Programmable Logic Controller

KV Nano series

Catalogs View Catalog

Base Unit, AC power supply type, Input 24 points/output 16 points, transistor (source) output KV-N40ATP

KV-N40ATP - Base Unit, AC power supply type, Input 24 points/output 16 points, transistor (source) output

  • CE Marking
  • UL Listing(c/us)




General specifications

Power voltage

100 to 240 VAC (+10%/-15%)

Operating ambient temperature

0 to 55°C 32 to 131°F (no freezing)*1 *2

Operating ambient humidity

5 to 95% RH (no condensation)*1

Operating environment

As little dust and corrosive gas as possible

Noise immunity

1500 V peak-to-peak or more, pulse duration 1 μs, 50 ns (based on noise simulator), IEC standard compliant (IEC61000-4-2/3/4/6)

Withstand voltage

1500 VAC for 1 minute, between power supply terminal and I/O terminals and between all external terminals and case

Insulation resistance

50 MΩ or more (500 VDC megger used to perform measurements between power terminal and input terminals, and between all external terminals and case)

Output power supply voltage

24 VDC (±10%; output capacity: 0.6 A)

Storage temperature

−25 to +75°C −13 to +167°F

Vibration resistance

Intermittent vibration

Frequency: 5 to 9 Hz

Amplitude: 3.5 mm 0.14"*3*4

Frequency: 9 to 150 Hz

Acceleration: 9.8 m/s2 32.2'/s2*3*4

Continuous vibration

Frequency: 5 to 9 Hz

Amplitude: 1.75 mm 0.07"*3*4

Frequency: 9 to 150 Hz

Acceleration: 4.9 m/s2 16.1'/s2*3*4

Shock resistance

Acceleration: 150 m/s2 492.1'/s2, application time: 11 ms, three times in each of the X, Y, and Z directions

Operating altitude

2000 m 6561.7' or less

Overvoltage category


Pollution degree


Performance specifications

Calculation control method

Program storage method

I/O control method

Refresh method

Program language

Expanded ladder, KV Script, mnemonic

Number of instructions

Basic instruction: 81 types and 182 instructions, Application instruction: 39 types and 56 instructions
Calculation instruction: 123 types and 311 instructions, Expansion instruction: 92 types and 141 instructions, Total: 335 types and 690 instructions

Instruction execution speed

Basic instruction: 50 ns minimum, Application instruction: 170 ns minimum

Program capacity

16k steps

Maximum number of attachable I/O units


Maximum number of I/O points

256 (excluding the base unit I/O)

Input relay/Output relay/Internal auxiliary relay


Total of 9600 points 1 bit (R000 to R59915)

Link relay


8192 points 1 bit (B0 to B1FFF)

Internal auxiliary relay


9600 points 1 bit (MR000 to MR59915)

Latch relay


3200 points 1 bit (LR000 to LR19915)

Control relay


1440 points 1 bit (CR000 to CR8915)



512 points 32 bit (T0 to T511)



256 points 32 bit (C0 to C255)

Data memory


32768 points 16 bit (DM0 to DM32767)

Link register


16384 points 16 bit (W0 to W3FFF)

Temporary memory


512 points 16 bit (TM0 to TM511)

High-speed counter


3 points (CTH0 to CTH2), 32-bit automatic reset counter*5(Input response: 100 kHz per single phase, 50 kHz per phase difference)*6

High-speed counter comparator


6 points (CTC0 to CTC5), 32 bits, two points per high-speed counter

Index register


12 points 32 bit (Z01 to Z12)

Control memory


9000 points 16 bit (CM0 to CM8999)

Positioning pulse output

3 axes, Maximum output frequency: 100 kHz

Base unit I/O

Input: 24 points, output: 16 points, Input common: 1 point, Output common: 2 points

Number of comments and labels that can be stored in the main unit

Device comment

When a maximum-length ladder program is written with no labels.


When a maximum-length ladder program is written with no device comments.

