The Allen-Bradley 1769-OF4 module is an analog output module that produces voltage/current signals. This module has Four (4) single-ended outputs, with an output voltage range of 0 to 10 volts and 0-20 mA. The modules resolution is 15-bit unipolar/bipolar with a draw current of 120 mA at 5.1 Volts. The module’s maximum heat dissipation rating of 2.86 Watts and a 3.8-millisecond interruption-enabled maximum conversion rate. The 1769-OF4 module has a 2.9-millisecond step response rating of 63% and a resistivity load of 0 to 600 Ohms of current or 1 KOhms; or greater of voltage. The 1769-OF4 has a maximum inductive load of 0.1 mH of current load and 1.0 µF of voltage load. It has an accuracy margin of 0.5% (full scale at 25 degrees Celsius), and an output ripple of +/- 0.05% at 0 to 50 kilohertz.
This analog output module has an accuracy drift of +/- 0.0086% (per degree Celsius) and a non-linearity margin of +/- 0.05%. It also has a module error margin (at 0 to 60 degrees Celsius) of +/-0.8%, and repeatability of +/-0.05%. The 1769-OF4 module has an output impedance of <1 MOhm for voltage output and >1 MOhms for current output. The 1769-OF4 module has current circuit protection of up to 40 mA and protection against excess voltage. It has a power up/power down output response of less than 1 millisecond and operational voltage rated at 30 Volts DC. It has a weight of 280 G (0.61 pounds) and module dimensions of 118 by 35 by 87 millimeters (4.65 by 1.38 by 3.43 inches).

The 1769-OF4 is an Allen-Bradley Programmable Automation Controller (PAC) component specifically used as analog output module of MicroLogix 1500 and CompactLogix controller. This analog output module is designed to provide to drive modulating Final Control Elements (FCE) of a particular control loop such as modulating valves, Variable Frequency Drive (VFD), Dampers, Louvers and indicating devices such as indicators, recorders, data loggers and other devices.

This analog output has an embedded Four (4) single-ended output channels. Each channel are individually configurable for signal types such as 0-20mA and 4-20 mA Current signals and ±10V dc, 0 to 10V dc, 0 to 5V dc, 1 to 5Vdc Voltage signals. This module has an output resolution of 15-bit configurable for unipolar and bipolar operation. The analog signal may be used or assigned as the Control Output (CO) of a Proportional + Integral + Derivative (PID) controller or retransmit a signal to a receiving element such as indicators, recorders, data loggers, converters and other similar instruments. The analog output signal may also be initiated via a Human Machine Interface (HMI), Supervisory Control And Data Acquisition (SCADA), Distributed Control Systems (DCS) and other computer based or electrical based manual loaders.

The 1769-OF4 supports installation with a MicroLogix 1500 controller or CompactLogix controller however, the module instance is limited according to the power supply distance rating. For the 1769-OF4, the required distance is Eight (8). Should there be more than 8 modules are needed, another power supply may be installed in the CompactLogix assembly to qualify other modules.