Allen-Bradley 1734-IB4

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1734-IB4

Type

Digital input module

Application

I/O module

Used with

POINT I/O adapters and terminal bases

Temperature

IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock):

Relative humidity

IEC 60068-2-30 (Test Db, Unpackaged Damp Heat): 5…95% noncondensing

Vibration

IEC 60068-2-6 (Test Fc, Operating): 5 g @ 10…500 Hz

Shock, operating

IEC60068-2-27 (Test Ea, Unpackaged Shock): 30 g

Shock

IEC60068-2-27 (Test Ea, Unpackaged Shock): 50 g

Emissions

IEC 61000-6-4

North American

T4A

UKEX/ATEX temp

T4

Enclosure type

None (open-style)

Mounting type

DIN rail

Number of inputs

4 (1 group of 4), sinking

Voltage, on-state, nom

24V DC

Voltage, on-state range

10…28.8V DC

Voltage, off-state, max

5V DC

Current, on-state, nom

4 mA @ 24V DC

Current, on-state range

2 mA…5 mA

Current, off-state, min

1.5 mA

Input filter time

0.5 ms hardware + (0…65 ms selectable)

POINTBus current, max

75 mA max @ 5V DC

Power dissipation, max

1.0 W @ 28.8V DC

Thermal dissipation

3.4 BTU/hr @ 28.8V, DC

Isolation voltage

50V (continuous), Reinforced insulation, Type tested at 2500V DC for 60 s, field-side to system

External DC power

24V DC @ 60 Hz

Terminal base unit

1734-TB, 1734-TBS, 1734-TB3, 1734-TB3S, 1734-TOP, 1734-TOPS, 1734-TOP3, or 1734-TOP3S

Wiring category

1 – on signal ports

Technical documents (1)

• Rockwell Automation POINT I/O selection guide 1734-SG001

Key features

• Four sinking inputs in one group of four
• Nominal 24V DC on-state, 4 mA at 24V DC
• Input filter of 0.5 ms hardware plus 0…65 ms selectable
• Mounts on DIN rail with listed 1734 terminal base units
• Maximum 75 mA POINTBus current at 5V DC

About the Allen-Bradley 1734-IB4

The 1734-IB4 is a POINT I/O 24V DC 4 channel sink input module. Its four sinking inputs sit in one group, with a nominal on-state of 24V DC (range 10…28.8V DC) and a maximum off-state of 5V DC. It is an open-style module for DIN rail mounting.

What is the 1734-IB4 used for?

It brings four digital signals from field devices into a POINT I/O system. The input filter is 0.5 ms hardware plus 0…65 ms selectable, and the module draws up to 75 mA at 5V DC from the POINTBus. Field-side isolation is 50V continuous with reinforced insulation, type tested at 2500V DC for 60 s. It fits the 1734-TB, 1734-TBS, 1734-TB3, 1734-TB3S, 1734-TOP, 1734-TOPS, 1734-TOP3 or 1734-TOP3S terminal base.

Lifecycle and successor

Active (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1734-IB4, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.