Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | F3417A |
| Brand | HIMA |
| Product Type | 4-fold fail-safe relay amplifier |
| Number of Channels | 4 |
| Power Supply | 24 V DC |
| Module Consumption | 0.1 A @ 24 V |
| Contact Rating | 1 A / 250 V AC |
| Response Time | <= 20 ms |
| Isolation | 1500 V AC contact-to-coil |
| Operating Temperature | -20 deg C to +60 deg C |
| Storage Temperature | -40 deg C to +85 deg C |
| Humidity | 5 – 95 % RH, non-condensing |
| Weight | 0.24 kg |
| Estimated Shipping Size | 19.8 x 14.2 x 2.5 cm |
| Country of Origin | Germany |
Operating principle
A relay amplifier sits between the logic level and the field load. The control side energises a coil, and the coil operates a contact that switches an electrically separate circuit. Coupling is magnetic only, so load-side voltage and switching transients stay out of the control electronics.
Fail-safe construction means the module is intended for trip and interlock duties. The safe state is reached when the output is de-energised. The documented specification covers the contact rating, response time, and isolation. However, it does not state the de-energised contact state or any test and line-monitoring functions. Therefore, you should confirm these points against the module documentation before you rely on the module in a safety function.
Contact ratings and load conditions
Each contact is rated 1 A at 250 V AC. This rating applies to the switched circuit only. The coil side uses the separate 24 V DC module supply.
No DC switching rating, inductive rating, or inrush capability is documented for this model. You should handle loads above 1 A, DC loads, and inductive loads through an interposing relay or contactor sized for the actual duty. Do not switch them directly with the module contacts.
Response time and isolation
Response time is given as ≤ 20 ms. This value bounds the delay between a change at the control input and the corresponding contact change. Include this delay when you use the module inside a trip path with a defined total shutdown time.
The contact-to-coil isolation of 1500 V AC lets the switched circuit run at a different potential from the 24 V DC control side without a common reference. It also limits the effect of load-side transients on the control electronics and on the rack supply.
Frequently Asked Questions
Q: What is the primary function of the HIMA F3417A module? A: It functions as a 4-fold fail-safe relay amplifier that provides galvanic isolation and safe signal switching between safety controllers and field devices.
Q: What level of electrical isolation does the contact-to-coil barrier provide? A: The module provides $1500\text{ V AC}$ isolation between the contacts and the coil to protect control electronics from high voltage transients.
SEO Title: HIMA F3417A 4-Fold Fail-Safe Relay Amplifier Datasheet Meta Description: Technical specifications and product details for the HIMA F3417A 4-fold fail-safe relay amplifier PLC board, featuring 24 V DC supply and 1500 V AC isolation. Product Type: Relay Amplifiers Tags: HIMA, Relay Amplifiers
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