No-voltage

30 Hz <-> 1 kHz (switchable)

7-segment LCD

H7EC-N

H7EC-N-B

PNP/NPN universal DC
voltage input

30 Hz <-> 1 kHz (switchable)

7-segment LCD

H7EC-NV

H7EC-NV-B

7-segment LCD with backlight

H7EC-NV-H

H7EC-NV-BH

AC/DC multi-voltage input

20 Hz

7-segment LCD

H7EC-NFV

H7EC-NFV-B

Operating mode

Up type

Mounting method

Flush mounting

External connections

Screw terminals, optional wire-wrap terminals

Number of digits

8

Display

7-segment LCD with or without backlight, zero suppression (character height: 8.6 mm)

Max. counting speed

30 Hz/1 kHz

20 Hz

30 Hz/1 kHz

Case color

Light grey or black (-B models)

Attachment

Waterproof packing, flush mounting bracket

Supply voltage

Backlight model: 24 VDC (0.3 W max.)
(only for backlight)

No-backlight model: Not required
(powered by built-in battery)

Not required (powered by built-in battery)

Count input

High (logic) level: 4.5 to 30 VDC

Low (logic) level: 0 to 2 VDC
(input impedance: Approx. 4.7 kΩ)

High (logic) level:
24 to 240 VAC/VDC, 50/60 Hz

Low (logic) level:
0 to 2.4 VAC/VDC, 50/60 Hz

No voltage input

Maximum short-circuit impedance:
10 kΩ max.

Short-circuit residual voltage: 0.5 V max.

Minimum open impedance: 750 kΩ min.

Reset input

No voltage input

Maximum short-circuit impedance:
10 kΩ max.

Short-circuit residual voltage: 0.5 V max.

Minimum open impedance: 750 kΩ min.

Minimum signal width

20 Hz: 25 ms, 30 Hz: 16.7 ms, 1 KHz: 0.5 ms

Reset system

External reset and manual reset: Minimum signal width of 20 ms

Ambient temperature

Operating: -10 to 55°C (with no condensation or icing), storage: -25 to 65°C (with no condensation or icing)

Degree of protection

Front-panel: IP66, NEMA4, terminal block: IP20

Battery life (reference)

7 years min. with continuous input at 25°C (lithium battery)

Size in mm (H×W×D)

24×48×55.5