I. Basic Information

Model: F3221

Series: HIMA F3 (19" rack-mounted safety system, non-closed type F30/F35)

Type: 16-channel DI safety input module (used with F3112/F3114 CPU)

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

Programming software: ELOP II (old version)

II. Electrical Specifications

Channels: 16 digital inputs (DI).

Input signals: 24VDC, source type / sink type compatible; 8mA signal or mechanical contacts.

Isolation: Safety isolation of 2kVrms, non-isolated between channels.

Response time: Typical 10ms.

Power supply: 5VDC (backplane) or 24VDC (external); 70mA at 5V, 130mA at 24V.

Diagnosis: Short circuit / open circuit detection, LED status indication.

Environment: 0℃ to +60℃, IP20.

Size/Weight: 19" rack, 4TE width; approximately 0.1kg.

III. Core Features

Safety architecture: Dual-channel redundant input, fail-safe design.

Independent channels: Input channels do not affect each other, single-channel failure does not affect other channels.

Backplane bus: Special safety bus of F3 series, communicates with F3112/F3114 and others.

Installation: 19" rack F3 cabinet, hot-swappable support.

IV. Differences from Modules in the Same Series

F3113A: 16-channel DI module, F3 series, discontinued.

F3221: 16-channel DI module, F3 series, higher isolation voltage (2kV), faster response (10ms).

F3211: 16-channel DO module, F3 series, relay output.

V. Alternative Suggestions

Direct replacement: F3113A (same specification 16DI, good compatibility).

Module replacement: F3DIO8/801 (8DI + 8DO, SIL3, DIN rail).

System upgrade: HIMatrix F35 or HIMax (SILworX, modern communication, full series I/O).