Allen‑Bradley 1756HP‑TIME ControlLogix GPS Time Sync Module

The Allen‑Bradley 1756HP‑TIME is a high‑precision time synchronization module built for ControlLogix platforms.

It relies on GPS technology to provide consistent and accurate time across multiple industrial interfaces.

This module installs into any single slot of a 1756 ControlLogix chassis for simple system integration.

It comes with built‑in ports for Ethernet, IRIG‑B, and a GPS antenna to support various time protocols.

The 1756HP‑TIME supports IRIG‑B, PTP, NTP, CST, and UTC to meet diverse synchronization requirements.

It creates a unified time reference for event triggering, data logging, reporting, and system troubleshooting.

Configuration is managed through Studio 5000 Logix Designer with initial IP setup via BOOTP/DHCP.

Dual Ethernet ports use Rockwell’s dual‑port switch technology for improved network flexibility.

The module can act as a master or slave clock when connected to an IRIG‑B network.

It provides accurate timestamps and time coordination for analysis during abnormal system events.

The 1756HP‑TIME receives all required power directly from the ControlLogix backplane.

It draws 1,200 mA at 5V DC and 2.5 mA at 24V DC during normal operation.

Maximum power dissipation for the module is limited to 6.19 Watts for stable thermal performance.

Backplane ratings are 1.01A @ 5.1V DC and 2.64 mA @ 1.2V DC for consistent power delivery.

Isolation voltage is 30V continuous, with type testing at 1000V AC for 60 seconds.

Isolation is provided between Ethernet ports, IRIG‑B, and the backplane to reduce interference.

The 1756HP‑TIME uses a 20‑pin connection with spring‑clamp terminals for secure wiring.

Recommended wire size for field connections is 20 AWG to ensure reliable contact.

Dimensions are 5.51 × 4.41 × 5.71 inches with a single‑slot width in the chassis.

It uses an open enclosure design with no additional protective casing for chassis mounting.

Operating temperature ranges from 0°C to 60°C for standard industrial environments.

Total weight of the module is 0.3 pounds, equivalent to 0.1 kilograms for easy handling.

The 1756HP‑TIME supports IRIG‑B protocol through a BNC connector for clock operations.

Dual Ethernet ports allow PTP and NTP communication for network‑wide time distribution.

An SMA antenna connector connects to a GPS bullet antenna for satellite time acquisition.

The module handles CST and UTC conversion across the ControlLogix backplane efficiently.

PPS output activates every second for 100 ms to confirm a locked and valid time source.

Status indicators show synchronization status, time lock, and overall module health clearly.

The 1756HP‑TIME includes three main LEDs for real‑time operational monitoring.

The PPS LED shows that the module has successfully locked to a GPS time source.

This LED toggles once per second for 100 ms to indicate stable time synchronization.

The SYNCH LED confirms whether the module is locked to a designated master time source.

The OK LED shows proper module startup or signals the presence of a hardware fault.

These indicators allow quick on‑site diagnosis without extra software or testing tools.

Choose any available single slot in a standard 1756 ControlLogix chassis for installation.

Align the 1756HP‑TIME with the backplane connector and slide it firmly into position.

Secure the module using the retention clips to resist vibration and ensure stable contact.

Connect the GPS antenna to the SMA port and route cables away from electrical noise sources.

Attach the IRIG‑B network to the BNC port and set master or slave mode as needed.

Connect Ethernet cables to the dual ports for configuration and time distribution.

Use a BOOTP/DHCP server to set the initial IP address before software configuration.

Open Studio 5000 Logix Designer to set protocols, sync modes, and network parameters.

Check the PPS, SYNCH, and OK LEDs to confirm power, lock, and fault‑free operation.