Honeywell CV-DINA-DO16-6A – DIN-rail 16?channel Digital Output Module for Switching Loads up to 6 A

The Honeywell CV-DINA-DO16-6A is a compact, DIN-rail mounted digital output module designed for applications that need reliable switching of field devices like solenoid valves, contactor coils, lamps, and small actuators. From my experience, the “DO16-6A” designation typically indicates 16 discrete outputs with relay contacts rated up to 6 A (resistive), which is handy when you don’t want to add interposing relays for medium-duty loads.

It’s well-suited for panel builders and OEMs who prefer clean wiring and solid isolation between control logic and field circuits. You might notice that this kind of module simplifies mixed AC/DC output panels and, in many cases, shortens commissioning time.

• 16 isolated relay outputs – Each output is a dry contact designed for switching external loads without exposing the controller’s low-voltage side.

• Up to 6 A per channel (resistive) – Typically supports 250 VAC or 30 VDC loads; ideal for solenoids, pilot lights, and contactor coils. Always verify inductive derating.

• DIN-rail form factor – Slim, panel-friendly housing that fits standard EN 60715 rails for quick installation and service.

• Clear channel labeling – Terminal markers and status indication (where fitted) speed up I/O checks during FAT/SAT.

• Galvanic isolation – Reduces noise coupling and improves reliability when switching mixed voltages.

• Field-friendly terminals – Screw terminals sized for typical control cabinet wiring, making retrofits straightforward.

• Honeywell ecosystem compatibility – Designed for the CV-series DIN-rail I/O architecture, ensuring smooth integration with Honeywell controllers in most cases.

Note: Ratings above reflect common Honeywell relay DO module conventions for “DO16-6A”. For inductive loads (solenoids, relays), apply proper suppression and observe derating.

• Machinery and OEM panels – Switching contactors, brakes, clutches, and stack lights without extra interposing relays in many cases.

• Water/Wastewater – Solenoid valves, dosing pumps (pilot control), and valve position indication circuits.

• HVAC & building services – AHU/damper actuation, pump starters, and lighting zones where relay isolation is preferred.

• Process skids & utilities – Skid-mounted controls requiring mixed AC/DC output switching with clear segregation.

• Material handling – Conveyors, diverters, and beacon alarms that benefit from 6 A contact capability.

A maintenance lead recently told me, “The 16-channel relay card gave us enough headroom for our 230 VAC solenoids—no extra relay bank, less wiring, fewer points of failure.” That seems to be the typical feedback with 6 A channels.

• Reduced panel complexity – Higher current relay contacts often remove the need for interposing relays, saving space and labor.

• Robust isolation – Electrical separation between logic and field-side improves resilience against noise and transients.

• Honeywell integration – Consistent wiring practices, diagnostics behavior, and lifecycle support across the CV-series stack.

• Lower total cost – Fewer components to purchase and maintain, plus quicker FAT/SAT due to straightforward point testing.

• Serviceability – DIN-rail mount with clearly labeled terminals for faster troubleshooting and replacements.

• Cabinet environment – Mount on EN 60715 DIN rail in a clean, dry panel. Provide ventilation; avoid hotspots near VFDs or soft starters.

• Wiring – Use appropriately rated copper conductors (commonly 0.5–2.5 mm2). Separate AC and DC wiring. Provide per-channel fusing or common fusing as required by your risk assessment.

• Inductive loads – Fit RC snubbers (AC) or flyback diodes (DC) across coils to reduce contact wear and EMI.

• Grounding & segregation – Keep control grounds clean; route signal and power cables separately to minimize noise coupling.

• Routine checks – Periodically tighten terminals, inspect relays for contact wear (signs of heating), and verify output operation during scheduled PMs.

• Firmware/config – If the module participates in system diagnostics, keep controller firmware and I/O configuration aligned with the vendor-specified versions.

• Safety – De-energize circuits before servicing. Verify lockout/tagout. Confirm that contact ratings match the load category (AC-1/AC-15, DC-1/DC-13), especially for inductive duties.

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• Certifications – Honeywell DIN-rail I/O modules are typically CE and RoHS compliant; many variants also carry UL/cUL listings. Check the specific datasheet for the exact approvals tied to CV-DINA-DO16-6A.

• Manufacturing quality – Built under Honeywell’s quality system (commonly ISO 9001) with traceable components and revision control.

• Warranty – Standard Honeywell limited warranty applies (often 12 months from shipment), with extended service options available through authorized channels.

• Support – Access to Honeywell’s technical assistance, lifecycle planning, and spare parts stocking for long-term availability.

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