Datasheet

44 Tachometer H7CX-R
Specifications
■ Ratings
Note: 1. Permissible ripple: 20% (p-p) max.
2. The display is lit only when the power is ON.
Classification Tachometer
Rated supply voltage (See note 1.) 100 to 240 VAC (50/60 Hz)
24 VAC (50/60 Hz)/12 to 24 VDC
Operating voltage range 85% to 110% of rated supply voltage (90% to 110% at 12 VDC)
Power consumption Approx. 9.4 VA at 264 VAC
Approx. 7.1 VA at 26.4 VAC
Approx. 4.7 W at 12 VDC
Mounting method Flush mounting, surface mounting, or DIN track mounting
External connections 11-pin socket
Display (See note 2.) 7-segment, negative transmissive LCD;
Present value: 9-mm-high characters, red
Comparison value: 6-mm-high characters, green
Digits 6 digits(0 to 999999)
Input signals Count, hold
Input method No-voltage input/voltage input (switchable)
No-voltage input
ON impedance: 1 kΩ max. (Leakage current: 5 to 20 mA at 0 Ω)
ON residual voltage: 3 V max.
OFF impedance: 100 k
Ω min.
Voltage input
High (logic) level: 4.5 to 30 VDC
Low (logic) level: 0 to 2 VDC (Input resistance: approx. 4.7 k
Ω)
Hold input Minimum input signal width: 20 ms
Pulse measurement method Periodic measurement (Sampling period: 200 ms)
Max. counting speed 30 Hz or 10 kHz (selectable)
Measuring range 30 Hz: 0.001 Hz to 30.00 Hz
10 kHz: 0.001 Hz to 10 kHz
Measuring accuracy
±0.1% FS ±1 digit max. (at 23 ±5°C)
Output modes HI-LO, AREA, HI, LO
Auto-zero time 0.1 to 999.9 s
Startup time 0.0 to 99.9 s
Average processing OFF/2/4/8 times
Control output Contact output: 3 A at 250 VAC/30 VDC, resistive load (cos
φ=1)
Minimum applied load:10 mA at 5 VDC (failure level: P, reference value)
NEMA B300 Pilot Duty, 1/4 HP 3-A resistive load at 120 VAC, 1/3 HP 3-A resistive load at 240 VAC
Output type SPDT
External power supply 12 VDC (
±10%), 100 mA Refer to Safety Precautions (page 60) for details.
Key protection Ye s
Prescaling function 0.001 to 99.999
Decimal point adjustment Rightmost 3 digits
Sensor waiting time 250 ms max. (Control output is turned OFF and no input is accepted during sensor waiting time.)
Memory backup EEPROM (overwrites: 100,000 times min.) that can store data for 10 years min.
Ambient temperature Operating:
−10 to 55°C (−10 to 50°C if tachometers are mounted side by side) (with no icing or conden-
sation)
Storage:
−25 to 65°C (with no icing or condensation)
Ambient humidity 25% to 85%
Case color Black (N1.5)