Omron GRT1-DRT DeviceNet Communications Unit

The Omron GRT1-DRT is a DeviceNet communications master unit designed for distributed control systems using the GRT1 series of modular slice I/O. Supporting up to 64 I/O units and handling up to 1024 I/O points (128 bytes), it provides compact, high-density, and reliable connectivity to a wide range of field devices in industrial environments.

With built-in support for parameter backup and restore, automatic baud rate detection, and IEC noise immunity, the GRT1-DRT ensures dependable operation in factory automation, process control, and distributed systems. It features DIN rail mounting and is designed for seamless integration into Omron’s modular GRT1 platform.

Technical Specifications

Model: GRT1DRT
Series: GRT1 Slice I/O
Unit Type: DeviceNet Communication Master Unit
Supported Network: DeviceNet
Max. I/O Points: 1024 points (128 bytes total for input/output)
Max. Slice I/O Units: 64 units
Connection Layout: Horizontal, 2 m max. extension (with Turnback Cables)
I/O Data Capacity per Unit: 0, 2, or 4 bits; or 0 to 16 words (in word increments)
Status Flag Allocation: 1 word for unit-level diagnostics
Backup/Restore Capacity: 2 KB per unit

Electrical Specifications

• Network Power Supply Voltage: 11 to 25 VDC (supplied from DeviceNet connector)
• Unit Power Supply Voltage: 20.4 to 26.4 VDC (nominal 24 VDC ±10%)
• I/O Power Supply Voltage: 20.4 to 26.4 VDC (nominal 24 VDC ±10%)
• Power Supply per Block: 80 W max.
• I/O Power Supply Current: 4 A max.
• Dielectric Strength: 500 VAC (between isolated circuits)
• Insulation Resistance: 20 MΩ min (between isolated circuits)

Communication Interfaces

• Network Type: DeviceNet
• Connector: 1 × DeviceNet open screw connector (supports multi-drop)
• Automatic Baud Rate Detection: Supported
• Message Communications: Supported
• Parameter Restore/Backup: Built-in per I/O unit (2 KB each)
• Status Monitoring: Includes 1 word status flag per unit

Mechanical Specifications

• Mounting: DIN rail (35 mm)
• Unit Dimensions: Compact slice-style form
• Weight: 137 g
• Terminals:
  • 2 × I/O power supply terminals
  • 2 × unit power supply terminals
• Enclosure: Modular industrial housing

Environmental Specifications

• Operating Temperature: –10°C to 55°C (no icing or condensation)
• Storage Temperature: –25°C to 65°C
• Operating Humidity: 25% to 85% RH (non-condensing)
• Ambient Atmosphere: Free from corrosive gases
• Vibration Resistance:
  • 10–60 Hz: 0.7 mm double amplitude
  • 60–150 Hz: 50 m/s²
• Shock Resistance: 150 m/s²
• Noise Immunity: IEC 61000-4-4, 2 kV (power line)
• IP Rating: Typically IP20 (when installed in enclosure)

Compliance & Certifications

• CE Marked: Yes
• RoHS Compliant: Yes
• UL / cUL Listed: Yes
• Standards: IEC61010, IEC61131-2, IEC61000

Key Features & Benefits

✅ Supports 64 Slice I/O Units. Expandable to 1024 I/O points for scalable distributed control.

✅ Built-in Backup & Restore. 2 KB non-volatile memory per unit for parameter management.

✅ DeviceNet Communication. High-speed open network integration with automatic baud detection.

✅ Compact DIN-Rail Design. Space-saving modular architecture for panel mounting.

✅ Industrial Durability. Vibration, shock, and noise tested for harsh environments.

📦 Order the Omron GRT1-DRT from Drive Outlet Megastore

The GRT1-DRT delivers a robust and flexible solution for integrating distributed slice I/O systems on DeviceNet networks. Perfect for modular machines, process automation, and factory systems requiring reliable field connectivity and high I/O density.

Check stock now or request a quote.

Modular expansion. Proven performance. Omron precision. — Drive Outlet Megastore