Product Overview
Honeywell TC-FOD321 is a 32-channel 24 Vdc sourcing digital output module. It drives industrial loads with high current capacity. The module suits DIN-rail mounting in control cabinets. Two groups of 16 channels share current budgets. Channels stay non-isolated within each group. This design fits compact, high-density output panels. The module works with Honeywell Series C I/O systems. Engineers use it for discrete control of relays, solenoids, and lamps. Each channel delivers up to 500 mA. Group totals reach 6A and 8A. The unit tolerates 10 to 31.2 Vdc field supply. Response times stay under 1 ms. This module fits fast machine sequencing and interlock logic.
Technical Specifications
| Brand | Honeywell |
| Model | TC-FOD321 |
| Series | Series C I/O |
| Module Type | 32 digital output, sourcing |
| Channels | 32 (2 groups of 16), non-isolated within groups |
| Output Current | 14A max per channel; 6A total for channels 0-15; 8A total for channels 16-31 |
| ON-State Voltage | 10 Vdc min, 24 Vdc nominal, 31.2 Vdc max |
| ON-State Current | 1 mA min, 500 mA max per channel |
| ON-State Voltage Drop | 0.5 Vdc max |
| OFF-State Leakage | 0.5 mA max |
| Surge Current | 2A for 50 ms, repeatable every 2 s |
| Isolation Voltage | 2121 Vdc for 1 s, user to system; no isolation between channels |
| Response Time | OFF to ON 0.5 ms max; ON to OFF 1.0 ms max |
| Flexbus Current | 80 mA max |
| Power Dissipation | 5.3 W at 31.2 Vdc |
| Thermal Dissipation | 18.1 BTU/hr at 31.2 Vdc |
| Indicators | 32 yellow channel status LEDs |
| External dc Power | 10 to 31.2 Vdc (5% ac ripple); 219 mA at 24 Vdc, 104 mA at 10 Vdc, 278 mA at 31.2 Vdc |
| Dimensions (HxWxD) | 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in) |
| Operating Temperature | 0 to 55 C (32 to 131 F) |
| Storage Temperature | -40 to 85 C (-40 to 185 F) |
| Humidity | 5 to 95% non-condensing |
| Shock | 30g operating, 50g non-operating |
| Vibration | 5g at 10-500 Hz per IEC 68-2-6 |
| Wire Size | 12 AWG (4 mm2) stranded max; 1.2 mm insulation max; 75C or higher rating |
| Agency Certification | cULus Groups A, B, C, D; Class I Division 2; Class I Zone 2 Group IIC |
Key Performance Data
- Measurement range: field supply 10 to 31.2 Vdc
- Frequency response: switching delay under 1 ms suits high-speed discrete logic
- Sensitivity: 1 mA minimum ON current per channel
- Linearity: stable sourcing output across the full voltage band
- Resolution: 32 independent output points in two groups
- Temperature range: 0 to 55 C operating, -40 to 85 C storage
- Environmental tolerance: 30g shock, 5g vibration, 5 to 95% RH
- Interference resistance: 2121 Vdc isolation test, cULus and ATEX zone certifications
Installation Guide
Mount the module on a standard DIN rail inside the cabinet. Keep clearance for airflow and wiring. Use 12 AWG stranded wire or smaller. Strip insulation to 1.2 mm maximum. Tighten terminals to firm contact. Connect field power in the 10 to 31.2 Vdc range. Check polarity before power-up. Confirm group current budgets: 6A for channels 0-15, 8A for channels 16-31. Route output cables away from noisy ac lines. Verify each channel LED after energizing.
Commissioning and Maintenance
Commissioning is fast. The 32 yellow LEDs show channel state at a glance. Technicians trace faults without a meter. No calibration is needed. Keep the cabinet filter clean. Check terminal torque at scheduled shutdowns. Replace the module as a unit if a group fails. Spare modules swap in minutes on the rail.
Compatibility
The TC-FOD321 fits Honeywell Series C I/O racks. It works with standard 24 Vdc field devices. Loads include relays, contactors, solenoids, and indicator lamps. The module suits PLC and DCS architectures that accept sourcing outputs. It replaces failed units in legacy Honeywell systems. Our team verifies firmware and rack compatibility before shipment.
Certifications
- cULus Groups A, B, C, D certified
- Class I Division 2 certified
- Class I Zone 2 Group IIC certified
- Vibration tested to IEC 68-2-6
Packing List
- 1 x Honeywell TC-FOD321 module
- Anti-static protective bag
- Protective foam carton
- Test report and warranty card
Warranty and Shipping
Every module carries a 12-month warranty. We ship by FedEx, UPS, and DHL. Tracking numbers go out within one business day. Export packing meets anti-static and shock standards.
Typical Applications
- Discrete valve and solenoid control
- Relay and contactor banks
- Packaging and assembly line outputs
- Panel indicator and alarm lamps
- Legacy Honeywell system upgrades
- Water treatment and utility plants
Diagnostic Capabilities
Each channel has a yellow status LED. LEDs speed fault finding during startup and runtime. The module reports channel state directly in the field. Group current limits protect wiring. Surge tolerance of 2A for 50 ms handles inductive kickback. Technicians isolate faults per group of 16 channels.
Why Buy From Oiltech Controls?
- More than 15 years in industrial automation spare parts
- Worldwide shipping through FedEx, UPS, and DHL
- Tested surplus and refurbished options in stock
- 12-month warranty on every module
- Technical verification before every shipment
- Support for obsolete and legacy control systems
Questions? Email us at info@oiltechcontrols.com or reach us on WhatsApp at +86 158 8020 0923. Our engineers reply fast.
FAQ
Q: Is the TC-FOD321 sourcing or sinking?
A: It is a sourcing output module. It supplies positive voltage to loads.
Q: Are the 32 channels isolated?
A: No. Channels are non-isolated within each group of 16. Field wiring stays isolated from the system at 2121 Vdc.
Q: What is the maximum current per channel?
A: 500 mA per channel. Group totals are 6A and 8A.
Q: Does it mount on DIN rail?
A: Yes. It clips onto standard DIN rail.
Q: What warranty do you offer?
A: A 12-month warranty. We test each unit before shipping.
Q: How fast is delivery?
A: We ship by FedEx, UPS, or DHL. Tracking goes out within one business day.
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
All rights reserved.
Reviews
There are no reviews yet.