H7EC

H7EC

2

Supply voltage

Not required (powered by built-in battery)

AC/DC voltage input:

24 to 240 VAC

± 10%, 50/60 Hz, or

6 to 240 VDC

± 10% at "High" (logic) level

0 to 1.5 VAC

± 10%, 50/60 Hz, or

0 to 2 VDC

± 10% at "Low" (logic) level

Input

DC voltage input: 4.5 to 30 VDC at "High" (logic) level

0 to 2 VDC at "Low" (logic) level

No-voltage input:

Maximum short-circuit impedance: 10 k

Ω max.

Short-circuit residual voltage: 0.5 V max.

Minimum open impedance: 500 k

Ω min.

Maximum counting

1 kcps: Minimum signal width 0.5 ms

speed*

30 cps: Minimum signal width 16.7 ms

20 cps: Minimum signal width 25 ms

Reset time

External and manual reset types (6-digit models): 20 ms reset signal

External reset types (7-digit models): 20 ms reset signal

* ON/OFF ratio 1:1

s RATINGS

Specifications

Timing Chart

Insulation resistance

100 M

Ω min. at 500 VDC

Dielectric strength

1,000 VAC 50/60 Hz for 1 minute between current-carrying terminals and exposed

non-current-carrying metal parts

Vibration

Mechanical durability: 10 to 55 Hz; 0.75 mm (0.03 in) double amplitude

Malfunction durability: 10 to 55 Hz; 0.3 mm (0.02 in) double amplitude

Shock

Mechanical durability: Approx. 30 G

Malfunction durability: Approx. 10 G

Ambient temperature

Operating: -10

° to 55°C (14° to 131°F)

Storage: -25

° to 65°C (-13° to 149°F)

Humidity

Operating: 35 to 85% RH

Battery life

30 cps type: 7 years min. of continuous input

1 kcps and 20 cps types: 6 years min. of continuous input

Weight

AC/DC voltage input type: Approx. 90 g (3.18 oz)

DC voltage and No-voltage input types: Approx. 60 g (2.12 oz)

(including mounting bracket)

s CHARACTERISTICS

Approved by the following standards

UL

CSA

CE (EMC)