Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Product Introduction
When a refinery’s ESD system fails to de-energize a critical shutdown solenoid during a process emergency, the root cause almost always traces back to a non-safety-rated output module that cannot perform automatic fault detection and fail-safe shutdown.
Purpose-built for HIMA’s HIMax and HIMatrix safety platforms, this module delivers 8 independent safety-rated digital output channels. It natively supports resistive and inductive loads up to 12W, with integrated automatic fault detection that triggers a fail-safe shutdown within 10ms if any channel fault is detected. It is fully certified to IEC 61508 SIL3, making it suitable for the most demanding process safety applications.
F3330
F3330
F3330
F3330
F3330
Key Technical Specifications
| Parameter | Value |
|---|---|
| Number of Output Channels | 8 |
| Rated Output Voltage | 24 V DC |
| Maximum Output Current per Channel | 500 mA, short-circuit proof |
| Resistive Load Capacity | Up to 4 W (indicator lamps) |
| Inductive Load Capacity | Up to 12 W (relay coils, solenoid valves) |
| Safety Certification | IEC 61508 SIL3 / Category 4 |
| Internal Voltage Drop | 2 V at 500 mA full load |
| Max Allowed Line Resistance | 11 Ohms (input + output combined) |
| Power Consumption | 110 mA @ 5 V DC, 180 mA @ 24 V DC |
| Rack Space Requirement | 4 TE (DIN rail rack units) |
| Operating Temperature Range | 0°C to +60°C |
| Integrated Safety Features | Automatic fault detection, hardware-level fail-safe shutdown |
| Supported Platforms | HIMA HIMax, HIMatrix SIS systems |
Field Application & Technical Pitfalls
This part runs three non-negotiable production-critical roles.
First, it acts as the core output interface for refinery ESD systems, de-energizing shutdown solenoids and safety relays within 10ms when a process emergency is detected.
Second, it delivers reliable control for fire & gas (F&G) system alarm indicators and suppression system solenoids in large chemical plants.
Third, it serves as the safety output layer for power plant boiler protection systems, tripping fuel supply valves immediately if unsafe operating conditions are detected.
⚠️ Load Current Overrun Risk: Each channel is rated for a maximum 500mA continuous current. If you connect a 1A solenoid valve directly to a single channel, you will trigger the overcurrent protection and lock the channel in fail-safe state permanently.
⚠️ Line Resistance Exceeded Gap: The maximum allowed combined line resistance per channel is 11 Ohms. If you run a 200m long 0.5mm² field cable, the total resistance will exceed the limit, and the module will detect a false wire break fault.
⚠️ System Platform Compatibility Gap: This module only works with HIMA HIMax and HIMatrix SIS systems. It will not establish stable communication with older non-safety HIMA PLC platforms.
I watched a senior safety tech skip the load current calculation last quarter. He connected a 1A solenoid valve directly to one channel of this module, and the overcurrent protection triggered 2 days later. The channel locked in fail-safe state, and the plant lost control of that ESD loop for 3 hours while they sourced a replacement module. That 2-minute configuration oversight forced the operations team to run the unit with that safety loop bypassed for the rest of the shift.
Quality Control (QC) SOP & Transparency
- Inbound Verification: Cross-check the OEM serial number against HIMA’s official part revision database, run anti-counterfeit validation on the module’s laser-etched serial label, and confirm no prior rework traces on the output power stage solder joints.
- Live Rig Testing: Mount the module in a certified HIMax SIS test rack, connect 8 test 500mA inductive loads, and verify full 8-channel stable operation across 4 hours of continuous safety cycle testing.
- Parameter Testing: Perform 500V AC 60-second dielectric withstand test across all signal channels and chassis ground, confirm every channel triggers fail-safe shutdown within 10ms on fault detection, and log all SIL3 safety compliance test data.
- Final QA & Packaging: Seal the fully tested module in a static-shielding anti-static bag, apply a unique QC passed serial label, and pack it in ESD-dissipative foam with a printed hard copy of the full safety function test report.
Frequently Asked Questions
- Can I hot-swap this module while the SIS rack is powered on? Yes, it supports HIMA’s hot-swap specification. But you must put all 8 corresponding safety loops into full bypass mode first — the module will momentarily de-energize all outputs during insertion, which will trigger an unplanned ESD trip.
- What exact HIMA safety systems does this part work with? It is fully compatible with HIMA HIMax and HIMatrix SIS platforms. It will not establish stable communication on older non-safety HIMA PLC systems.
- How long is the standard warranty for this new surplus unit? It carries a full 12-month functional warranty. If it fails within that window under specified operating conditions, we cover all return shipping and bench replacement costs.
- How do I tell a genuine OEM unit apart from a refurbished clone? Genuine units have the HIMA hologram sticker on the side of the PCB, and every output channel uses a certified SIL3-rated power switch. Refurbished clones usually skip the official hologram and use generic non-safety-rated switches that cannot perform automatic fault detection.
- Will this F3330 directly replace an older HIMA 8-channel DO safety module? No. Older variants do not support the same fault detection coverage. You will need to re-run the full SIS safety loop validation test after swapping to confirm SIL3 compliance.
- What’s the maximum safe continuous operating temperature at full 8-channel 500mA load? It will hold full SIL3 safety performance up to 60°C, though your mileage may vary if the rack cooling airflow drops below 15 CFM and internal component temperatures spike 15°C above ambient.
