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HIMA F3421 Relay Amplifier Module with 24VDC Input Voltage 10A at 250VAC Output
HIMA F3421 Relay Amplifier Module with 24VDC Input Voltage 10A at 250VAC Output
24VDC Input Voltage Relay Amplifier Module
10A at 250VAC Output HIMA F3421
<10ms Response Time Safety Relay Module
Place of Origin:
Germany
Brand Name:
Hima
Model Number:
F3421
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Product Details
Brand:
Hima
Part Number:
F3421
Description:
Relay Amplifier Module
Country Of Origin:
Germany
Place Of Shipment:
Xiamen, China
Shipping:
TNT, DHL, FedEx, EMS, UPS
Packaging:
Original New Packaging
MOQ:
1 Piece
Highlight:
24VDC Input Voltage Relay Amplifier Module
,10A at 250VAC Output HIMA F3421
,<10ms Response Time Safety Relay Module
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
Product Model: F3421
Product Parameters: Relay Amplifier Module
Country of Origin: Germany
Place of Shipment: Xiamen, China
Estimated Shipping Size: 2cm x 18.8cm x 12.8cm
Manufacturer: HIMA
Weight: 0.18 kg
Input Voltage: 24VDC
Output Relay Rating: 10A at 250VAC
Digital Input: 0-24 V
Humidity Range: 5% to 95% non-condensing
Response Time: <10ms
Isolation Voltage: 1.5 kV
How does the F3421 handle 24VDC rail fluctuations in high-noise environments?
The module is purpose-built for a nominal 24VDC input. While the digital input accepts a 0-24V swing, the relay's internal coil requires a stable DC source to prevent "contact chatter." During site commissioning, ensure the power supply ripple is minimized; otherwise, the logic state might oscillate near the threshold, compromising the relay's mechanical life.
Addressing the "Digital 0-24V" input--what is the actual switching threshold?
Unlike standard TTL logic, the F3421 is optimized for industrial 24V signals. The relay typically energizes when the voltage crosses the upper 70-80% of the nominal range. If you are driving this from a PLC with significant leakage current in the "OFF" state, verify that the residual voltage is below 5V to ensure a clean drop-out.
Can we push the 10A @ 250VAC limit for inductive solenoid valves?
The 10A rating is a "hard ceiling" primarily for resistive loads. For inductive loads (e.g., heavy-duty solenoids), you must factor in the cos φ (power factor). In high-cycle applications, switching 10A without an external snubber or arc-suppression circuit will lead to contact pitting and eventual welding. For SIS loops, we recommend derating to 60-70% capacity to maintain MTBF.
Is the <10ms response time sufficient for Emergency Shutdown (ESD) protocols?
Absolutely. A <10ms actuation time is elite for a mechanical relay amplifier. In the hierarchy of a safety loop, this speed ensures the HIMA logic reaches the final control element (FCE) almost instantly. It's the standard for "Time-to-Safety" critical paths where every millisecond reduces the risk of process excursion.
1.5 kV isolation--does this provide adequate protection against backplane surges?
The 1.5 kV galvanic separation is the module's "firewall." It prevents high-voltage transients from the 250VAC side from migrating into the 24VDC control logic. This isolation is crucial for protecting the HIMA CPU rack. If the field side experiences a catastrophic short, the F3421 might sacrifice itself, but the upstream safety logic remains intact.
Does the 0.18 kg mass affect vibration resistance in cabinet mounting?
The low mass (180g) is actually an advantage. It lowers the moment of inertia on the DIN rail, making the F3421 less susceptible to mechanical resonance in high-vibration environments (like offshore platforms or compressor houses). Its compact 2cm width maximizes "rack density" without compromising the 1.5 kV dielectric clearances.
Handling the 95% non-condensing RH limit in coastal hubs (e.g., Xiamen delivery)?
Given the Xiamen shipment route, the module may encounter high humidity. The "non-condensing" spec is strict. If the cabinet isn't climate-controlled and the dew point is reached, moisture can bridge the 1.5 kV isolation gaps. Always utilize cabinet heaters or desiccants during the transition from logistics to live operation in tropical climates.
Why prioritize the German-origin F3421 for legacy HIMA system expansions?
HIMA's German engineering ensures that the F3421's switching cycle consistency and material science (contact plating) meet SIL-3 requirements. For legacy or high-availability systems, swapping in generic relay amplifiers compromises the TUV-certified safety loop. Stick to the F3421 to maintain the original safety signature of the SIS.
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