Power off hold function

Program memory

Flash ROM can be rewritten 10000 times


Nonvolatile RAM*7

Self-diagnosis function

CPU error, RAM error, and other problems

Input specifications

Relay number

General input: R000 to R007, R014 to R107 (18 points)
High-speed A-phase and B-phase input: R008 to R013 (3 channels, 6 points in total)

Input mode

24 VDC input (open collector)

Maximum input voltage

26.4 VDC

Rated input voltage

24 VDC (General input: 5.3 mA, High-speed A-phase and B-phase input: 6.5 mA*8)

Minimum ON voltage

19 VDC

Maximum OFF current

1.5 mA

Common method

General input: All points/1 common (1 terminal), High-speed A-phase and B-phase input: Shared common for all points (shared with general input)

Circuit delay time

General input:
OFF to ON: Max. 30 μs (Typ. 3.5 μs), ON to OFF: Max. 50 μs (Typ. 15 μs)
High-speed A-phase and B-phase input:
OFF to ON: Max. 2 μs (Typ. 1.1 μs), ON to OFF: Max. 2 μs (Typ. 0.3 μs)

Input time constant

Normal: 10 ms, When the HSP instruction is used: 10 μs
When CR2305 is turned ON: 10 μs to 10 ms, eight-level switching is possible (set with CM1620). Can also be set from the Unit Editor.*9

Input time constant setting 10 µs: Digital filter 1.6 to 2 µs
Input time constant setting 20 µs: Digital filter 9 to 12 µs
Input time constant setting 110 µs: Digital filter 90 to 93 µs
Input time constant setting 500 µs: Digital filter 300 to 400 µs
Input time constant setting 1 ms: Digital filter 800 to 900 µs
Input time constant setting 2.5 ms: Digital filter 2.3 to 2.4 ms
Input time constant setting 5 ms: Digital filter 4.0 to 4.5 ms
Input time constant setting 10 ms: Digital filter 9 to 9.5 ms

Response frequency

(High-speed A-phase and B-phase input) Single phase: 100 kHz, phase difference: 50 kHz, 24 V ±10%, Duty 50%

Output specifications

Relay number

General output: R506 to R515 (10 points), High-speed output: R500 to R505 (6 points)

Output mode


Rated load

30 VDC, 0.5 A

Maximum OFF voltage

30 VDC

Leakage current at OFF

100 μA or less

Residual voltage at ON

0.8 VDC or less (with 0.5 A output), 0.6 VDC or less (with 0.3 A output)

Common method

8 to 10 points/1 common

ON/OFF response time

General output:
OFF to ON: 100 μs (load of 1 mA or more), ON to OFF: 200 μs (load of 1 mA or more)
High-speed output:
OFF to ON: 2 μs (7 to 100 mA load), ON to OFF: 5 μs (7 to 100 mA load)

Overcurrent protection

Protection provided for each common*11

Output frequency

High-speed output: 100 kHz (7 to 100 mA load)

Built-in serial port


Communication standard



Modular connector

Transmission specifications RS-232C

Baud rate

1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps

Transmission method

Full duplex

Data format

Start bit

1 bit

Data bits

7 bits, 8 bits

Stop bits

1 bit, 2 bits

Error detection


Even, odd, none

Transmission distance

15 m 49.2'

Number of transmission units



SD (green), RD (red)

Internal current consumption

82 VA


Approx. 620 g

*1 The range guaranteed as a system (excluding items specially noted for the units and cassettes).
*2 The temperature below the unit center (30 mm 1.18") inside a control panel.
*3 These specifications correspond to situations in which the unit is mounted on a DIN rail and in which the unit is mounted on the panel directly.
*4 Conforms to JIS B 3502 and IEC61131-2, Scan times: 10 times (100 minutes) in each of the X, Y, and Z directions
*5 You can also configure the settings so that automatic reset is not used.
*6 Only open collectors are supported. Line drivers are not supported.
*7 You can set the target device by clicking “CPU system setting” and then “Power off holding” in KV STUDIO.
*8 Reference value of input current.
*9 The input response time corresponding to the input time constant can be calculated as shown below. (Response time) = (Circuit delay of the input circuit) + (Delay by the digital filter)
Example: Maximum response time when the input time constant is set to 500 μs
OFF to ON: 30 μs (circuit delay) + 400 μs (digital filter) = 430 μs
ON to OFF: 50 μs (circuit delay) + 400 μs (digital filter) = 450 μs
*10 MOSFET (P-ch) output for the source output type.
*11 If an overcurrent occurs, the protection operation (output turned OFF) and automatic recovery are repeated for all outputs within the shared common until the cause of the problem is removed.

Other Models