Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | HIMA |
| Model | F3330 |
| Order Number | 984333002 |
| Product Type | Safety-Related Digital Output Module |
| Number of Outputs | 8 |
| Output Type | Digital / solid-state safety output |
| Nominal Field Voltage | 24 VDC |
| Output Load | Resistive / inductive |
| Maximum Load per Channel | 500 mA / 12 W |
| Lamp Load | Up to 4 W |
| Internal Voltage Drop | Max. 2 V at 500 mA |
| Allowable Line Resistance | Max. 11 Ω |
| Short-Circuit Protection | Yes |
| Short-Circuit Current Range | Approximately 0.75–1.5 A |
| Output Leakage Current | Max. 350 μA |
| Undervoltage Trip | ≤16 V |
| Output Reset Voltage | Max. 1.5 V |
| Test Signal Duration | Max. 200 μs |
| Module Consumption | 5 VDC: approx. 110 mA; 24 VDC: approx. 180 mA plus load |
| Space Requirement | 4 TE |
| Safety Classification | Safety-related; SIL 3 / Category 4 |
| Application | HIMA safety control and shutdown systems |
HIMA’s current certification material explicitly identifies F3330 as an 8-channel safety-related digital output module, with a 500 mA / 12 W characteristic. HIMA also distinguishes F3330 from F3331, which adds line-monitoring functionality, and from F3333/F3334, which use four higher-capacity output channels.
The available technical data specifies short-circuit protection, a maximum 2 V internal voltage drop at 500 mA, maximum 11 Ω admissible line resistance, and an undervoltage trip threshold of ≤16 V.
Application Scenarios & Pain Points
Output modules deserve more attention than they usually receive. A controller may diagnose the logic correctly while the field actuator still fails to move because of excessive load current, wiring resistance, or a degraded solenoid coil.
- Emergency shutdown systems: Drives shutdown solenoids and other discrete final elements after the safety logic determines that a trip condition exists.
- Process interlocking: Controls discrete actuators, contactors, alarms, and permissive-related equipment in safety applications.
- Turbomachinery protection: Appropriate for discrete shutdown commands where the output is part of a certified protection chain.
- Legacy HIMA H41q/H51q systems: A direct spare candidate when maintaining an existing safety rack rather than redesigning the application.
Field note: Check the actual coil current. A nominal 24 V solenoid can have a surprisingly high inrush or holding-current requirement, and cable resistance matters too. HIMA specifies an admissible line resistance of up to 11 Ω under the documented conditions.
F3330
Related Products
- HIMA F3330 / 984333002 — The subject 8-channel safety-related digital output module. Each output is designed for loads up to 500 mA / 12 W under specified conditions.
- HIMA F3331 — Closely related 8-channel safety output module with line monitoring. HIMA distinguishes it from F3330 by the additional SC/OC line-monitoring capability.
- HIMA F3333 — Four-channel safety output module with substantially higher output capacity, specified at 2 A / 48 W. It is useful for larger loads but is not a channel-for-channel replacement for F3330.
- HIMA F3334 — Related four-channel safety output module with the same higher-capacity 2 A / 48 W class and additional line-monitoring characteristics.
- HIMA F3322 — 16-channel output module in the same broader HIMA F-series family. Its channel count and safety characteristics differ, so substitution requires an engineering review.
- HIMA F3236 — 16-channel safety-related digital input module. It complements by receiving discrete field states while provides safety output commands.
- HIMA F3237 — 8-channel safety-related input module intended for proximity-switch applications. It handles field feedback rather than actuator output.
- HIMA F6217 — 8-channel safety-related analog input module for 0/4–20 mA and 0–5/10 V signals. It is complementary when the safety system also needs analog transmitter acquisition.
The Engineer’s Guide: Field Pitfalls to Avoid
WARNING 1 — Do not substitute for F3331 simply because both have eight outputs.
