F3417A HIMA 4-Fold Fail-Safe Relay Amplifier

Description

The F3417A is a 4-fold fail-safe relay amplifier module manufactured by HIMA. It is designed for safety-related applications where the output signals of a safety instrumented system must be electrically isolated and amplified before driving final elements such as actuators, solenoids, or alarm devices. Each of the four independent channels incorporates a forced-guided relay contact set that enables reliable detection of contact welding. The module operates from a 24 V dc supply and is housed in a compact PLC-style board format suitable for DIN rail mounting within a HIMA safety system rack.

Functional Description

The module receives four discrete safety output signals from the connected controller and switches them through four independent forced-guided relays. In the event of a contact weld, the mechanical linkage between the contacts prevents the normally open and normally closed contacts from closing simultaneously. This enables the safety logic solver to detect the fault and initiate a safe state transition. The fail-safe design ensures that loss of supply voltage or internal faults drive all outputs to a de-energized state.

Electrical Characteristics

Frequently Asked Questions

Q: What is the maximum load that each relay output channel can switch?

A: Each channel is rated for 1 A at 250 V ac. Exceeding this rating may cause contact welding that the forced-guided mechanism is designed to detect, but operation beyond the rated load reduces relay service life.

Q: Can the F3417A be used with non-HIMA safety controllers?

A: The module is designed as part of the HIMA safety system architecture. It can accept 24 V dc discrete input signals from other sources, but compatibility with a specific third-party controller depends on matching the output voltage and current drive capability of that controller to the module's input requirements.

Q: What does the 1500 V ac isolation rating refer to?

A: The 1500 V ac isolation is specified between the relay contacts and the coil side of the module. This dielectric strength rating ensures that a fault on the load side does not propagate to the low-voltage control and supply circuits.

Other Attributes

• Country of Origin:  Germany
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of HIMA

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• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

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