Mesa 7I37, 7I37TA, 7I37T User Manual

7I37/7I37T/7I37TA MANUAL

Isolated Anything-IO adapter

V2.1

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Table of Contents

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

OPTION JUMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CONNECTOR LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CONTROLLER CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

50 PIN ISOLATED I/O CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TERMINAL BLOCK ISOLATED I/O CONNECTOR . . . . . . . . . . . . . . . . . . . . . 7

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

CONTROLLER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

PINOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

POLARITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

I/O VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

INPUT CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

OUTPUT CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

OUTPUT TRANSISTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

INDUCTIVE LOADS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

AC LOADS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7I37 1

GENERAL

DESCRIPTION

This manual applies to the 7I37, 7I37T and 7I37TA. They will referred to as 7I37

unless a distinction is required. The 7I37 is an 8 output, 16 input isolated I/O interface
card. The 7I37 provides 8 Isolated 48VDC 1A output drivers and 16 Opto-isolated inputs.
All output drivers are low saturation voltage MOSFETS for low power dissipation. Each of
the 8 output switches is isolated from the others, allowing high side, low side, push-pull
and other output switch configurations. The 16 opto-isolated inputs will operate with input
voltages from 4 to 24 V. Reverse protection diodes are provided to allow use with AC
inputs. The 7I37 is compatible with the all Mesa 50 pin parallel I/O and FPGA cards.

OPTION JUMPERS

The 7I37 has a single option jumper: W1. W1 determines if the 7I37 card gets its

power from pin 49 of the controller connector. When W1 is in the up position (default),
the 7I37 cards gets its power from pin 49. When W1 is in the down position, The 7I37 is
disconnected from pin 49 and must be supplied with 5V power on P1.

7I37 2

CONNECTORS

7I37 CONNECTOR LOCATIONS