700-FSM3UU23 Allen-Bradley

700-FSM3UU23 Allen-Bradley Central control module

Brand：Allen-Bradley Model number：700-FSM3UU23

Country of origin: United States Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The 700-FSM3UU23 is a Multi-Function and Multi-Range timing relay. Its versatile design allows users to select from 8 distinct timing functions and 10 setting modes using rotary switches on the front panel. It features a universal supply voltage capability, which significantly reduces the need for large spare parts inventories by covering most common industrial control voltages. The unit is designed to be finger-safe and can be mounted directly onto a standard DIN rail without the need for an additional socket.

Product Parameters

Timing Functions: Includes On-Delay, Off-Delay, On-and-Off-Delay, One Shot, Fleeting Off-Delay, Flasher (Repeat Cycle), On-Delay Pulse Generator, and Pulse Converter. It also includes dedicated "On" and "Off" functions for installation and maintenance testing.
Timing Range: Extremely broad range from 0.05 seconds to 60 hours, selectable across 12 smaller sub-ranges.
Contact Configuration: 1 C/O (Changeover - SPDT) contact.
Contact Rating: 8 A thermal current (Ith).
Input/Control Voltage: Dual voltage support; 24–48V DC and 24–240V AC (50/60 Hz).
Mounting Type: 35 mm DIN rail mounting (front-facing adjustment).
Housing Width: 22.5 mm (approximately 0.89 inches).
Status Indicators: LED diagnostics for coil status (green LED) and timing/output status (red LED).
Standards: UL listed, CE marked, CCC, CUL, and Marine certified.

Product Advantages

Versatility: The multi-function nature means one single part number can fulfill various roles in a control panel, simplifying design and procurement.
Space Efficient: The slim 22.5 mm profile saves valuable space on the DIN rail in crowded control cabinets.
Ease of Setup: Timing ranges and functions are easily adjusted using the front-mounted dials, which can be operated with a standard screwdriver.
Integrated Protection: The module includes built-in coil surge protection to guard against electrical transients common in industrial environments.
High Reliability: Designed for long life with a mechanical lifespan of approximately 30 million operations.

Important Considerations

Discontinuation Notice: This specific part number has been officially discontinued by Allen-Bradley (Rockwell Automation) as of February 2022. While surplus stock may still be available through secondary distributors, users should plan for future replacements or migration to newer series.
Ventilation: For optimal long-term performance, it is recommended to allow at least 5 mm of open space on each side of the relay for proper heat dissipation.
Wiring Safety: Always ensure power is disconnected before adjusting dials or performing wiring. The terminals are finger-safe, but proper torque should be applied to prevent loose connections.
Minimum Pulse Time: For pulse-controlled functions, ensure the input signal meets the minimum pulse duration requirements (typically $>$50 ms for AC and $>$30 ms for DC) to ensure reliable triggering.

Product Applications

The 700-FSM3UU23 is used across various industrial automation sectors where precise time-based control is required.

Motor Control: Implementing star-delta starting delays or sequence starting for multiple motors to prevent power surges.
Conveyor Systems: Managing delays between belt sections or controlling the duration of sorting mechanisms.
HVAC Systems: Controlling compressor cycle times or fan delays after heating/cooling cycles.
Packaging Machinery: Timing the duration of heat sealers, glue dispensers, or label application pulses.
Lighting and Signalling: Managing flashing sequences for warning lights or timed lighting in industrial facilities.

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