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)