Mitsubishi Electric QX90H

Technical specifications

Manufacturer

Mitsubishi Electric

Manufacturer part no.

QX90H

Type

Digital input module

Application

I/O module

Used with

MELSEC-Q base units

Input type

DC input (negative common type)

Number of input points

16 points

Rated input voltage

5 V DC (+20/-15 %, ripple ratio within 5 %)

Rated input current

Approx. 6 mA

Maximum number of simultaneous input points

100 %

ON voltage/ON current

3.5 V or more/3 mA or more

OFF voltage/OFF current

1 V or less/1 mA or less

Input resistance

Approx. 470 Ω

Input response time, Response time setting

Invalid ( noise filter selector switch (SW1): OFF); 0.1 ms, 0.2 ms, 0.4 ms, 0.6 ms, 1 ms ( noise filter selector switch (SW1): ON)

Input response time, OFF to ON

0 ms (TYP.); (Noise filter selector switch (SW1): OFF); ; 0.04 ms, 0.10 ms, 0.25 ms, 0.50 ms, 0.95 ms (TYP.); 0.05 ms, 0.15 ms, 0.30 ms, 0.60 ms, 1.00 ms (MAX.); (Noise filter selector switch (SW1): ON)

Input response time, ON to OFF

0 ms (TYP.); (Noise filter selector switch (SW1): OFF); ; 0.04 ms, 0.10 ms, 0.25 ms, 0.50 ms, 0.95 ms (TYP.); 0.05 ms, 0.15 ms, 0.30 ms, 0.60 ms, 1.00 ms (MAX.); (Noise filter selector switch (SW1): ON)

Input common terminal arrangement

8 points/common

Isolation method

Photocoupler

Dielectric withstand voltage

560 V AC rms/3 cycles (altitude 2000 m)

Insulation resistance

10 MΩ or higher by insulation resistance tester

Protection degree

IP2X

Operation indication

ON indication (LED)

External interface,

18-point terminal block (M3 screw)

Number of occupied I/O points

16 points (I/O assignment: Hi. Input 16 points / Interrupt 16 points)

Interrupt processing condition

Set by setting the CPU parameter switch.

Internal current consumption (5 V DC)

80 mA (TYP. all points ON)

External dimensions, Height

98 mm

External dimensions, Width

27.4 mm

External dimensions, Depth

90 mm

Weight

0.14 kg

Technical documents (1)

• Mitsubishi Electric specification database, QX90H

Key features

• Input type: DC input (negative common type)
• Number of input points: 16 points
• Rated input voltage: 5 V DC (+20/-15 %, ripple ratio within 5 %)
• Rated input current: Approx. 6 mA
• Maximum number of simultaneous input points: 100 %

About the Mitsubishi Electric QX90H

The Mitsubishi Electric QX90H is a MELSEC-Q input module. Mitsubishi Electric's overview: DC input: 16 points, 5 V DC 6 mA, response time: 0/0.1/0.2/0.4/0.6/1 ms, 8 points/common, negative common type, 18-point terminal block. Mitsubishi Electric lists it as discontinued since 2024/09, with repair support until 2031/09. Mitsubishi Electric names the RX61C6HS as its replacement model.

What is the QX90H used for?

The QX90H mounts on a MELSEC-Q base unit and connects field signals to the CPU, which reads or writes them each cycle.

Lifecycle and successor

Discontinued.

OEM successor: RX61C6HS

Before you order

What to photograph or confirm so the right unit is quoted.

Check the model name QX90H on the rating plate, with the serial number and function version. Send us a photo of the rating plate and we will confirm the details before quoting.