HIMA specifically identifies F3331 as the version with additional line-monitoring functionality. and F3331 therefore have an important functional difference even though both are eight-channel safety output modules.
How to avoid it: Check the safety application documentation for output-line monitoring requirements before accepting an alternative.
WARNING 2 — Check actuator current, not just actuator voltage.
A 24 VDC solenoid is not automatically suitable. The output has a documented 500 mA / 12 W load limit under the applicable conditions, and line resistance also affects the voltage delivered to the actuator.
How to avoid it: Measure or obtain the actuator’s steady-state and inrush characteristics. Calculate cable voltage drop before commissioning.
WARNING 3 — Verify the hardware revision.
HIMA’s revision list identifies revisions 05 and 06 as valid versions in the cited H41q/H51q certification documentation.
How to avoid it: Record the revision printed on the existing module and compare it with the replacement before installing it. Do not treat an old-stock board as equivalent merely because the front label says .
Frequently Asked Questions (FAQ)
What is HIMA 984333002 used for?
The HIMA 984333002 is an 8-channel safety-related digital output module. It takes output commands generated by the HIMA safety controller and switches corresponding field loads such as solenoids, contactors, alarms, and shutdown devices. HIMA’s certification documentation confirms the ‘s eight-channel safety-output designation.
What is the output current rating of ?
The documented load capability is 500 mA per channel / 12 W for resistive or inductive loads under the specified operating conditions. Lamp loads have a lower stated limit of approximately 4 W.
Do not size the output solely from the actuator’s nominal wattage. Inrush current, cable resistance, ambient temperature, and the actual load type all matter.
Is HIMA a SIL 3 module?
Yes. HIMA identifies as a safety-related SIL 3 output module. Its certification documentation also associates the module with Category 4 applications.
That does not mean every safety function using the module automatically achieves SIL 3. The complete SIF, including input devices, logic solver, output path, final element, diagnostics, proof testing, and configuration, determines the achieved safety integrity.
What is the difference between and F3331?
Both are eight-channel safety-related output modules. The important distinction is line monitoring: HIMA’s certification documentation identifies with additional SC/OC line-monitoring characteristics, while is listed without that additional line-monitoring designation.
If the existing application relies on output-line diagnostics, substituting for requires an engineering review.
Can be used with a 24 VDC solenoid valve?
Potentially, yes, provided the valve’s electrical characteristics remain within the module’s specified output limits.
Before connecting it, verify:
- Nominal coil voltage
- Steady-state current
- Inrush current
- Load type
- Cable length
- Total line resistance
- Required diagnostic behavior
- Safety-system configuration
The documented output capacity is 500 mA / 12 W, with an allowable line resistance of up to 11 Ω under the specified conditions.
Is compatible with older HIMA systems?
is associated with HIMA’s H41q/H51q safety-system hardware, and HIMA maintains a formal revision list for these systems.
For a legacy replacement, verify the rack, system generation, hardware revision, firmware compatibility, terminal arrangement, and safety application before installation.
How should a refurbished 984333002 be tested?
For a critical safety spare, a meaningful test should include:
- Confirm / 984333002 identification.
- Record hardware revision.
- Inspect connector and PCB condition.
- Power the module using the correct HIMA system arrangement.
- Exercise all eight outputs.
- Apply representative resistive and inductive loads.
- Verify short-circuit protection.
- Check output voltage drop under load.
- Verify LED/channel diagnostics.
- Run an extended thermal/operational test.
A simple power-up test is not enough. For an ESD or shutdown application, I would want channel-level test evidence before putting the spare on the shelf.
What should I request when purchasing 984333002?
Ask for photographs of the , including the complete 984333002 order number and hardware revision. For refurbished equipment, request a channel-by-channel test report and clearly documented condition.
If the module is intended for a safety shutdown system, also confirm that the supplied revision is appropriate for the installed HIMA system and that the required safety documentation is available.
