Allen-Bradley 1756-OF4 Analog Output Module

1756-OF4 Allen Bradley Analog Output Module

Part Number: 1756-OF4

Model: Analog Output Module

Manufacturer: Allen Bradley

Condition: New & Original in Factory Packing

Factory Warranty: 12 Months

Technical Specifications

Model: 1756-OF4

Outputs: 4 voltage or current

Output range: ±10V; 4...20 mA

Resolution: Voltage: 15 bits across 10.5V, 320 ?V/bit; Current: 15 bits across 21mA, 650 nA/bit

Current draw @ 5.1V: 150 mA

Current draw @ 24V: 210 mA

Total backplane power: 5.8 W

Power dissipation, max: 3.25 W, 4 channel current

Thermal dissipation: 10.91 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 O; Current: 0·50 O

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; 100 nA/°C

Gain drift with temperature: Voltage: 25 ppm/°C, 520 °V/°C; Current: 50 ppm/°C, 1050 °A/°C

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)