SEC PB5F-DYL Latching Relay Output Module

The SEC PB5F-DYL is a specialized digital output module featuring latching (bistable) relays. Unlike conventional relays that require continuous power to maintain a state, latching relays retain their position after the actuating pulse is removed, making them ideal for applications where output states must be preserved during power interruptions.

Technical Specifications

Each of the five channels provides SPDT relay contacts with the same load ratings as conventional relays but with the unique latching capability. The module includes individual status indicators for each channel, showing the current relay state. Separate set and reset control signals are provided for each channel or can be configured for common control.

• Output Channels: 5 latching relay outputs

• Contact Configuration: SPDT (Form C) per channel

• Contact Rating: 5 A at 250 V AC / 30 V DC (resistive)

• Operation: Bistable (latching) with set/reset pulses

• State Retention: Maintains state without power

• Status Indication: Individual channel LEDs

• Power Supply: 24 V DC for logic and pulse generation

• Mounting: DIN rail compatible, compact design

Application Suitability

The PB5F-DYL is ideal for applications requiring fail-safe output states, such as emergency shutdown systems, valve position control, and critical machine interlocks. It is also well-suited for remote installations where power consumption must be minimized or for battery-backed systems requiring extended operation.

Energy Efficiency and Reliability

Because latching relays only consume power during state changes, the PB5F-DYL significantly reduces power consumption compared to conventional output modules. The mechanical latching mechanism ensures that output states are maintained indefinitely without power, providing inherent fail-safe behavior and eliminating the need for complex power backup arrangements.