External current limit (i limit), Drive output connected to a switch/relay, Drive output connected to active low input – Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual User Manual

Page 77: Using a switch/relay, Using an opto-isolator

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Publication 1398-5.2 – PDF 1997

Interfaces

6-13

External Current Limit (I LIMIT)

ILIMIT limits the current, which provides torque, to the motor. The
range is 0 to +10 Volts (where 10 Volts corresponds to maximum drive
current).The analog I LIMIT signal is converted into a digital word by
a 10-bit ADC (analog to digital converter). If the I LIMIT input is not
connected, current is not limited.

Figure 6.14

Drive Output Connected to a Switch/Relay

Figure 6.15

Drive Output Connected to Active Low Input
using a Switch/Relay

Figure 6.16

Drive Output Connected to Active Low Input
using an Opto-Isolator

Pin 13

Pin 6

Drive

J1

I/O COM

I/O Pwr

Solid State

Relay

(Drive)

I/O COM

I/O COM

3.3K

I/O Pwr

I/O Pwr

INPUT

OUTPUT

I/O COM

I/O Pwr

1K

I/O COM

I/O Pwr

3.3 K

INPUT

OUTPUT

(Drive)

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