Description Key Technical Specifications Parameter Specification Part Numbers F8621A, 984862160 Product Type Digital Output Module Series HIMax Safety System Channels 8 outputs Output Type 24V DC sourcing (PNP) Output Current 2A per channel maximum Total Current 8A per module maximum Load Types Resistive, inductive (with suppression) Safety Integrity SIL3 per IEC 61508 Diagnostics Short circuit, overload, open load, cross-circuit Fault Response Safe state configurable (de-energize) Isolation Channel-to-channel, channel-to-backplane Hot Swap Supported (online replacement) Indicators Per-channel status, module health, diagnostics LEDs Power Supply 24V DC field power (external) Mounting HIMax rack Operating Temp 0°C to 60°C Certifications TÜV SIL3, PL e Condition New Surplus (Original Packaging) Product Introduction The HIMA F8621A 984862160 is an 8-channel digital output module for the HIMax safety system. Designed for high-demand safety applications, it provides fail-safe control of solenoids, contactors, motor starters, and alarms in emergency shutdown (ESD), fire and gas, and burner management systems. Each output is capable of 2A continuous current with comprehensive diagnostics. The F8621A 984862160 features per-channel short circuit, overload, and open load detection. In fault conditions, outputs go to a safe state (typically de-energized) as configured in the safety logic. Hot-swap capability allows module replacement without shutting down the safety system, provided the process is in a safe state. This unit is new surplus, factory-sealed in original HIMA packaging. HIMax components are critical for safety instrumented systems; contact us for current stock and firm pricing. Frequently Asked Questions (FAQ) Q: What safety level is the F8621A certified for? A: The HIMA F8621A 984862160 is TÜV certified for SIL3 per IEC 61508 and PL e per ISO 13849. This means it’s suitable for the highest risk applications—emergency shutdown, fire and gas, turbine control, and other safety functions where failure could cause major consequences. The module’s internal diagnostics and redundant architecture ensure that dangerous failures are detected and the outputs go to a safe state. Q: How does the F8621A achieve SIL3 with only 8 outputs? A: The F8621A 984862160 uses a combination of: Internal redundancy (dual processing paths) Comprehensive diagnostics (short circuit, overload, open load, cross-circuit) Safe state behavior (outputs de-energize on fault) High diagnostic coverage (>99%) Independence from standard control systems Each output is continuously monitored. If a fault is detected that could prevent the output from responding to a safety demand, the module reports it and can take configured action. This meets SIL3 requirements for high-demand applications. Q: Can the F8621A drive inductive loads like contactors and solenoids? A: Yes, with proper external suppression. The HIMA F8621A 984862160 can drive inductive loads up to 2A, but you MUST install snubber diodes or RC suppressors across the coil. Without suppression, the back-EMF when the output turns off can: Damage the output transistor Cause false diagnostics Generate electrical noise affecting nearby circuits HIMA recommends external suppression for all inductive loads. In safety systems, this is non-negotiable. The module has some internal protection, but don’t rely on it for large inductors. Q: What diagnostics does the F8621A provide? A: The F8621A 984862160 continuously monitors: Short circuit (output to 24V or ground) Overload (current exceeds 2A per channel) Open load (wire break to field device, with test current) Cross-circuit (between outputs or to other signals) Internal faults (processor, communication, power supply) All diagnostics are reported to the safety controller and can be annunciated to operators. This is critical for maintaining safety integrity—you need to know if a field device is disconnected or an output is failed before a demand occurs. Q: What do the front panel LEDs indicate on the F8621A? A: The HIMA F8621A 984862160 has multiple status LEDs: RUN (green): Module operational, communication active DIAG (yellow): Diagnostic event present (non-critical) ERR (red): Module fault (critical, outputs may be affected) Per-channel LEDs (green/red): Output state (green = ON, red = fault on that channel) If you see ERR red, check the safety controller diagnostics immediately. The module may need replacement. If DIAG yellow, investigate the specific channel fault (open load, short circuit) at the next opportunity. Q: Is the F8621A hot-swappable in a live HIMax rack? A: Yes, the