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PLC MELSEC-QS Series Safety Sequencer CPU Unit (Part Numbers)

PLC MELSEC-QS Series Safety Sequencer CPU Unit

- PLC MELSEC-QS Safety programmable controller by Mitsubishi Electric.
- Reduced cost, increased diagnostics, and flexibility through replacement of hardwired safety relay panels.
- Simple engineering of systems which integrate machine and safety control.
- Easy error/failure troubleshooting and provides full traceability for later analysis.
- Same efficient debugging capabilities as MELSEC-Q Series
- Scalable to a wide variety of system sizes.
- CC-Link Safety allows flexible network wiring.
- Possibility of further reduction in wiring.
- Application examples: Automotive welding line, Automotive painting line.

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Part Number

Configured Part Number is shown.

QS001CPU

MELSEC-QS Series Safety Sequencer CPU Unit Specifications

QS001CPU

QS001CPU image

QS001CPU image

QS001CPU Performance Specifications

Control MethodStored Program Repeating Operation
Input/Output Control MethodRefresh Method
Programming LanguageSequence Control LanguageRelay symbol language, Function block
Processing SpeedSequence InstructionLD X00.10 μs
MOV D0 D10.35 μs
Constant Scan1 to 2,000 ms (can be set in 1 ms intervals)
Program Capacity14 K steps (56 K bytes)
Memory CapacityProgram Memory (Drive 0)128 K bytes
Standard ROM (Drive 4)128 K bytes
Maximum File Storage CapacityProgram Memory3 pcs.
Standard ROM3 pcs.
Number of Writing Times of Standard ROMMax. 100,000 times
Number of Input/Output Devices6,144 points (X/Y0 to 17FF)
Number of Inputs/Outputs1,024 points (X/Y0 to 3FF)
Number of DevicesInternal Relay [M]Default 6,144 points (M0 to 6,143) (variable)
Link Relay [B]Default 2,048 points (B0 to 7FF) (variable)
Timer [T]Default 512 points (T0 to 511) (Low-speed timer / High-speed timer shared) (variable)
Low-speed timer / High-speed timer is specified by command
Measurement unit of Low-speed timer / High-speed timer is set by a parameter
(Low-speed timer: 1 to 1,000 ms, 1 ms interval, Default 100 ms)
(High-speed timer: 0.1 to 100.0 ms, 0.1 ms interval, Default 10.0 ms)
Integration Timer [ST]Default 0 point (Low-speed integration timer / High-speed integration timer shared) (variable)
Low-speed integration timer / High-speed integration timer is specified by command
Measurement unit of Low-speed integration timer / High-speed integration timer is set by a parameter
(Low-speed integration timer: 1 to 1,000 ms, 1 ms interval, Default 100 ms)
(High-speed integration timer: 0.1 to 100.0 ms, 0.1 ms interval, Default 10.0 ms)
Counter [C]Normal counter: Default 512 points (C0 to 511) (variable)
Data Register [D]Default 6,144 points (D0 to 6,143) (variable)
Link Register [W]Default 2,048 points (W0 to 7FF) (variable)
Annunciator [F]Default 1,024 points (F0 to 1,023) (variable)
Edge Relay [V]Default 1,024 points (V0 to 1,023) (variable)
Link Special Relay [SB]1,536 points (SB0 to 5FF) (The number of device point is fixed.)
Link Special Register [SW]1,536 points (SW0 to 5FF) (The number of device point is fixed.)
Special Relay [SM]5,120 points (SM0 to 5,119) (The number of device points is fixed.)
Special Register [SD]5,120 points (SD0 to 5,119) (The number of device points is fixed.)
RUN/PAUSE Contact1 point of RUN contact can be set from X0 to 17FF
No PAUSE contact
Clock FunctionYear, month, day, hour, minutes, seconds, day of the week (Leap years are automatically detected.)
Accuracy: -3.18 to +5.25 s (TYP. +2.14 s)/d at 0°C
Accuracy: -3.18 to +2.59 s (TYP. +2.07 s)/d at 25°C
Accuracy: -12.97 to +3.63 s (TYP. -3.16 s)/d at 55°C
Allowable Momentary Power Loss TimeAccording to the power supply unit
5 V DC Internal Current Consumption0.58 A
External DimensionsHeight (H)98 mm
Width (W)55.2 mm
Depth (D)114 mm
Weight0.29 kg
Protection GradeIP2X

QS001CPU General Specifications

Ambient Operating Temperature0 to 55°C
Ambient Storage Temperature-40 to 75°C
Ambient Operating Humidity5 to 95% RH, non-condensing
Ambient Storage Humidity5 to 95% RH, non-condensing
Vibration ResistanceJIS B 3502, IEC 61131-2 Compatible
Part Number
QS001CPU
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to Ship

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Basic Information

Maximum Number of Inputs/Outputs(Point) 1024 Number of input/output devices(Point) 6144 Program size(k step) 14
RS232 USB Ethernet ×
Computer Link × CC-Link × EFI ×
Noted Points for Power Supplies NA CE UL
Basic Command Processing Speed (LD Command)(μs) 0.1 Note Can build safe sequencer systems. Equipped with a safe CPU operation mode for the purpose of safely operating systems. Can connect with PCs and general sequencers.

Please check the type/dimensions/specifications of the part QS001CPU in the PLC MELSEC-QS Series Safety Sequencer CPU Unit series.

  • The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Tech Support

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