7I77U

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The 7I77U has 6 Axis of  analog servo outputs with encoder feedback, analog spindle speed control with encoder feedback, 32 isolated inputs and 16 isolated outputs.

• Connects to a 5i25 or 6i25 or 7i92 or 7i92TF with a DB25M – DB25M IEEE cable
  
• Connects to a 7i92TM directly or with DB25M-DB25F cable.
• Connects to any 7i92T P1 port or to 7i92TH with DB25M-IDC26 cable.
• 6 Axis analog servo with high speed encoder feedback
  
• 32 isolated inputs and 16 isolated outputs
• 1 spindle output control with high speed encoder input

The 7I77U is daughter card for use with MESA’s 25 pin I/O FPGA cards like the 6I25, 7I92TM or 7I96.  The 7I77U is designed for interfacing  up to 6 Axis of analog servo motor drives and also provides 48 isolated I/O points for general purpose field I/O use.  Six +-10V analog outputs and six encoder inputs (all with index) are provided for servo interfacing.  Six floating drive enable outputs allow control of active high or active low drive enables.  Encoder inputs can be individually set for differential or single ended mode.  48 points of isolated field I/O are provided for general control use including limit switch and control panel inputs, coolant enable and tool changer control outputs.  Isolated I/O includes 32 sinking inputs and 16 sinking, sourcing , or push-pull outputs. Inputs can sense 5V to 32V signals and the outputs can switch 5V through 28V signals.  Maximum output load is 500 mA.  Outputs are short circuit protected.  In addition to the being able to read digital on/off status of each input,  four input pin voltages are readable with 8 bit resolution, and two MPG encoder inputs are provided as an option on four field inputs.  Field I/O is powered by an isolated 10-32V field power source.  One RS-422 interface is provided for I/O expansion via a serial I/O daughter card.  All field wiring is terminated in pluggable 3.5 mm screw terminal blocks.

 Enhanced 7I77U features:

Unlike the 7I77, the 7I77U does not require flyback diodes on inductive loads even at full 500 mA loads.

Field power is divided into two sections for mixed voltage applications.

Each digital output can be programmed individually for sourcing, sinking, or push-pull modes