imo grl-tr4a plc smart i/o 20.4-28.8vdc

Why Choose the LS Electric GRL-TR4A 32-Channel Transistor Output Module?

The GRL-TR4A Smart I/O module is purpose-built for systems that utilize LS Electric’s Rnet (Rapid Network) protocol for distributed I/O. If you need a high-density output solution in a RAPIEnet-based control architecture, this 32-channel transistor output module is an excellent choice. By using the GRL-TR4A, you can offload a large number of digital outputs from the main PLC to a remote node, simplifying wiring to field devices in distant parts of a machine or plant. It’s ideal for controlling multiple solenoids, indicator lamps, or relay coils where space is at a premium – one module can handle 32 outputs, reducing the need for multiple smaller output cards.

Key Features of the GRL-TR4A Transistor Output Module

• 32 DC Outputs – Open-collector transistor outputs rated for 24 V DC switching.
• Rnet Communication – Built-in Rnet interface running at 1 Mbps.
• Screw Terminal Connection – Secure wiring for up to 32 output circuits.
• Status Indicators – LED indicators for each output plus module/network status.
• Industrial Build – Operates on 20.4–28.8 V DC with compact DIN-rail mounting.

How to Install the LS Electric GRL-TR4A Module

Install the GRL-TR4A by snapping it onto a standard 35 mm DIN rail. Connect the Rnet communication cable to the network port and wire each output channel to its load. Apply 24 V DC power to the logic and outputs, following terminal labels. Configure the device using the PLC’s Rnet setup and confirm address and communication status via diagnostic LEDs.

LS Electric GRL-TR4A – 32-Channel Transistor Output Module for Rnet Smart I/O

The GRL-TR4A is a high-density transistor output module intended for distributed control systems that use LS Electric’s Rnet networking. It provides 32 discrete outputs in a single unit, making it extremely space- and cost-efficient for applications requiring many digital control signals at a remote location. As part of LS Electric’s Smart I/O series, the GRL-TR4A has an integrated Rnet communication adapter, allowing direct network connection.

Output Channel Details: Each of the 32 outputs is an NPN open-collector transistor, supporting 0.1 A at 24 V DC. These outputs are ideal for controlling indicators, small relays, or interface logic. Each output is electronically protected and has an LED indicator for real-time monitoring.

Rnet Network Integration: Rnet offers 1 Mbps deterministic communication with real-time responsiveness. The GRL-TR4A is scanned by the PLC Rnet master and appears as a remote I/O station. Network diagnostics and status LEDs aid quick troubleshooting and confirmation of network health.

Frequently Asked Questions About the GRL-TR4A

• Can I drive solenoid valves directly with this module?
• Does this module support hot-swapping?
• Is this module compatible with third-party PLCs?
• How many of these modules can I install on an Rnet network?
• What safety features does it have?

Key Benefits:

• Offloads up to 32 digital outputs from the main PLC.
• Reduces wiring complexity and panel clutter.
• Provides real-time status feedback via LEDs.
• Ensures reliable networked operation with Rnet diagnostics.

Applications:

• Solenoid and valve control
• Indicator lamp and beacon driving
• Remote relay coil switching
• Distributed I/O expansion in Rnet systems

Frequently Asked Questions

For high-density remote output needs in Rnet architectures, choose the LS Electric GRL-TR4A to simplify wiring and ensure reliable performance across your distributed automation system.