Allen-Bradley 1746-NO4V 4-Channel Analog Output Module

Allen-Bradley 1746-NO4V is a four-channel analog voltage output module for the SLC 500 PLC family, providing four -10 to +10 V DC outputs that translate the controller's setpoints into field signals. All four outputs share a common reference and are not individually isolated, which simplifies wiring but requires careful grounding when driving multiple devices from the same module. The NO4V mounts in an SLC 500 rack in an open chassis configuration and is powered from the backplane, with a requirement for both 5 V DC and 24 V DC power supplied by the backplane or an external 24 V DC source. Rockwell classifies the NO4V as part of the 1746 analog output family and lists it as Series A, indicating its role as a direct replacement for earlier analog output cards; typical applications include driving analog actuators such as valves and other field devices that require a precise voltage signal.