1756-OF8 | Allen Bradley 1756 ControlLogix Analog Output Module

Overview

• Model: 1756-OF8
• Outputs: 8 voltage or current
• Output range: 10V; 0 20 mA
• Resolution: 15 bits across 21 mA - 650 nA/bit; 15 bits across 10.4V - 320 V/bit
• Current draw @ 5.1V: 150 mA
• Current draw @ 24V: 210 mA
• Total backplane power: 5.8 W
• Power dissipation, max: 4.92 W, 8 channel current
• Thermal dissipation: 16.78 BTU/hr
• Open circuit detection: Current output only (Output must be set to >0.1 mA)
• Overvoltage protection: 24V DC
• Short circuit protection: Electronically current limited to 21 mA or less
• Drive capability: Voltage: > 2000; Current: 0 750
• Settling time: < 2 ms to 95% of final value with resistive loads
• Calibrated accuracy 25 ?C (77 ?F): Better than 0.05% of range from 4 21 mA, -10.4 10.4V
• Calibration interval: 12 months typical
• Offset drift: 50 V/?C typical (Voltage mode); 0.1 A/?C typical (Current mode)
• Gain drift with temperature: Voltage: 25 ppm/?C max; Current: 50 ppm/?C max
• Module error: Voltage: 0.15% of range; Current: 0.3% of range
• Module input scan time, min: 12 ms floating point; 8 ms integer
• Data format: Integer mode (left justified, 2s complement) IEEE 32-bit floating point
• Module conversion method: R-Ladder DAC, monotonicity with no missing codes
• Isolation voltage: 250V (continuous), reinforced insulation type, output channels-to-backplane; No isolation between individual output channels; Routine tested at 1350V AC for 2 s
• Module keying: Electronic, software configurable
• RTB keying: User-defined mechanical
• Slot width: 1
• Wire category: 2¹
• North American temperature code: T4A
• IEC temperature code: T4
• Enclosure type: None (open-style)