1756-OF8IHK I/O Module Allen-Bradley

Allen-Bradley 1756-OF8IHK Conformal Coated HART Output Module

Core Technical Specifications

• Brand & Manufacturer: Allen Bradley
• Series: ControlLogix
• Model Number: 1756-OF8IHK
• Module Type: Conformal Coated HART I/O Module
• Channels: 8 Isolated Differential Outputs
• HART Modems: 1 dedicated modem per channel
• Output Signal Range: 0-20 mA and 4-20 mA
• Resolution: 15 bits across 24 mA
• Overvoltage Protection: +/- 24 Volts DC

Key Features & Protection

• Conformal Coating: Provides protection against moisture, dust, and corrosive atmospheres.
• Environmental Testing: Tested per ASTM B845-97 Method G and IEC 60068-2-60 (20-day exposure).
• Isolation Voltage: 250V AC isolation rating.
• HART Compatibility: Supports HART 6 and 7 protocols.
• Module Scan Time: Estimated 1 second with HART enabled.
• Network Compatibility: Works in local or remote chassis via ControlNet or EtherNet/IP.

Frequently Asked Questions (FAQ)

• Q: What is the benefit of the conformal coating on the 1756-OF8IHK?
  A: The coating protects the module's circuitry from moisture, dust, and corrosive gases, extending its life in harsh environments.
• Q: How does this module differ from the standard 1756-OF8IH?
  A: The 1756-OF8IHK adds a protective conformal coating and specific environmental durability testing for tougher operating conditions.
• Q: What HART protocols are supported?
  A: This module supports HART 6 and HART 7 communication protocols.
• Q: What is needed to wire field devices to this module?
  A: You need to purchase a separate removable terminal block or a Bulletin 1492 wiring interface module for field connections.
• Q: Is the 1756-OF8IHK module in stock and ready to ship?
  A: Yes, we maintain stock of the 1756-OF8IHK for prompt order fulfillment and shipping.