The Omron H7ER-NV1-B Counter delivers precise rotational speed monitoring with selectable 1 kHz and 10 kHz tachometer processing for machines with varying encoder resolutions. Its sharp 5-digit LCD provides clear visibility, while voltage input capability (4.5–30 VDC) ensures broad sensor compatibility. Built for industrial durability, it withstands noise, static discharge, vibration, and shock. The IP66-rated front panel allows installation in demanding areas without performance degradation. Manufactured by Omron and offered within Omron Counter solutions, this tachometer belongs to the Omron H7ER Series.
Voltage input: Hight level: 4.5 to 30 VDC
Low level: 0 to 2 VDC (Input resistance Approx. 4.7 kΩ)
Display method
LCD
Display Digits
5 digit
External connections
Screw terminal
Input mode
Voltage input
Tachometer Max. counting speed
0.5 ms(1 kHz)
0.05 ms(10 kHz)
Tachometer Max Display speed
1000.0 s-1(rps) (When encoder resolution of 10 pulse/rev is used.)
1000 min-1(rpm) (When encoder resolution of 600 pulse/rev is used.)
10000 min-1(rpm) (When encoder resolution of 60 pulse/rev is used.)
Display Character height
8.6 mm (Black)
Display Zero suppression
Equipped
Ambient temperature (Storage)
-10 to 55 ℃ (with no freezing or condensation)
Ambient humidity (Operating)
25 to 85 %
Dielectric withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 1000 VAC 50/60 Hz 1 min
Impulse withstand voltage
Between current carrying terminals and exposed non-current carrying metal parts: 4.5 kV
Noise immunity
Between count input terminals: ±500 V
square-wave noise by noise simulator (pulse width: 100 ns/1 µs, 1-ns rise)
Static immunity
±8 kV (malfunction)
Vibration resistance
Between current carrying terminals and exposed non-current carrying metal parts: 100 MΩ min. (at 500 VDC)
Shock resistance
Destruction: 300 m/s2, 3 times each in 6 directions
Malfunction: 200 m/s2, 3 times each in 6 directions
Degree of protection
Case front: IP66, NEMA 4 (indoors), and UL Type 4X (indoors)
