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Industrial Automation

Industrial Automation

Discontinued On Mar. 2023




DIN 48 × 48 mm Socket-type Tachometer with a Bright, Easy-to-view, Backlit Negative Transmissive LCD

* Information in this page is a reference that you created on the basis of information in the product catalog before the end of production, may be different from the current situation, such as goods for / supported standards options / price / features of the product. Before using, please check the compatibility and safety system.


Classification Tachometer
Model H7CX-R11[]-N H7CX-R11W[]-N
Input mode 1 input only 2 inputs only
Ratings Power supply
voltage *1
100 to 240 VAC, 50/60 Hz
12 to 24 VDC or 24 VAC, 50/60 Hz
Operating voltage
fluctuation range
85% to 110% of rated supply voltage (90% to 110% at 12 to 24 VDC)
Approx. 9.4 VA at 100 to 240 VAC, Approx. 7.2 VA/4.7 W at 24 VAC/12 to 24 VDC, Approx. 3.7 W at
12 to 24 VDC
Mounting method Flush mounting or surface mounting
External connections 11-pin socket
Degree of protection IEC IP66, UL508 Type 4 (indoors) for panel surface only and when Y92S-29 Waterproof Packing is used
Input signals Count and hold Count 1 and count 2
Pulse measurement method Tachometer mode
(cycle measurement)
AMD-compatible mode
(continuous measurement)
Tachometer mode
(cycle measurement)
Maximum counting speed 30 Hz
(minimum pulse
width: 16.7 ms)
10 kHz
(minimum pulse
width: 0.05 ms)
--- 30 Hz (minimum pulse
width: 16.7 ms) or
5 kHz (minimum pulse
width: 0.1 ms)
Minimum input signal width --- 10 ms 1 ms ---
Measuring ranges 0.001 Hz to 30.00Hz 0.001 Hz to 10 kHz 0.026 to 999999 s 0.003 to 999999 s 0.01 to 5k Hz
Sampling cycle 200 ms min. Continuous measurement
(minimum interval of 10 ms)
200 ms min.
Display refresh cycle Input pulse of 5 Hz min.
Averaging not used: 200 ms
Averaging used: 200 multiplied by the averaging setting (ms)
Input pulse of less than 5 Hz
Averaging not used: Two times the maximum input pulse cycle
Using averaging: Two times the maximum of the input pulse cycle multiplied by the averaging setting.
Measuring accuracy ±0.1% FS ±1 digit max. (at 23 ±5°C)
Output mode HI-LO, AREA, HI-HI, LO-LO HI-HI, LO-LO
Auto-zero time 0.1 to 999.9 s (in Tachometer Mode)
Startup time 0.0 to 99.9 s
Averaging Simple averaging/moving averaging selectable, Number of times: OFF, 2, 4, or 8 times
Prescaling function 0.001 to 99.999 (in Tachometer Mode)
Decimal point adjustment Rightmost 3 digits ---
Sensor waiting time 290 ms max. (Control output is turned OFF and no input is accepted during sensor waiting time.)
Input Input method No-voltage (NPN) input/voltage (PNP) input (switchable)
No-voltage Input
Impedance when ON: 1 kΩ max. (Leakage current: 12 mA when 0 Ω)
ON residual voltage: 3 V max.
Impedance when OFF: 100 kΩ min.
Voltage Input
High (logic) level: 4.5 to 30 VDC
Low (logic) level: 0 to 2 VDC (Input resistance: approx. 4.7 kΩ)
Hold input Minimum input signal width: 20 ms ---
External power supply 12 VDC (±10%), 100 mA
* Refer to Safety Precautions (Common) on Data Sheet for details.
Control output Contact output: 3 A at 250 VAC/30 VDC, resistive load (cosφ=1)
Minimum applied load:10 mA at 5 VDC (failure level: P, reference value)
Display *2 7-segment, negative transmissive LCD
Character height
Present value: 10 mm (red), comparison value: 6 mm (green)
Digits 6 digits (0 to 999999)
Memory backup EEPROM (overwrites: 100,000 times min.) that can store data for 10 years min.
Operating temperature
-10 to 55°C (-10 to 50°C if Counter/Tachometers are mounted side by side) (with no icing or condensation)
Storage temperature range -25 to 70°C (with no icing or condensation)
Operating humidity range 25% to 85%
Case color Black (N1.5)

*1. Do not use the output from an inverter as the power supply. The ripple must be 20% maximum for CC power.
*2. The display is lit only when the power is ON. Nothing is displayed when power is OFF.


