C-18

Self-powered Time Counter

H7ET

Specifications

I General

Note: 1. Only PNP/NPN universal DC voltage input models (-H models) have a backlight.

2. “-hours”, “-d-h”, “-h-m”, and “-h-m-s” labels are included.

I Ratings

Item

H7ET-NV-

@

H7ET-NV-

@H

H7ET-NFV-

@

H7ET-N-

@

H7ET-NV1-

@

H7ET-NV1-

@H

H7ET-NFV1-

@

H7ET-N1-

@

Operating mode

Accumulating

Mounting method

Flush mounting

External connections

Screw terminals

Reset

External/Manual reset

Display

7-segment LCD with or without backlight, zero suppression (character height: 8.6 mm) (see note 1)

Number of digits

7

Time range

0.0h to 999999.9h

←→ 0.0h to 3999d23.9h

(switchable with switch)

0s to 999h59min59s

←→ 0.0min to 9999h59.9min

(switchable with switch)

Timer input

PNP/NPN univer-

sal DC voltage in-

put

AC/DC multi-volt-

age input

No-voltage input

PNP/NPN univer-

sal DC voltage in-

put

AC/DC multi-volt-

age input

No-voltage input

Case color

Light gray or black (-B models)

Attachment

Waterproof packing, flush mounting bracket, time unit labels (see note 2)

Approved standard

UL863, CSA C22.2 No.14, Lloyds

Conforms to EN61010-1/IEC61010-1 (pollution degree2/overvoltage category III)

Conforms to VDE0106/P100

Item

H7ET-NV

@-@

H7ET-NV

@-@H

H7ET-NFV

@-@

H7ET-N

@-@

Supply voltage

Backlight model: 24 VDC (0.3 W max.)

(for backlight)

No-backlight model: Not required (pow-

ered by built-in battery)

Not required (powered by built-in battery)

Timer input

High (logic) level: 4.5 to 30 VDC

Low (logic) level: 0 to 2 VDC

(Input impedance: Approx. 4.7 k

Ω)

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 k

Ω max.

Short-circuit residual voltage: 0.5 V max.

Minimum open impedance: 750 k

Ω min.

Reset input

No voltage input

Maximum short-circuit impedance:

10 k

Ω max.

Short-circuit residual voltage: 0.5 V max.

Minimum open impedance: 750 k

Ω min.

Minimum pulse

width

1 s

Reset system

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

Terminal screw

tightening torque

0.98 N·m max.

Ambient tempera-

ture

Operating: -10

°C to 55°C (with no condensation or icing)

Storage:

-25

°C to 65°C (with no condensation or icing)

Ambient humidity

Operating: 25% to 85%