FBs-40MCR2-AC Fatek PLC Main Unit

Model Code Explanation

Code Segment	Description
FBs	Prefix for standard Fatek PLC series
40	Total I/O points: 40 (24 inputs + 16 outputs)
MC	High-performance main unit, different from MA/MB economy type and MN high-speed NC type
R	Output type: Relay output. Large contact capacity, suitable for AC and DC loads
2	Mark for 2nd generation upgraded version
AC	Power supply: Wide voltage range 100~240VAC

Main Specifications

Category	Detailed Specifications
I/O Configuration	24-channel 24VDC digital inputs, 16-channel relay outputs
High-speed Inputs	6 channels @ 200KHz high-speed counting + 2 channels @ 20KHz medium-speed counting + 16 general inputs
High-speed Outputs	Relay outputs do not support high-speed pulse. Only transistor models (T/J) provide 6 channels @ 200KHz + 2 channels @ 20KHz
Communication Ports	Built-in 1 integrated RS232/USB port (Port0), expandable up to 5 communication ports in total
Program Memory	8KB (standard), expandable to 16KB
Data Memory	4KB (standard), expandable to 8KB
High-speed Counter	4 groups of Hardware High-speed Counters (HHSC), max. 200KHz; 4 groups of Software High-speed Counters (SHSC), max. 5KHz
Timers	0.1ms high-precision high-speed timers, supporting multiple timing modes
Instruction Set	Over 300 instructions, supporting multi-input & multi-output structures for high programming efficiency
Power Supply	100~240VAC, 50/60Hz, power consumption approx. 15W
Operating Environment	Temperature: -20~75°C; Humidity: 10~90%RH (non-condensing)
Dimensions	Standard DIN rail mounting, approx. 100×100×75mm (refer to official data for exact size)
Certifications	CE, UL certified, compliant with industrial safety standards

Cross-brand Equivalent Comparison

Brand	Equivalent Model	Main Differences
Siemens	S7-200 SMART SR40	FBs-40MCR2-AC features higher high-speed counting frequency (200KHz vs 100KHz) and a more streamlined instruction set
Mitsubishi	FX3U-40MR/ES-A	Fatek has built-in USB + RS232 dual ports (Mitsubishi requires extra expansion); Fatek delivers better high-speed counting performance
Omron	CP1E-N40DR-A	Larger program memory (8KB vs 6KB); stronger communication expansion capability (max. 5 ports)
Schneider Electric	M221C40R	More cost-effective; superior high-speed counting and pulse output performance

Full Model List of FBs-MC Series

Model	I/O Points	Output Type	Power Supply	Key Features
FBs-10MCR2-AC	10 (6IN/4OUT)	Relay	AC	Economy compact type, non-expandable
FBs-14MCR2-AC	14 (8IN/6OUT)	Relay	AC	Economy compact type, non-expandable
FBs-20MCR2-AC	20 (12IN/8OUT)	Relay	AC	Basic functional type, expandable
FBs-24MCR2-AC	24 (14IN/10OUT)	Relay	AC	Basic functional type, expandable
FBs-32MCR2-AC	32 (16IN/16OUT)	Relay	AC	High-performance type with built-in high-speed counting
FBs-40MCR2-AC	40 (24IN/16OUT)	Relay	AC	High-performance type, 6 channels 200KHz high-speed inputs
FBs-60MCR2-AC	60 (36IN/24OUT)	Relay	AC	High-performance type with large I/O capacity
FBs-40MCT2-AC	40 (24IN/16OUT)	Transistor (NPN)	AC	High-performance type, 6 channels 200KHz high-speed outputs
FBs-40MCJ2-AC	40 (24IN/16OUT)	Transistor (PNP)	AC	High-performance type with PNP output
FBs-40MCR2-D24	40 (24IN/16OUT)	Relay	DC24V	DC powered version

Common Faults & Troubleshooting

Fault Phenomenon	Possible Causes	Troubleshooting Steps
Power indicator off	Damaged power cable, faulty power module, abnormal input voltage	1. Check power cable and socket
		2. Verify input voltage within 100~240VAC
		3. Inspect bulging capacitors on power module
		4. Replace power module for test
No response at input points	Wrong wiring, defective sensor, faulty PLC input module	1. Check sensor power and wiring
		2. Measure input voltage (nominal 24VDC) with multimeter
		3. Replace sensor for test
		4. Check PLC input indicators
No action at output points	Wrong wiring, faulty load, damaged relay contacts	1. Check load power and wiring
		2. Measure output terminal voltage
		3. Replace load for test
		4. Check PLC output indicators
		5. Replace relay module (if applicable)
Communication failure	Mismatched communication parameters, faulty cable, damaged port	1. Check baud rate, data bits and parity bits
		2. Inspect cable connection and shielding
		3. Replace communication cable
		4. Check communication indicators
		5. Try alternative communication ports
Program loss	Low battery voltage, incomplete program saving, memory failure	1. Check battery voltage (≥3V required)
		2. Re-download program and save to EEPROM
		3. Replace battery
		4. Inspect memory module

Application & Industry Cases

Applicable Scenarios

Packaging Machinery: Control conveyors, cutting, labeling and other actions; realize precise counting and positioning via high-speed counting function
Textile Machinery: Control looms and knitting machines; support multi-axis synchronous operation
Food Processing: Manage filling, sealing and sterilization processes; execute scheduled tasks via built-in calendar
Machine Tool Control: Control spindle and feed of small machine tools for basic positioning
Building Automation: Regulate air conditioning, lighting and elevators; realize centralized monitoring via communication ports

Not Recommended Scenarios

High-precision high-speed positioning: Applications requiring pulse output over 200KHz (MN series recommended)
High-power load control: Single output load exceeding relay rated capacity (typically 2A/250VAC)
Severe electromagnetic interference: Environments without proper shielding, which may affect normal operation
Extreme temperature: Operating temperature beyond -20~75°C

Typical Application Cases

Case 1: Automatic Packaging Line Control System

Equipment: Automatic packaging machine, conveyor, labeler

Functions: Product counting, fixed-length film cutting, labeling position control, fault alarm

Highlights: Precise counting via 6-channel 200KHz high-speed inputs; HMI interaction via RS232 communication; scheduled production with built-in calendar

Case 2: Small Wastewater Treatment System

Equipment: Water pumps, valves, level sensors, pH sensors

Functions: Automatic pump start/stop based on liquid level; automatic chemical dosing according to pH value; automatic standby switch upon fault

Highlights: High-power pumps and valves controlled by relay outputs; data transmission to host computer via communication expansion modules; periodic backwashing via built-in timers

Selection Guidelines & Quick Reference Rules
Selection Tips: Match I/O points to demands; select output type by load (relay for AC/DC universal use, transistor for high-speed pulse); choose power supply per on-site condition; select series by functions (MC: high-performance, MA: economy, MN: high-speed positioning)
Quick Rules:

R = Relay, T = NPN Transistor, J = PNP Transistor

AC = AC power supply, D24 = 24VDC power supply

2 = 2nd generation with enhanced functions and stability

MC series is standard equipped with 200KHz high-speed counter and real-time calendar

Relay Output Specifications for FBs-40MCR2-AC

Output Type: Relay, 16 channels in total

Rated Current per Point: 2A (resistive load)

Rated Voltage Range:

AC: ≤ 250VAC

DC: ≤ 30VDC

Max. Resistive Load:

AC: 500VA (250V × 2A)