F621508 is the complete order number/version number of HIMA F6215 (8-channel analog input module). In general, it is abbreviated as F6215 in both spoken language and technical documents.

I. Model Description 

F621508 = F6215 + 08

F6215: Basic model, 8-channel analog input (AI)

08: Indicates the 8-channel configuration version 

Brand/Series: HIMA (Black Horse) / F62 (HIMax) Rack

Function: Safety Analog Input Module (AI)

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

Status: Out of production; spare parts available. For new projects, recommend F6217.

II. Core Parameters (F621508 / F6215)

Channels: 8 analog input channels (single-ended / differential)

Signal types:

Voltage: 0–1V, 0–5V, 0–10V

Current: 0–20mA, 4–20mA (built-in 50Ω分流)

Temperature： Pt100 (2.5mA excitation)

Resolution： 12 bits

Conversion time： ≤ 4ms (all 8 channels)

Isolation： Channel-to-channel / Bus-to-bus photoelectric isolation， 1500Vrms

Self-diagnosis： Open circuit / Short circuit / Overrange / Power supply failure detection

Power supply： 24VDC (18–32V)， rack bus power supply

Operating temperature： 0℃ ~ +60℃ (some versions -20℃ ~ +60℃)

Installation： F62 rack standard slots (4TE wide)

III. Comparison with the same series (F62 rack AI module)

F6213： 4 AI， 12 bits， discontinued

F6214： 8 AI， 16-bit high precision， discontinued

F6215 (F621508)： 8 AI， 12 bits， standard accuracy， discontinued

F6217： 8 AI， 12 bits， mainstream in use， directly compatible with F6215

F6220： 8 AI， 16-bit + Ethernet， new model

IV. Alternative suggestions

Replacement parts for (F62 rack)： Prefer F6217 (directly compatible， high性价比)

Require high precision： Select F6220

New system (without F62 rack)： Select F60MI2401 (F60 series， more functions)