Insulation resistance 100 MΩ min. (at 500 VDC) between current-carrying terminal and exposed non-current-carrying metal parts, and between non-continuous contacts
Dielectric strength 2,000 VAC, 50/60 Hz for 1 min between current-carrying metal parts and non-current-carrying metal parts
2,000 VAC (for 100 to 240 VAC), 50/60 Hz for 1 min between power supply and input circuit (1,000 VAC for 24 VAC/12 to 24 VDC)
2,000 VAC 50/60 Hz for 1 min between control output, power supply, and input circuit
1,000 VAC, 50/60 Hz for 1 min between non-continuous contacts
Impulse withstand voltage 3.0 kV (between power terminals) for 100 to 240 VAC, 1.0 kV for 24 VAC/12 to 24 VDC
4.5 kV (between current-carrying terminal and exposed non-current-carrying metal parts) for 100 to 240 VAC, 1.5 kV for 24 VAC/12 to 24 VDC
Noise immunity ±1.5 kV (between power terminals)
±600 V (between input terminals)
Square-wave noise by noise simulator (pulse width: 100 ns/1 μs, 1-ns rise)
Static immunity Destruction: 15 kV, Malfunction: 8 kV
Destruction 10 to 55 Hz with 0.75-mm single amplitude, each in three directions for 2 hours
Malfunction 10 to 55 Hz with 0.35-mm single amplitude, each in three directions for 10 min
Destruction 300m/s2 each in three directions, three cycles
Malfunction 100m/s2 each in three directions, three cycles
Life expectancy Mechanical: 10,000,000 operations min.
Electrical: 100,000 operations min. (3 A at 250 VAC, resistive load, ambient temperature condition: 23°C) *
Weight Approx. 110 g (Tachometer only)

* See Life-test Curve (Reference Values).

Life-test Curve (Reference Values)

Resistive Load

H7CX-R Specifications 6

Inductive Load

H7CX-R Specifications 7

A current of 0.15 A max. can be switched at 125 VDC (cosφ=1) (Life expectancy: 100,000 operations)
A current of 0.1 A max. can be switched if L/R=7 ms.
(Life expectancy: 100,000 operations)

Applicable Standards

cULus (or cURus): UL508/CSA C22.2 No. 14 *1
Conforms to EN 61010-1 (IEC 61010-1): Pollution degree 2/overvoltage category II, B300 PILOT DUTY,
1/4 HP 120 VAC, 1/3 HP, 240 VAC, 3-A resistive load
EMC (EMI) EN61326-1 *2
Emission Enclosure: EN55011 Group 1 classA
Emission AC mains: EN55011 Group 1 classA
(EMS) EN61326-1 *2
Immunity ESD: EN61000-4-2: 4 kV contact discharge (level 2); 8 kV air discharge (level 3)
Immunity RF-interference: EN61000-4-3: 10 V/m (Amplitude-modulated, 80 MHz to 1 GHz) (level 3);
10 V/m (Pulse-modulated, 900 MHz ±5 MHz) (level 3)
Immunity Conducted Disturbance: EN61000-4-6: 10 V (0.15 to 80 MHz) (level 3)
Immunity Burst: EN61000-4-4: 2 kV power-line (level 3); 1 kV I/O signal-line (level 4)
Immunity Surge: EN61000-4-5: 1 kV line to lines (power and output lines) (level 2); 2 kV line to ground
(power and output lines) (level 3)
Immunity Voltage Dip/Interruption: EN61000-4-11: 0.5 cycle, 100% (rated voltage)

*1. The following safety standards apply to the H7CX-R11[].
     cUL (Listing): Applicable when an OMRON P2CF(-E) Socket is used.
     cUR (Recognition): Applicable when any other socket is used.
*2. Industrial electromagnetic environment (EN/IEC 61326-1 Table 2)

I/O Functions

Inputs Count, count 1, count 2 Reads counting signals.
Hold Holds the measurement value and outputs.
The hold indicator is lit during hold. *
Outputs OUT Outputs signals according to the specified output mode when a comparison
value is reached.

* Refer to Data Sheet for details on the hold function.

The following table shows the delay from when the reset signal is input until the output is turned OFF. (Reference values)

Minimum reset signal width Output delay time
1 ms 0.8 to 1.2 ms
20 ms 15 to 25 ms