F3SP28-3N Yokogawa Sequence CPU Module

F3SP28-3N Yokogawa FA-M3 Sequence Controller CPU Module

F3SP28-3N Yokogawa FA-M3 Sequence Controller CPU Module

Availability: 20 left in stock

Yokogawa F3SP28-3N Sequence CPU Module The Yokogawa F3SP28-3N, also cataloged as the F3SP28-3N Sequence CPU Module, operates as a dedicated...

SKU: F3SP28-3N

Manufacturer: Yokogawa
Product No.: F3SP28-3N
Product Type: CPU Processors
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 110g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa F3SP28-3N Sequence CPU Module

The Yokogawa F3SP28-3N, also cataloged as the F3SP28-3N Sequence CPU Module, operates as a dedicated hardware component for high-speed sequence control and ladder logic execution within FA-M3V controller platforms.

Hardware Specifications

Parameter	Specification
Model	F3SP28-3N
Brand	Yokogawa
Origin	Japan
Weight	0.11 kg
Dimensions	33 mm (W) x 102 mm (H) x 89 mm (D)
Operating Temp	0 to 55 deg C
Power Consumption	Standard backplane power from FA-M3 base unit
Controller Series	FA-M3V / FA-M3
Instruction Execution Speed	0.045 us per basic instruction
Program Capacity	30K ladder steps
Scan Time	1 ms for 6,000 steps
I/O Capacity	Up to 4,096 local and remote points
Memory Architecture	Integrated Flash memory plus RAM
Communication Interfaces	Ethernet, RS-232C, RS-485
Diagnostics	RUN, ALARM, and ERROR LED indicators
Operating Humidity	5 to 95% RH (non-condensing)
Mounting	FA-M3 backplane base unit slot

Backplane Bus Communication & Firmware Execution

The Yokogawa F3SP28-3N processes discrete automation tasks using a 0.045 us basic instruction execution engine. High-speed backplane bus communication velocity allows the CPU module to update up to 4,096 local and remote I/O channels with a scan cycle time of 1 ms per 6,000 ladder steps. Program logic stores within non-volatile onboard Flash memory, eliminating logic loss during power supply interruptions, while internal RAM handles dynamic data register buffering and real-time task allocation across the FA-M3 system bus.

Frequently Asked Questions

Q: How does the F3SP28-3N retain program logic and data registers during power outages?

A: Logic instructions persist in internal non-volatile Flash memory without external power, while dynamic data registers and real-time clock (RTC) states require an operational lithium backup battery installed on the CPU module.

Q: Can the CPU module be inserted or removed while the FA-M3 base unit is powered on?

A: No, inserting or removing the F3SP28-3N CPU module while the base unit power supply is active causes backplane bus errors and risks electrical damage to the CPU logic board.

Q: What diagnostic indicators report system status during execution faults?

A: Front-panel RUN, ALARM, and ERROR LEDs signal execution states. A solid or flashing ERROR LED pinpoints instruction errors, hardware failures, or backplane bus communication interruptions.

Field Installation Guidelines

Field engineers must carry out standard handling and setup routines when installing or replacing the F3SP28-3N CPU module:

De-energize the FA-M3 base unit power supply before seating the CPU module into its designated primary controller slot.
Align the top and bottom module guide rails carefully with the backplane connector before pushing the unit firmly into place until the locking lever engages.
Establish proper enclosure grounding to maintain shielding performance and reduce high-frequency electromagnetic interference along field communication lines.
Route serial RS-232C/RS-485 cables and Ethernet communication runs in separate cable trays away from high-voltage AC power wiring and motor lead channels.

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