F8621A 984862160 supports hot-swapping (online replacement). The HIMax backplane is designed for live module insertion/removal. However: The 8 outputs go offline during the swap The safety logic sees the module fault and may trip if configured for fail-safe action For critical safety functions, ensure the process is in a safe state or bypassed before swapping I’ve swapped F8621A modules live in refineries, but always with operator approval and safety protocols in place. The hardware handles it fine; the process safety case may not. Follow your site’s safety procedures. Q: What’s the difference between F8621A and F8621? I’ve seen both numbers. A: The “A” suffix typically indicates a hardware revision or enhanced version. F8621A 984862160 is the current revision with: Updated component sourcing Enhanced diagnostics Improved EMC performance Longer lifecycle availability The older F8621 (without A) may be obsolete or have different characteristics. Always match the exact part number from your existing system. Swapping an old F8621 for a new F8621A usually works, but verify with HIMA’s compatibility documentation. In safety systems, we prefer to match revisions exactly. Q: What external power does the F8621A require? A: The HIMA F8621A 984862160 requires external 24V DC field power for the outputs. This is typically provided by a redundant safety-rated power supply. The module does NOT generate output power from the backplane. You must connect: 24V DC to the module’s field power terminals 0V to common The logic power for module electronics comes from the backplane. Field power must be fused appropriately (typically 10A fast-blow per module). In safety systems, we use two independent power feeds for redundancy—one for each group if the module supports it. Q: What’s the typical failure mode for F8621A modules in safety systems? A: In my experience with HIMax: Output transistor failure from surges or shorted field wiring (most common) Field power fuse issues (external fuses blow, module reports fault) Connector corrosion in harsh environments (offshore, chemical) Internal diagnostics false alarms (rare, but can happen with aging components) The F8621A 984862160 is built for safety, but field wiring is the weak point. If you lose one channel while others work, the module is damaged—replace it. In safety systems, we never troubleshoot a failed output—we replace the module immediately. Safety integrity comes first. Q: Can the F8621A be used in SIL2 applications, or is it overkill? A: It’s certified for SIL3, but you can use it in SIL2 applications—it’s overkill but works fine. The doesn’t care what safety level you’re targeting. However, the module’s diagnostics and fault tolerance are designed for SIL3. If your application only needs SIL2, you’re paying for capability you don’t use. Many plants standardize on F8621A across all safety functions for spares commonality. That’s fine—the module doesn’t degrade in lower-SIL use. Q: Does the F8621A require configuration software? A: Yes. The HIMA F8621A 984862160 must be configured in HIMA’s programming software (ELOP II or similar). You define: Output mapping to safety logic Fault response behavior (safe state) Diagnostic thresholds Channel parameters If you’re replacing a failed F8621A with an identical module, the configuration is stored in the safety controller and downloaded automatically when you insert the new module. For new installations, expect engineering time to configure. Q: What’s the maximum cable length from F8621A to field devices? A: The drives 24V DC outputs, so cable length is limited by voltage drop and noise. With 2A load and 18 AWG wire, voltage drop is about 0.02V per foot round trip. For 500 feet, that’s 10V drop—leaving only 14V at the load, which may not operate the device. Practical limit: 300-500 feet depending on load current and wire gauge. For longer runs, use larger wire or install remote I/O closer to field devices. In safety systems, keep runs short to ensure reliable operation under fault conditions. 3BHB000272R0101 plc PFEA111-20-3BSE050090R20 PLC PM3326B-6-1-2-E plc PM860 PLC BGRDKC02.3LKSCK02 PLC Lenze-EL2200 PLC Email: [email protected] Phone: 86 15340683922 Sales:Wu Jiedong Our products are guaranteed for 1 year, with new and original production stopped and imported spare parts. All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager). Our product: brand new original packaging Our warranty: All new or repaired parts have a 12 month warranty period beginning Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed! If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!