1756-OF6VI Allen-Bradley ControlLogix Isolated Analog Output Module

Product Overview

The Allen-Bradley 1756-OF6VI is a high-performance analog output module. It belongs to the ControlLogix platform. This module provides six individually isolated voltage output channels. Each channel delivers a +/-10 VDC signal. It uses a 14-bit resolution across 21V. This ensures precise control in demanding industrial applications. The module supports both integer and floating-point data formats. It also features on-board data alarming and scaling to engineering units. This makes it a versatile choice for complex automation tasks.

Application Scenarios

This module is ideal for process control applications. It can control valves, actuators, and drives. Engineers use it in manufacturing plants and refineries. It works well in distributed I/O architectures. The isolated channels prevent ground loops. This ensures signal integrity in noisy environments. The 1756-OF6VI is suitable for both local and remote chassis configurations.

Technical Specifications

The module has six voltage output points. Its output range is +/-10.5V overall. The signal resolution is 14 bits across 21V. It draws 175mA at 24V DC from the backplane. It draws 250mA at 5.1V DC. The maximum backplane power is 5.5W. Thermal dissipation is 16.54 BTU/hr. Power dissipation is 4.85W. The output impedance is 1 Ohm. It offers overvoltage protection at 24V DC. It has electronic current-limited short-circuit protection. The drive capability is 10mA loads. The settling time is less than 2ms. Calibration accuracy is better than 0.1% of range. The module requires re-calibration every 6 months. It has a maximum gain drift of 80 ppm/ deg C. The offset drift is 60 V per deg. C. The module error margin is 0.5%. The module scan time is 25ms for floating point. It is 10ms for integer. Isolation voltage is 250V with basic insulation. It is tested at 1350V AC for 2s. The temperature code is T4A for North America. It also has an IEC T4 code. The functional temperature range is 0 to 60 deg. C. It operates at 5-95% non-condensing humidity. It withstands 30G operational shock. It handles 2G vibration at 10-500Hz.

Installation & Maintenance Guide

Install the module into any available slot. Use a 1756-TBNH or 1756-TBSH terminal block. Ensure the chassis power is off before installation. Secure the module with the locking mechanism. Wire the voltage outputs to the correct terminals. Use shielded cables for noise reduction. Calibrate the module every six months for best accuracy. Keep the enclosure free from dust and moisture. Check connections periodically for tightness.

Packing List

The package includes one Allen-Bradley 1756-OF6VI module. It does not include a terminal block. The terminal block is ordered separately. Please order the 1756-TBNH or 1756-TBSH. The module comes with a documentation sheet.