TC-FOR081 Honeywell Series 9000 8-Channel Relay Output Module

TC-FOR081 Relay Digital Output Module

The Honeywell TC-FOR081 brings eight isolated Form A electromechanical relays to Series C I/O racks. Each contact switches real loads: 2A at 240V ac, 0.5A at 48V dc, 0.25A at 125V dc. Contacts stay open until logic commands them closed. A snubber circuit limits off-state leakage to 1mA. The module suits panels that mix ac and dc field devices on one card. Relay isolation reaches 2550V dc between contact sets and logic. Engineers pick this card when they need hard contact switching, not solid-state output. Inrush rating hits 15A for lamp and motor loads. Contact life reaches 100,000 operations at rated load. Logic-side response takes 8ms to energize and 26ms to release. The card fits 46mm of rail width, so dense cabinets gain space. Use it for valve pilots, contactor coils, and alarm circuits in legacy Honeywell systems.

Technical Data

• Brand: Honeywell
• Model: TC-FOR081
• Series: Series C I/O, relay output family
• Outputs: 8 Form A isolated relays, normally open
• Off-state leakage: 1mA through snubber
• Voltage range: 5-30V dc at 2A; 48V dc at 0.5A; 125V dc at 0.25A; 125V ac at 2A; 240V ac at 2A
• Inductive rating: 2A at 5-30V dc, L/R 7ms; 15A make at 125/240V ac, PF 0.4
• Power rating: 480W max at 240V ac resistive; 60W max at 30V dc resistive
• Isolation: 2550V dc for 1s between contact sets, load to logic, load to 24V dc supply; 850V dc supply to logic
• Signal delay: 8ms OFF to ON; 26ms ON to OFF
• Flexbus current: 69mA at 5V dc
• Power dissipation: 5.5W max; 18.8 BTU/hr max
• Indicators: 8 yellow field-side LEDs, logic driven
• Contact resistance: 30 milliohm initial
• Switching frequency: 0.3Hz at rated load
• Bounce time: 1.2ms mean
• Minimum load: 100 microamp at 100mV dc
• Contact life: 100,000 operations minimum at rated loads
• Inrush: 15A max
• Fusing: use fused base with 3.0A Littelfuse 239003; outputs not fused
• External supply: 24V dc nominal, 19.2-31.2V dc range, 125mA max
• Dimensions: 46 x 94 x 53 mm
• Operating temperature: 0 to 55 C
• Storage temperature: -40 to 85 C
• Humidity: 5 to 95% non-condensing
• Shock: 12g operating, 50g non-operating
• Vibration: 2g at 10-500Hz per IEC 68-2-6
• Wire size: 12 AWG stranded max, 1.2mm insulation max

Performance Profile

• Measurement range: 5V dc to 240V ac load switching
• Frequency response: 0.3Hz switching at rated load
• Sensitivity: picks up loads as low as 100 microamp at 100mV dc
• Linearity: stable contact resistance at 30 milliohm initial
• Resolution: 8 independent isolated contact pairs
• Temperature range: 0 to 55 C operating
• Environmental tolerance: 12g shock, 2g vibration, 95% RH
• Interference resistance: 2550V dc contact-to-logic isolation blocks field noise

Where It Fits

• Legacy Honeywell Series C racks with relay output slots
• Panels mixing ac solenoids and dc pilot valves
• Systems needing dry contact switching instead of solid-state output
• Contactor coil drive circuits up to 2A
• Alarm and annunciator lamp circuits with 15A inrush
• Retrofit jobs where the original card is obsolete

Installation Notes

• Clip the card onto DIN rail in a Series C rack slot
• Wire 12 AWG stranded max; keep insulation at 1.2mm
• Feed 24V dc field supply in the 19.2-31.2V dc window
• Add a fused terminal base with 3.0A Littelfuse 239003 if protection is required
• Outputs are not fused inside the module
• Check the 8 yellow LEDs after power-up
• Keep ac and dc field cables separated to cut crosstalk

Setup and Service

• No calibration needed; relays are factory set
• Yellow LEDs show field-side state for fast fault tracing
• Contact resistance stays low over the 100,000-operation life
• Swap the card as a unit if a contact welds
• Inspect terminal torque at planned shutdowns

Compatibility

• Fits Honeywell Series C I/O racks with relay output slots
• Drives contactors, solenoids, valves, and lamps
• Works with PLC and DCS architectures accepting dry contact output
• Replaces failed or obsolete relay output cards in the same family
• We confirm rack and firmware fit before every shipment

Certification and Standards

• Vibration tested to IEC 68-2-6
• Isolation tested at 2550V dc for 1s
• Built for Class I Division 2 style panel environments
• Contact life rated to 100,000 operations

What Ships With Your Order

• 1 x Honeywell TC-FOR081 relay output module
• Anti-static bag and foam carton
• Test report and warranty card
• Tracking number within 24-28 hours

Warranty and Delivery

• 12-month warranty on every module
• Dispatch in 24-28 hours after order confirmation
• Shipping by FedEx, UPS, and DHL
• Export packing meets anti-static and shock rules

Oiltech Controls Review

• More than 15 years sourcing industrial automation spare parts
• Worldwide shipment support with tracked carriers
• Tested industrial surplus and refurbished options
• 12-month warranty backed by real engineers
• Technical verification before every shipment
• Support for obsolete control systems others drop

Send inquiries to info@oiltechcontrols.com. Reach our team on WhatsApp at +86 158 8020 0923.

Oiltech Controls’s Insight: Which Equipment Uses It

• Water and wastewater plants with legacy Honeywell panels
• Packaging lines running contactor and solenoid banks
• Power plants with annunciator and alarm circuits
• Chemical plants needing dry contact isolation
• OEM machines built on Series C I/O racks

FAQ

Q: Can the TC-FOR081 switch 240V ac directly?

A: Yes. Each Form A contact handles 2A at 240V ac resistive. Use the fused base for protection.

Q: My original relay card is obsolete. Will this drop in?

A: It fits Series C racks with relay output slots. Send us your rack model and we verify fit before shipping.

Q: How do I protect the outputs?

A: The module has no internal fusing. Add a fused terminal base with a 3.0A Littelfuse 239003.

Q: What load types cause early contact wear?

A: High inrush lamps and inductive loads wear contacts faster. Stay under 15A inrush and add snubbers where possible.

Q: How do I choose between this card and a solid-state output?

A: Pick the relay card for dry contact isolation and mixed ac/dc loads. Pick solid-state for high cycle rates above 0.3Hz.

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