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MELSEC-Q Series Input Unit (DC Negative Common)

MELSEC-Q Series Input Unit (DC Negative Common)

An input unit (DC minus common) for the versatile MELSEC-Q series

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QX80 Specifications

Input FormatDC Input (negative common type)
Number of Inputs16 points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 4 mA
Input DeratingN/A
ON Voltage / ON Current19 V or more / 3 mA or more
OFF Voltage / OFF Current11 V or less / 1.7 mA or less
Input ResistanceApprox. 5.6 kΩ
Input Response TimeOFF > ON1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
ON > OFF1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
Input Common Method16 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method18-point screw terminal block (M3 Screw)
Number of Occupied Inputs/Outputs16 points (I/O assignment: input 16 points)
5 V DC Internal Current Consumption50 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.16 kg

QX80-TS Specifications

Input FormatDC Input (negative common type)
Number of Inputs16 points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 4 mA
Input DeratingN/A
ON Voltage / ON Current19 V or more / 3 mA or more
OFF Voltage / OFF Current11 V or less / 1.7 mA or less
Input ResistanceApprox. 5.6 kΩ
Input Response TimeOFF > ON1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
ON > OFF1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
Input Common Method16 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method18-point 2-piece spring clamp terminal block
Number of Occupied Inputs/Outputs16 points (I/O assignment: input 16 points)
5 V DC Internal Current Consumption50 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.16 kg

QX81 Specifications

Input FormatDC Input (negative common type)
Number of Inputs32 Points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 4 mA
ON Voltage / ON Current19 V or more / 3 mA or more
OFF Voltage / OFF Current11 V or less / 1.7 mA or less
Input ResistanceApprox. 5.6 kΩ
Input Response TimeOFF > ON1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
ON > OFF1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
Input Common Method32 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method37-pin D-sub Connector
 Compatible ConnectorA6CON1E, A6CON2E, A6CON3E (sold separately)
Number of Occupied Inputs/Outputs32 points (I/O assignment: input 32 points)
5 V DC Internal Current Consumption75 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.16 kg

Input Derating

Input derating graph

Input derating graph

QX81-S2 Specifications

Input FormatDC Input (negative common type)
Number of Inputs32 Points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 6 mA
ON Voltage / ON Current15 V or more / 3 mA or more
OFF Voltage / OFF Current5 V or less / 1.7 mA or less
Input ResistanceApprox. 3.6 kΩ
Input Response TimeOFF > ON1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
ON > OFF1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
Input Common Method32 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method37-pin D-sub Connector
 Compatible ConnectorA6CON1E, A6CON2E, A6CON3E (sold separately)
Number of Occupied Inputs/Outputs32 points (I/O assignment: input 32 points)
5 V DC Internal Current Consumption75 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.16 kg

Input Derating

Input derating graph

Input derating graph

QX82 Specifications

Input FormatDC Input (negative common type)
Number of Inputs64 points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 4 mA
ON Voltage / ON Current19 V or more / 3 mA or more
OFF Voltage / OFF Current11 V or less / 1.7 mA or less
Input ResistanceApprox. 5.6 kΩ
Input Response TimeOFF > ON1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
ON > OFF1 ms / 5 ms / 10 ms / 20 ms / 70 ms or less
Input Common Method32 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
32-point switch display by SW
External Wiring Connection Method40-pin connector × 2
 Compatible ConnectorA6CON1, A6CON2, A6CON3, A6CON4 (sold separately)
Number of Occupied Inputs/Outputs64 points (I/O assignment: input 64 points)
5 V DC Internal Current Consumption90 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.18 kg

Input Derating

Input derating graph

Input derating graph

QX82-S1 Specifications

Input FormatDC Input (negative common type)
Number of Inputs64 points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 4 mA
ON Voltage / ON Current19 V or more / 3 mA or more
OFF Voltage / OFF Current9.5 V or less / 1.5 mA or less
Input ResistanceApprox. 5.6 kΩ
Input Response TimeResponse Time Setting0.1 ms / 0.2 ms / 0.4 ms / 0.6 ms / 1 ms
OFF > ONTYP.0.05 ms / 0.15 ms / 0.30 ms / 0.55 ms / 1.05 ms
MAX.0.12 ms / 0.20 ms / 0.40 ms / 0.60 ms / 1.20 ms
ON > OFFTYP.0.15 ms / 0.20 ms / 0.35 ms / 0.60 ms / 1.10 ms
MAX.0.20 ms / 0.30 ms / 0.50 ms / 0.70 ms / 1.30 ms
Input Common Method32 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
32-point switch display by SW
External Wiring Connection Method40-pin connector × 2
 Compatible ConnectorA6CON1, A6CON2, A6CON3, A6CON4 (sold separately)
Number of Occupied Inputs/Outputs64 points (I/O assignment: input 64 points)
5 V DC Internal Current Consumption90 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.18 kg

