Programmable Logic ControllerKV Nano series


Base unit: AC power supply type, Input 24 points/output 16 points, Relay output


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General specifications

Supply voltage

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

Output power supply voltage

24 VDC (±10%; output capacity: 0.6 A)

Operating ambient temperature

0 to 55°C (no freezing)*1*2

Storage temperature

-25 to +75°C

Operating ambient humidity

5 to 95% RH (no condensation)*1

Withstand voltage

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

Noise immunity

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

Vibration resistance

Intermittent vibration

Frequency: 5 to 9 Hz

Amplitude: 3.5 mm*3*4

Frequency: 9 to 150 Hz

Acceleration: 9.8 m/s2*3*4

Continuous vibration

Frequency: 5 to 9 Hz

Amplitude: 1.75 mm*3*4

Frequency: 9 to 150 Hz

Acceleration: 4.9 m/s2*3*4

Shock resistance

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

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)

Operating environment

As little dust and corrosive gases as possible

Operating altitude

2000 m or less

Overvoltage category


Pollution degree


Performance specifications

Calculation control method

Programme storage method

I/O control method

Refresh method

Programming language

Expanded ladder, KV Script, mnemonic

Number of instructions

Basic instructions: 81 kinds and 182 instructions, Application instructions: 39 kinds and 56 instructions
Calculation instructions: 123 kinds and 311 instructions, Expansion instructions: 92 kinds and 141 instructions,
Total: 335 kinds 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 bits (T0 to T511)



256 points 32 bits (C0 to C255)

Data memory


32768 points 16 bits (DM0 to DM32767)

Link register


16384 points 16 bits (W0 to W3FFF)

Temporary memory


512 points 16 bits (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

counter comparator


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

Index register


12 points 32 bits (Z01 to Z12)

Control memory


9000 points 16 bits (CM0 to CM8999)

Base unit I/O

Input: 24 points, output: 16 points
Input common: 1 point, Output common: 6 points (R type)/2 points (T/TP type)

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

Device comment

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


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

Power off hold function

Programme 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 inputs/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)*9

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

Delay by input time constant
Input time constant setting 10 µs: Digital filter 1.6 to 2 µs
Input time constant setting 20 µs: Digital filter 9 to 12 µss
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

R500 to R515 (16 points)

Output mode


Rated load

250 VAC/30 VDC, 2 A

Common method

2 to 4 points/1 common

ON/OFF response time

10 ms or less

ON resistance

50m Ω or less

Minimum applicable load

100 µA/100 mVDC

Relay life

Electrical: 100000 cycles or more (20 cycles/minute), Mechanical: 20000000 cycles or more

Relay replacement


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

Number of transmission units



SD (green), RD (red)

Internal current consumption

86 VA
(VA is calculated with a power factor of 30%.)


Approx. 660 g

*1 The range guaranteed as a system (excluding items specially noted for the units and cassettes).
*2 The temperature below the unit centre (30 mm) 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. Number of scans: 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

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