1771-OF05

The Allen-Bradley 1771-OF05 is an Analog Output Module with 4 – 20mA current range. It is a 12-bit plug-in intelligent module that produces application-dependent analog signals at their outputs. It contains an onboard processor and memory which it repeatedly scans to perform DA conversions for analog devices. For single transfer, the 16-bit word memory consists of 12-bits of output signal and 4-channel bits which are not used in block transfer. The output signal can be user-selected in 12-digit binary or 3-digit BCD. It can be interfaced with many programmable controllers such as the Mini-PLC-2, Mini-PLC-2/15, PLC-2/20, PLC-2/30, and the PLC 3. The 1771-OF05 is a two-slot module with four single-ended output channels. It can be used as a stand-alone unit or with output expanders to increase the output points of the system. It includes a 12-terminal field wiring arm 1771-WB for module replacement without disconnecting the wires. It requires a backplane current of 1.4A at 5V and a separate external power supply also. It requires two adjacent slots for installation in a 1771 I/O chassis with keying bands between 2-4 and 6-8 for the left connector and 4-6 and 32-34 for the right connector. The 1771-OF05 module possesses a red fault LED at the front of the module and it is normally OFF. If a fault occurs, it alternately flashes ON and OFF and it remains continuously ON in the run mode. It has 1500V of optoelectrical isolation which protects the system from overvoltage situation.