Input Derating

Input derating graph

Input derating graph

QX80H Specifications

Input FormatDC Input (negative common type)
Number of Inputs16 points
Rated Input Voltage24 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 6 mA
ON Voltage / ON Current13 V or less / 3 mA or less
OFF Voltage / OFF Current8 V or less / 1.6 mA or less
Input ResistanceApprox. 3.9 kΩ
Input Response TimeSW1 (Noise Filter)OFF / ON
Response Time SettingDisabled / 0.1 ms / 0.2 ms / 0.4 ms / 0.6 ms / 1 ms
OFF > ONTYP.0 ms / 0.04 ms / 0.10 ms / 0.25 ms / 0.50 ms / 0.95 ms
MAX.- / 0.05 ms / 0.15 ms / 0.30 ms / 0.60 ms / 1.00 ms
ON > OFFTYP.0 ms / 0.04 ms / 0.10 ms / 0.25 ms / 0.50 ms / 0.95 ms
MAX.- / 0.05 ms / 0.15 ms / 0.30 ms / 0.60 ms / 1.00 ms
Function SettingSW2OFF: Interruption
ON: High-speed Input
Input Common Method8 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method18-point screw terminal block (M3 Screw)
Number of Occupied Inputs/Outputs16 points (I/O assignment: high-speed input 16 points / interruption 16 points)
Interruption Processing ConditionConfiguration by switch settings of the CPU parameters
5 V DC Internal Current Consumption80 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.16 kg

Input Derating

Input derating graph

Input derating graph

QX90H Specifications

Input FormatDC Input (negative common type)
Number of Inputs16 points
Rated Input Voltage5 V DC (+20/-15%, ripple ratio within 5%)
Rated Input CurrentApprox. 6 mA
Input DeratingN/A
ON Voltage / ON Current3.5 V or more / 3 mA or more
OFF Voltage / OFF Current1 V or less / 1 mA or less
Input ResistanceApprox. 470 Ω
Input Response TimeSW1 (Noise Filter)OFF / ON
Response Time SettingDisabled / 0.1 ms / 0.2 ms / 0.4 ms / 0.6 ms / 1 ms
OFF > ONTYP.0 ms / 0.04 ms / 0.10 ms / 0.25 ms / 0.50 ms / 0.95 ms
MAX.- / 0.05 ms / 0.15 ms / 0.30 ms / 0.60 ms / 1.00 ms
ON > OFFTYP.0 ms / 0.04 ms / 0.10 ms / 0.25 ms / 0.50 ms / 0.95 ms
MAX.- / 0.05 ms / 0.15 ms / 0.30 ms / 0.60 ms / 1.00 ms
Function SettingSW2OFF: Interruption
ON: High-speed Input
Input Common Method8 points 1 common
Insulation MethodOpto-isolator insulation
Dielectric Strength560 V AC rms / 3 cycles (altitude 2,000 m)
Insulation Resistance10 MΩ or more on an ohmmeter
Protection GradeIP2X
Operation DisplayON Display (LED)
External Wiring Connection Method18-point screw terminal block (M3 Screw)
Number of Occupied Inputs/Outputs16 points (I/O assignment: high-speed input 16 points / interruption 16 points)
Interruption Processing ConditionConfiguration by switch settings of the CPU parameters
5 V DC Internal Current Consumption80 mA (TYP. all points ON)
External DimensionsHeight (H)98 mm
Width (W)27.4 mm
Depth (D)90 mm
Weight0.14 kg
Part Number
QX80
QX81-S2
QX82
QX82-S1
Part NumberMinimum order quantityVolume DiscountDays to ShipNumber Of Inputs Features Number Of Inputs
(Point)
Rated input current
(mA)
Input answer time Terminal shape Number of occupied input/outputs
(Point)
1 Piece(s) 14 Day(s) 1616-point 1-common16Approximately 4 mA1/5/10/20/7018-point terminal block16
1 Piece(s) 14 Day(s) 3232-point 1-common32Approximately 6mA1/5/10/20/7037-Pin D-Sub Connector32
1 Piece(s) 14 Day(s) 6432-point 1-common64Approximately 4 mA1/5/10/20/7040-Pin Connector × 264
1 Piece(s) 14 Day(s) 6432-point 1-common64Approximately 4 mA0.1/0.2/0.4/0.6/140-Pin Connector × 264

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Basic Information

Rated Input Voltage(V) DC24 Representative Standard CE / UL

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