Mitsubishi Electric QH42P

Technical specifications

Manufacturer

Mitsubishi Electric

Manufacturer part no.

QH42P

Type

Digital I/O module

Application

I/O module

Used with

MELSEC-Q base units

Input type

DC input (positive common type)

Number of input points

32 points

Rated input voltage

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

Rated input current

Approx. 4 mA

ON voltage/ON current

19 V or more/3 mA or more

OFF voltage/OFF current

11 V or less/1.7 mA or less

Input resistance

Approx. 5.6 kΩ

Input response time, OFF to ON

1 ms, 5 ms, 10 ms, 20 ms, 70 ms or less

Input response time, ON to OFF

1 ms, 5 ms, 10 ms, 20 ms, 70 ms or less

Input common terminal arrangement

32 points/common

Output type

Transistor output (sink type)

Number of output points

32 points

Rated load voltage

12...24 V DC (+20/-15 %)

Maximum load current

0.1 A/point, 2 A/common

Maximum inrush current

0.7 A, 10 ms or less

Leakage current at OFF

0.1 mA or less

Maximum voltage drop at ON

0.1 V DC (TYP.) 0.1 A, 0.2 V DC (MAX.) 0.1 A

Output response time, OFF to ON

1 ms or less

Output response time, ON to OFF

1 ms or less (rated load, resistive load)

Surge suppressor

Zener diode

Fuse

None

Protection function, Overheat protection function

Available

Protection function, Overload protection function

Available

External power supply, Voltage

12...24 V DC (+20/-15 %) (ripple ratio within 5 %)

External power supply, Current

Maximum 15 mA/common (at 24 V DC and all points ON)

Technical documents (1)

• Mitsubishi Electric specification database, QH42P

Key features

• Input type: DC input (positive common type)
• Number of input points: 32 points
• Rated input voltage: 24 V DC (+20/-15 %, ripple ratio within 5 %)
• Rated input current: Approx. 4 mA
• ON voltage/ON current: 19 V or more/3 mA or more

About the Mitsubishi Electric QH42P

The Mitsubishi Electric QH42P is a MELSEC-Q I/O module. Mitsubishi Electric's overview: DC input: 32 points, 24 V DC, 4 mA, response time: 1/5/10/20/70 ms, 32 points/common, positive common type,; transistor output: 32 points, 12...24 V DC, 0.1 A/point, 2 A/common, response time: 1 ms, 32 points/common, sink type, 40-pin connector x 2, number of occupied I/O points: 32 points. Mitsubishi Electric names the RH42C4NT2P as its replacement model.

What is the QH42P used for?

The QH42P 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: RH42C4NT2P

Before you order

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

Check the model name QH42P 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.