YOKOGAWA NFDV561-P00 Digital Output Module

The YOKOGAWA NFDV561-P00, also cataloged as the NFDV561 Digital Output Cards, operates as a dedicated hardware component for high-density discrete signal actuation within STARDOM control networks. This 64-channel module utilizes sink-type transistor switching circuits to drive relays, solenoids, and external field indicators. The output switching stages process binary command signals from the system controller with response latencies under 3 ms.

Hardware Specifications

Channel Isolation & Fieldbus Connectivity

Galvanic isolation barriers separate internal backplane microprocessors from field-side voltage fluctuations across all 64 output channels. The solid-state sink driver circuits execute continuous logic switching without mechanical wear. Operating across industrial Ethernet and STARDOM system buses, the module exchanges status data alongside 4-20 mA HART loop protocol diagnostics and FOUNDATION Fieldbus field instruments to maintain real-time process visibility across engineering workstations.

Frequently Asked Questions

Q: What happens to the transistor outputs if logic power to the module is lost?

A: The sink-type transistor stages automatically default to an open off-state upon loss of backplane 5 VDC or 24 VDC auxiliary power.

Q: Does the NFDV561-P00 support hot-swapping under live backplane power?

A: Yes. Technicians can replace the module under power within a powered STARDOM node without interrupting backplane bus communication or neighboring I/O modules.

Q: Can inductive loads like solenoids be connected directly to the sink transistor channels?

A: Yes. However, field technicians must install external freewheel diodes across inductive DC loads to suppress voltage spikes during transistor turn-off.

Field Installation Guidelines

Mount the module into the designated I/O slot on the STARDOM base unit until the retaining clip locks into position. Route all 64 output conductors using multi-conductor shielded cables wired to terminal blocks. Ensure field load polarity matches the sink configuration, connecting the positive supply to the field load and the negative side to the module channel terminal. Route signal lines through dedicated low-voltage wiring duct separate from high-voltage AC feeders and motor leads. Connect the cable shield drain wire directly to a single protective earth point on the cabinet copper busbar.