Description
Core Product Summary
The HIMA F3322 (Part Number 984332202) is a high-density, 16-channel safety digital output module engineered for H41q and H51q safety PLC sub-racks. Designed for critical industrial safety instrumented systems, this module safely switches resistive loads, inductive loads, and lamp connections up to 500 mA per channel.
Integration into safety automation architectures is supported by galvanic safety isolation and a fail-safe design that cuts off outputs immediately upon the loss of the L- supply. The module occupies 4 TE of rack width, incorporates internal short-circuit protection with a current-limiting threshold above 550 mA, and utilizes pre-fabricated front plug cabling to streamline cabinet wiring and maintenance in process industries.
Key Technical Specifications
| Parameter | Specification Value |
| Product Type | Safety Digital Output Module |
| System Series | HIMA HIQuad (H41q / H51q system families) |
| Output Channels | 16 independent digital outputs |
| Max. Current per Channel | 500 mA (current-limit threshold > 550 mA) |
| Max. Load per Channel | 12 W (compatible with resistive, inductive, and lamp loads) |
| Power Consumption | 5 V DC: 110 mA; 24 V DC: 150 mA (plus field load power) |
| Rack Space Requirement | 4 TE width |
| Sub-Rack Capacity Limit | Max. 10 output modules per I/O sub-rack under full rated load |
| Protection Features | Short-circuit proof; fail-safe output cut-off on L- supply break |
| Certifications / Approvals | CE, SIL-compliant safety architecture |
Detailed Product Overview
The HIMA F3322 functions as a dense digital output solution for safety instrumented systems (SIS), controlling actuators such as solenoid valves, emergency contactors, and alarm indicators. Each of the 16 channels is engineered to handle switching currents up to 500 mA while offering built-in short-circuit protection that triggers above 550 mA to safeguard downstream field devices and internal circuitry.
The architecture emphasizes fail-safe operation: a break in the L- supply automatically interrupts output signals to prevent unintended actuation. Because of its high-density 16-channel layout packed into a compact 4 TE form factor, it optimizes cabinet footprint in large-scale safety applications such as burner management systems, emergency shutdown loops, and Fire & Gas (F&G) installations.
F3322
F3322
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Controller Platform | HIMA H41q and H51q safety PLC systems | Plugs directly into standard I/O sub-racks via the integrated backplane I/O bus interface. |
| Field Termination Cables | Z7136 / 3322 series pre-fabricated front cables | Recommended to ensure correct pin assignments and minimize wiring errors during installation. |
| Power Supply & Fusing | 24 V DC field supply; I/O rack fitted with 4 A slow-blow fuse | Total simultaneous switched load across modules must not exceed 50% of total output capacity (8 A). |
| Inductive Load Protection | External 1N4007 free-wheeling diodes | Mandatory for inductive loads (such as solenoid valves) to suppress back-EMF and extend contact life. |
Dimensions, Mounting & Connection Notes
- Form Factor: Occupies a standard 4 TE width slot within HIMA H41q/H51q I/O sub-racks.
- Connection Interface: Front connector plug designed for pre-fabricated multi-core cables (such as LiYY 0.5 mm² variants).
- Sub-Rack Limitations: A maximum of 10 output modules with nominal load can be fitted into one I/O sub-rack.
- Grounding and Power Separation: Requires proper separation of L+ and L- supply rails and solid backplane grounding to maintain system safety integrity.
FAQ
What is the HIMA F3322?
The HIMA F3322 (Part No. 984332202) is a 16-channel safety digital output module designed for HIMA H41q and H51q safety PLC sub-racks.
What is the maximum current capacity per channel?
Each channel supports up to 500 mA of switching current with an internal current-limiting threshold set above 550 mA.
How does the module handle a loss of L- supply?
In accordance with fail-safe principles, any break in the L- supply instantly cuts off all output signals to prevent accidental device activation.
Are external components required for inductive loads?
Yes, inductive loads like solenoid valves require an external 1N4007 free-wheeling diode to suppress reverse voltage spikes.
How many F3322 modules can be placed in a single sub-rack?
A maximum of 10 output modules under full rated load can be fitted into one I/O sub-rack, provided total simultaneous switched current does not exceed 50% of full capacity.
If you need compatibility details or pinout specifications for other HIMA HIQuad modules like digital inputs or processor cards, let me know which specific part numbers you are working with.
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