MU-N12 Model

Main Unit / Expansion Unit

This section provides specifications for the MU-N12 model.

Response Time

Depends on the connected sensor model. *1

Power Supply

• Voltage: 24 VDC, ripple (P-P) 10% or less, Class 2 or LPS
• Current Consumption: 55 mA or less (no load) *2

I/O

Control Output

4 max., NPN collector open/PNP collector open selectable, 24 V or less, Main Unit: 50 mA or less *3, Expansion Unit: 20 mA or less, Residual Voltage: 2 V or less, N.O./N.C. selectable *1 *4

External Input

5 max., Short-circuit Current: NPN: 1 mA or less, PNP: 2 mA or less, For applied voltage, see wiring diagrams (page 3 of the instruction manual) *1 *4

Analog Output

-

Protection Circuit

Protection against reverse power connection, power surges, output overcurrent, output spikes, and reverse output connection

Expansion Units

Up to 4 expansion units *5

Sensor Connection Specification

• Sensor Allowable Current: 150 mA or less

N-bus Connection Specification

• Pass Current Allowable: 900 mA or less

Environmental Resistance

• Ambient Temperature: -20 to +50 °C (-4 to 122 °F) (No freezing)
• Relative Humidity: 35 to 85% HR (No condensation)

Vibration Resistance

10 to 55 Hz, Double Amplitude 1.5 mm (0.06"), 2 hours in each of the X, Y, and Z directions

Shock Resistance

1,000 m/s², 6 times in each of the X, Y, and Z directions

Material

• Case and Dust Cover: Polycarbonate
• Buttons: Polyacetal
• Display: PMMA

Weight

Approx. 70 g

Notes

• *1 The response time, as well as the types and number of inputs and outputs available, vary depending on the connected sensor model. For more information, refer to the "MU-N Series User Manual" specific to the model being connected.
• *2 1185 mA or less when a sensor is connected, 4 outputs (with load) are used, and expansion units are connected.
• *3 20 mA or less: When using the expansion unit.
• *4 For more information about the control output, external input, and analog output cable assignment, please refer to the "Power Supply Cable Pin Assignment" table on page 3 of this manual.
• *5 Up to 5 N-bus devices, including the main unit (or network unit), can be linked.