A-B 700-FSM3UU23 Time Relay

Product Dimensions：

The 700-FSM3UU23 is a DIN-rail mounted, solid-state universal timing relay. It is designed for industrial applications requiring precise control over time-delayed switching. As a "Multi-Function" unit, it consolidates several timing modes into a single device, reducing the need for multiple specialized relays in your inventory.

### Technical Specifications (Product Parameters)

## Product Advantages

• Universal Voltage: The "UU" designation indicates a wide input range (24-240V AC/DC), making it compatible with almost any industrial control circuit globally.

• Space-Saving Design: With a slim 22.5mm width, it maximizes panel space efficiency.

• Versatility: One unit can perform eight different functions, simplifying design and spare parts management.

• High Precision: Features excellent repeat accuracy ($\pm0.2\%$) to ensure consistent process cycles.

• Clear Diagnostics: Equipped with LED indicators for both input status and output relay status.

## Primary Timing Functions

This model typically supports the following modes, selectable via a rotary switch on the faceplate:

1. On-Delay

2. Off-Delay (with auxiliary supply)

3. One-Shot (Leading edge)

4. Flasher (Starting with pulse or pause)

5. Accumulative On-Delay

6. Off-Delay (without auxiliary supply / true off-delay)

## Important Considerations (Usage Notes)

• Correct Wiring: Ensure that the input voltage is applied to terminals A1 and A2. If using an external trigger/start signal, verify it matches the logic of the selected function.

• Environmental Limits: Avoid installing the relay in environments exceeding the rated temperature range (typically -25°C to +60°C).

• Adjustment: Always disconnect power or ensure the process is safe before adjusting the time range or function dial to prevent accidental machine starts.

• Inductive Loads: If switching highly inductive loads (like large solenoid valves), use an external surge suppressor to protect the relay contacts.

## Product Applications

The 700-FSM3UU23 is widely used across various industries including:

• Motor Control: Delaying the start of secondary motors to prevent power surges.

• HVAC Systems: Controlling fan run-on times or compressor delay cycles.

• Conveyor Belts: Managing sequence starts or detecting jams via time-out functions.

• Machine Tooling: Controlling lubrication cycles or cooling periods.

• Safety Logic: Providing a time buffer before a gate unlocks or a process resets.

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