RLY relay modules were frequently added to the UNT controller's binary outputs. You can reuse RLY relay modules when you replace the UNT with an FX-PCG. Each RLY relay module must be wired to one FX-PCG binary or to one configurable output (configured for binary output mode). If both relays on one RLY relay module are used, the FX-PCG controller outputs must be configured identically. Alternatively, you can replace RLY relay modules with FX-PCX models with onboard relay outputs.
Figure 1. Connecting RLY Relay Modules to FX-PCG Controller
