector: 15-pin D-SUB, High-Density, female
  Min. Max.  
Output frequency 0 Hz 1000 kHz  
Output voltage      
Signal level referred to ground 0 V +5 V  
Differential output voltage |U| 2.0 V 5.0 V Wave terminating resistance ≥ 100 Ω

Tabelle: TTL encoder simulation on X8





Voltage supply to external encoder

  Specification
  Min. Max.  
Output voltage + 4.75 V + 5.25 V +5 V
Output current   250 mA  

Tabelle: Voltage supply for external encoders on X8






NOTE:

No provision is made for connection of sensor cables to compensate for the voltage drop. So the chosen supply cable cross-section should take account of the voltage drop.




NOTE:

The encoder supply on X8/3 is short-circuit-proof.