Allen-Bradley 1769-HSC

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1769-HSC

Type

Counter module

Application

I/O module

Used with

1769 CompactLogix and Compact I/O systems

Bus current draw

425 mA, 5V DC 0 mA, 24V DC

Heat dissipation, max

6.21 W, the watts per point, plus the min watts, with all points energized

Isolation voltage

75V (continuous), reinforced insulation type, channel-to-system and channel-to-channel, Type tested at 1200V AC for 2 s

Weight, approx

309 g (0.681 lb)

Dimensions (HxWxD), approx

118 x 35 x 87 mm (4.65 x 1.38 x 3.43 in.), Height with mounting tabs 138 mm (5.43 in.)

Slot width

1

Module location

DIN rail or panel mount

Power supply distance rating

4 modules

Terminal screw torque

0.68 Nm (6 lbin)

Retaining screw torque

0.46 Nm (4.1 lbin)

Wire size

0.32…2.1 mm2 (22…14 AWG) solid copper wire 0.32…1.3 mm2 (22…16 AWG) stranded copper wire rated at 90 °C (194 °F) insulation max

Wire type

Cu-90 °C (194 °F)

Recommended cable

Individually shielded, twisted-pair cable (or the type recommended by the encoder or sensor manufacturer)

Wiring Category

2 - on signal ports

Product type code

109

Product code

19

Enclosure type rating

None (open-style)

Inputs

2 quadrature (ABZ) differential inputs

Input voltage range

2.6…30V DC

On-state voltage, max

30V DC

On-state voltage, min

2.6V DC

On-state current, min

6.8 mA

Off-state voltage, max

1.0V DC

Off-state current, max

1.5 mA

Input current, max

15 mA

Technical documents (1)

• Rockwell Automation technical data 1769-TD006

Key features

• Two quadrature (ABZ) differential inputs
• Maximum input frequency of 1 MHz
• Minimum pulse width 250 ns, phase separation 131 ns
• DIN rail or panel mounting, one slot wide
• Channel-to-channel and channel-to-system isolation

About the Allen-Bradley 1769-HSC

The 1769-HSC is a CompactLogix 2/4 channel high speed counter/encoder module. It has 2 quadrature (ABZ) differential inputs with an input range of 2.6 to 30V DC and a maximum input frequency of 1 MHz. It draws 425 mA at 5V DC and 0 mA at 24V DC from the bus and dissipates up to 6.21 W.

What is the 1769-HSC used for?

It counts fast pulses from encoders or sensors, for position, length or speed measurement that the controller scan cannot catch. Individually shielded, twisted-pair cable is recommended, or the cable the encoder maker specifies. It mounts on DIN rail or panel and has a power supply distance rating of 4 modules.

Lifecycle and successor

Active Mature (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 1769-HSC, 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.