HIMA F3236 is a 16-channel SIL3 safety DI module for the HIQuad (H41q/H51q) platform. It is an upgraded version of F3226A on the same platform, supporting 6mA current input. It has been discontinued and spare parts are no longer available.

I. Basic Information

Model: F3236 (specific for H41q/H51q, not compatible with F3 series)

Brand/Model Series: HIMA (Black Horse) / HIQuad Safety System

Function: 16-channel safety digital input DI, SIL3 certification

Safety Level: SIL3 (IEC 61508), TÜV AK6, Cat.4/PL e

Programming Software: Special configuration tool for H41q/H51q

Status: (EOL), original factory has no new stock, second-hand / in stock / refurbished supply

II. Electrical Specifications (Enhanced F3226A)

Channels: 16 DI channels, each channel with independent diagnosis

Input signals: 24 VDC dry contacts / 6 mA current signal (NAMUR type, F3226A is 8 mA)

Isolation: 2 kVrms isolation

Response time: Typical 8 ms

Power supply: Backplane 5 VDC (120 mA) or 24 VDC (200 mA) dual power supply

Diagnosis: Single-channel open circuit / short circuit / line resistance detection, fault coverage > 99%

Environment: -20 ℃ to +60 ℃, IP20

Size / Weight: 19" rack, 4TE wide; approximately 0.15 kg

III. Core Differences from F3226A/F3224A

F3236 vs F3226A (Platform Upgrade)

Input current: F3236 6 mA; F3226A 8 mA

Power Supply: F3236 offers dual power supply of 5V/24V; F3226A only provides 5V on the back panel

Diagnosis: F3236 offers more comprehensive fault detection and stronger anti-interference

F3236 vs F3224A (incompatible across platforms)

Platform: F3236 H41q/H51q; F3224A F3 series

Isolation: F3236 has 2 kV isolation; F3224A has 2.5 kV high isolation

Input: F3236 provides 6mA + dry contacts; F3224A provides 8mA NAMUR + dry contacts

IV. Replacement Suggestions

Same platform (H41q/H51q): Prefer to choose F3236 second-hand / refurbished, with the best compatibility

Cross-platform upgrade (F3 series): Replace with rack F3112/F3114, select F3224A

System upgrade: Migrate to HIMax (SILworX) or HIMatrix F35