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Electronic Theatre Controls Inc

Encoders for 3rd Party Motor Control

There are multiple encoder options that can be used with ETC Rigging 3rd Party Controls.

Fixed Speed Motor Starter (FSMS):

  • TTL Encoder
    • 5-30 VDC Supply
    • 5V Signal
  • HTL
    • 5-30 VDC Supply
    • Requires HTL -> TTL Conversion Card
  • Quadrature Encoder
  • 10k Analog Pot

 

Variable Speed Motor Starter (VSMS):

  • TTL Encoder
    • 5-30 VDC Supply
    • 5V Signal
  • HTL
    • 5-30 VDC Supply
    • Requires HTL -> TTL Conversion Card
  • 10k Analog Pot
    • For use with SoftLift Fixed Speed Control Only, not reccomended.

 

Motor Control Interface (MCI):

  • TTL Encoder
    • 5-30 VDC Supply
    • 5V Signal
  • HTL
    • 5-30 VDC Supply
    • Requires HTL -> TTL Conversion Card
  • 10k Analog Pot

 

ETC recommends using Belden 9728 or equivalent for encoder field wiring.

 

Encoder Type Signal Level Supply Voltage Signal Output Voltage
TTL High 4.75 - 30 VDC 3V Min (5V Max)
  Low 4.75 - 30 VDC 0.5V Max
HTL* High 4.75 - 9 VDC 3V Min
  High 9 - 30 VDC Supply Voltage - 3V (Min)
  Low 4.75 - 30 VDC 0.5V Max

*Requires an HTL -> TTL Conversion Card

 

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