Wiring inputs – Applied Motion 1240i-485 User Manual

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Wiring Inputs

The 1240i input circuits can be used with

sourcing or sinking signals, 5 to 24 volts.

This allows connection to TTL circuits,

PLCs, relays and mechanical switches.

Because the input circuits are isolated, they

require a source of power. If you are con-

necting to a TTL circuit or to a PLC, you

should be able to get power from the PLC or

TTL power supply. If you are using relays or

mechanical switches, you will need a 5-24

V power supply. This also applies if you are

connecting the 1240i inputs to another Si

product from Applied Motion, like the Si-1

and Si-100 indexers or the 3540i, Si3540,

Si5580, 7080i and BL series drives.

Connecting an Input to a Switch or Relay

Use normally open momentary switch to trigger 1240i using Wait Input instruction.

Use single throw switch if using the If Input instruction for program branching.

Use normally open momentary switch for jogging.

Note: If current is flowing into or out of a 1240i input, the logic state of that input is

low. If no current is flowing, or the input is not connected, the logic state is high.

The diagrams on the following pages show how to connect 1240i inputs to various

devices.

The maximum voltage that can be applied to an input terminal

is 24 volts DC. Never apply AC voltage to an input terminal.

2200

inside Si3540

COM

IN1

IN2

IN3

IN4

CWJOG

CCWJOG

1240i

switch or relay

(closed=logic low)

COM

5-24

VDC

Power

Supply