TC-ODA161 Honeywell 16-Channel Discrete Output Module 74-265 VAC, 2A

TC-ODA161 Honeywell 16-Point AC Discrete Output Module – High Density, AC Switching with Per-Point Control

The Honeywell TC-ODA161 packs 16 discrete outputs into a single module for 120/220 VAC field devices. Each group of 4 points shares a common, while every point supports 2 A at 30°C or 1 A at 60°C. Outputs tolerate 74–265 VAC, 47–63 Hz, with 20 A surge current for 43 ms repeatable every 2 seconds. Engineers get zero-crossing inhibit (60 V peak), channel-to-channel isolation tested at 2546 VDC, and per-point configurable fault states – Hold Last State, ON, or OFF.

Technical Data – AC Output Module (16 Points, 4 per Common)

• Output voltage range: 74–265 VAC, 47–63 Hz
• Current rating per point: 2 A max @ 30°C, 1 A max @ 60°C
• Current rating per module: 5 A max @ 30°C, 4 A max @ 60°C
• Surge current: 20 A for 43 ms each, repeatable every 2 s @ 60°C
• Minimum load: 10 mA per output
• On-state voltage drop: 1.5 V peak @ 2 A; 6 V peak @ load <50 mA
• Off-state leakage: 3 mA max per point
• Output delay: 1 ms plus 1/2 cycle max (off→on and on→off)
• Fault states per point: Hold Last State, ON, or OFF (also in program mode)
• Power dissipation: 6.5 W
• Isolation: channel-to-channel and user-to-system, both 100% tested at 2546 VDC for 1 s
• Maximum inhibit voltage: zero crossing 60 V peak
• Connection: TC-TBNH 20-position terminal block

Oiltech Controls Review – Built for Legacy and New AC Loads

• Suits relay, contactor, and solenoid switching where 16 points per module save panel space.
• Zero-crossing inhibit reduces inrush stress on AC coils and resistive heaters.
• Per-point fault states let engineers choose safe shutdown or hold-last-state per load.
• Channel-to-channel isolation supports mixed 120 VAC and 220 VAC loads on one module.
• Best for Honeywell I/O platforms using TC-TBNH terminal blocks and 4-point common wiring.
• Recommended for plants keeping obsolete control systems running with verified spares.

Oiltech Controls’s Insight – Wiring and Load Planning

• Derate above 30°C: use 1 A per point at 60°C to avoid thermal drift.
• Keep load current above 10 mA per point; low-current AC relays may need bleeder resistors.
• Respect 5 A per module at 30°C – split high-current groups across commons.
• Plan 20 A surge events every 2 s maximum at 60°C for inductive loads.
• Verify inhibit voltage 60 V peak at zero crossing for noise-sensitive circuits.

Compatible Equipment and Applications

• Honeywell I/O racks accepting 16-point discrete output modules.
• AC solenoid valve banks, motor starters, and contactor coils.
• Heater and resistive load switching up to 2 A per point.
• Mixed-voltage panels using channel-to-channel isolation.
• Retrofit projects where TC-TBNH terminal blocks are already installed.

Why Buy From Oiltech Controls?

• Over 15 years sourcing and supporting industrial automation spare parts.
• Worldwide shipping via FedEx, UPS, and DHL – dispatch in 24–28 hours.
• Tested surplus and refurbished modules – function-checked before listing.
• 12-month warranty on all supplied units.
• Technical verification before shipment – we confirm firmware, revision, and terminal block compatibility.
• Long-term support for obsolete control systems – keep aging lines productive.

Send part numbers and quantity to info@oiltechcontrols.com or reach our engineers on WhatsApp at +86 158 8020 0923 for lead time and test reports.

FAQ – Field Experience and Selection Guidance

• How do I choose between TC-ODA161 and a DC output module for contactor coils?
  Use the AC module when coils are 120/220 VAC and wiring already runs to AC panels. DC coils need a DC output module. The TC-ODA161 saves interposing relays and keeps 16 points in one slot.
• Can I mix 120 VAC and 220 VAC loads on the same module?
  Yes. Channel-to-channel isolation is tested at 2546 VDC, so different AC voltages can share the module. Keep each 4-point group on the same common and respect per-module current limits.
• What happens when a point is configured to Hold Last State?
  The output keeps its last commanded state after a fault or mode change. This suits processes where an unexpected OFF is worse than staying energized. For safety-critical loads, select OFF instead.
• Why does my low-current AC relay chatter or fail to switch?
  Check the 10 mA minimum load per point. Below that, off-state leakage and holding current may misbehave. Add a bleeder resistor across the relay coil or use a higher-current load.
• How do I verify a surplus TC-ODA161 before installation?
  Ask for a test report covering all 16 outputs, isolation check, and fault-state configuration. Oiltech Controls tests each module and ships with a 12-month warranty. Confirm the TC-TBNH terminal block is included or on hand.

Warranty, Lead Time, and Shipping

• 12-month warranty against functional defects under normal use.
• Dispatch within 24–28 hours after order confirmation.
• Shipping by FedEx, UPS, or DHL with tracking.
• Packing list: 1 × TC-ODA161 module, anti-static bag, protective carton.
• Terminal block TC-TBNH ordered separately unless stated.

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