1 / 3

Allen-Bradley

Allen-Bradley 1756-HSC ControlLogix High Speed Counter Module

SKU 1756-HSC

Disponibile

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-HSC
Origin United States
Product Type: ControlLogix High-Speed Counter Modules
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 0.3 kg
Dimensions: 145 mm x 35 mm x 130 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Quantità

Call sales Contact

Product Description

Description

The Allen-Bradley 1756-HSC is a ControlLogix high-speed counter module designed for high-speed pulse counting, frequency measurement, and encoder input processing in industrial automation systems. The 1756-HSC counts incoming pulses using either Counter or Frequency operational modes and returns values as accumulated counts or calculated frequencies. Operating through a Producer/Consumer network model, it performs hardware-driven output evaluations independently from controller scans, enabling fast response times. The module is compatible with incremental encoders, 3-wire DC proximity sensors, and photoelectric sensors. It operates within the ControlLogix system chassis and supports removal and insertion under power (RIUP).

Features

Features three Counter modes (Counter, Encoder x1, Encoder x4) and three Frequency modes (Rate Measurement, Period Rate, Continuous Rate).
Includes four hardware-driven, isolated onboard outputs capable of sourcing up to 1 A DC at 30V DC with response times under 50 microseconds.
Provides real-time manipulation of Preset and Rollover values on-the-fly via output tags when using the HSC Data-extended communication format.
Offers four Z-input storage modes: Store and Continue, Store/Wait/Resume, Store/Reset/Wait/Start, and Store/Reset/Start.
Supports direct chassis placement and remote chassis operation over EtherNet/IP or ControlNet networks.
Supports Removal and Insertion Under Power (RIUP) for module maintenance without disrupting system backplane power.

Applications

High-speed pulse counting and position monitoring with quadrature encoders.
Flowmeter rate and pulse measurement.
Turbine speed monitoring and frequency calculations.
High-speed part sensing, sorting, and packaging automation.

Technical Specifications

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Product Family	ControlLogix
Catalog Number	1756-HSC
Number of Counters	2 counters per module (using Inputs A and B)
Maximum Counter Frequency (Pulse)	1 MHz (pulse width > 500 ns)
Maximum Quadrature Frequency	250 kHz (minimum pulse width 2 us)
Maximum Frequency Mode Rate	500 kHz (pulse width > 1 us)
Maximum Count Range	Up to 16,000,000 counts
Internal Clock Frequency	4 MHz
Number of Outputs	4 sourcing outputs (isolated in pairs 0/1 and 2/3)
Output Voltage Range	Up to 30V DC
Output Current Sourcing	1 A DC per output
Output Turn-On/Off Response	< 50 us
Input Leakage Current	250 uA @ 5V DC
Removable Terminal Blocks (RTB)	1756-TBCH (cage clamp), 1756-TBS6H (spring clamp)
Operating Altitude	Up to 2000 m (6562 ft)

Connections/Interfaces

Connector Pin	Function
Pin 1	Z1 (12...24V)
Pin 2	Z0 (12...24V)
Pin 3	Z1 (5V)
Pin 4	Z0 (5V)
Pin 5	Z1 (RET)
Pin 6	Z0 (RET)
Pin 7	B1 (12...24V)
Pin 8	B0 (12...24V)
Pin 9	B1 (5V)
Pin 10	B0 (5V)
Pin 11	B1 (RET)
Pin 12	B0 (RET)
Pin 13	A1 (12...24V)
Pin 14	A0 (12...24V)
Pin 15	A1 (5V)
Pin 16	A0 (5V)
Pin 17	A1 (RET)
Pin 18	A0 (RET)
Pin 19	Not Used
Pin 20	Not Used
Pin 21	Not Used
Pin 22	Not Used
Pin 23	Not Used
Pin 24	Not Used
Pin 25	COMMON 0
Pin 26	COMMON 1
Pin 27	COMMON 0
Pin 28	COMMON 1
Pin 29	COMMON 0
Pin 30	COMMON 1
Pin 31	DC-0(+)
Pin 32	DC-1(+)
Pin 33	Out 2
Pin 34	Out 0
Pin 35	Out 3
Pin 36	Out 1

Installation Guidelines

Enclosure Requirements: Install open-type equipment inside an enclosure suitable for specific environmental conditions to prevent personal injury from live parts.
Wiring and Cable Shielding: Recommended cable type is Belden 8761 shielded wire. Connect ground drain wire to a chassis mounting tab designated as a functional signal ground.
Electrostatic Discharge (ESD): Wear an approved grounding wriststrap and handle the module using static-safe precautions.
RTB Assembly: Key the Removable Terminal Block (RTB) using keying bands to prevent incorrect connection. Ensure field-side power is removed before wiring.
Conductor Sizing: When using 1756-TBCH, do not wire more than two 0.33...1.3 mm2 (22...16 AWG) conductors on any single terminal. For 1756-TBS6H, connect only one conductor per terminal.

Compliance and Certifications

North American Hazardous Location Approval: Class I Division 2, Groups A, B, C, D
Pollution Degree 2, Overvoltage Category II (IEC 60664-1)
Group 1, Class A Equipment (IEC/CISPR 11)

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What primary operational modes are available on the module?

The device provides Counter mode, Encoder x1, Encoder x4, Frequency rate measurement, Period Rate, and Continuous Rate modes.

What is the maximum input frequency supported by channel inputs?

The module accepts pulse input rates up to 1 MHz on Channel A, quadrature signals up to 250 kHz, and frequency inputs up to 500 kHz.

Which terminal blocks are compatible with the device?

The module is compatible with 1756-TBCH cage clamp and 1756-TBS6H spring clamp removable terminal blocks.

Does the power need to be disconnected from the chassis during replacement?

No, the device supports Removal and Insertion Under Power (RIUP), allowing installation or removal while chassis power is applied.

Reviews

1756-HSC

Stock & lead time on request

Call

1 3