Mitsubishi Electric QX28

Technical specifications

Manufacturer

Mitsubishi Electric

Manufacturer part no.

QX28

Type

Digital input module

Application

I/O module

Used with

MELSEC-Q base units

Input type

AC input

Number of input points

8 points

Rated input voltage, frequency

100...240 V AC (+10/-15 %), 50/60 Hz (±3 Hz)

Input voltage distortion

Within 5 %

Rated input current

Approx. 17 mA (200 V AC, 60 Hz); Approx. 14 mA (200 V AC, 50 Hz); Approx. 8 mA (100 V AC, 60 Hz); Approx. 7 mA (100 V AC, 50 Hz)

Inrush current

Maximum 950 mA, within 1 ms (at 264 V AC)

ON voltage/ON current

80 V AC or more/5 mA or more (50 Hz, 60 Hz)

OFF voltage/OFF current

30 V AC or less/1.7 mA or less (50 Hz, 60 Hz)

Input impedance

Approx. 12 kΩ (60 Hz), approx. 15 kΩ (50 Hz)

Input response time, OFF to ON

10 ms or less (200 V AC 50 Hz, 60 Hz)

Input response time, ON to OFF

20 ms or less (200 V AC, 50 Hz, 60 Hz)

Input common terminal arrangement

8 points/common

Isolation method

Photocoupler

Dielectric withstand voltage

2830 V AC rms/3 cycles (altitude 2000 m)

Insulation resistance

10 MΩ or higher by insulation resistance tester

Protection degree

IP1X

Operation indication

ON indication (LED)

External interface,

18-point terminal block (M3 screw)

Number of occupied I/O points

16 points (I/O assignment: Input 16 points)

Internal current consumption (5 V DC)

50 mA (TYP. all points ON)

External dimensions, Height

98 mm

External dimensions, Width

27.4 mm

External dimensions, Depth

90 mm

Weight

0.20 kg

General specifications

Refer to the general specifications of the CPU module.

Technical documents (1)

• Mitsubishi Electric specification database, QX28

Key features

• Input type: AC input
• Number of input points: 8 points
• Rated input voltage, frequency: 100...240 V AC (+10/-15 %), 50/60 Hz (±3 Hz)
• Input voltage distortion: Within 5 %
• Inrush current: Maximum 950 mA, within 1 ms (at 264 V AC)

About the Mitsubishi Electric QX28

The Mitsubishi Electric QX28 is a MELSEC-Q input module. Mitsubishi Electric's overview: AC input: 8 points, 100...240 V AC, 17 mA (200 V AC, 60 Hz)/14 mA (200 V AC, 50 Hz)/8 mA (100 V AC, 60 Hz)/7 mA (100 V AC, 50 Hz), response time: 20 ms, 8 points/common, 18-point terminal block. Mitsubishi Electric names the RX28 as its replacement model.

What is the QX28 used for?

The QX28 mounts on a MELSEC-Q base unit and connects field signals to the CPU, which reads or writes them each cycle.

Lifecycle and successor

Phased out.

OEM successor: RX28

Before you order

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

Check the model name QX28 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.