H7EC

H7EC

5

s DC VOLTAGE INPUT TYPE

s NO-VOLTAGE INPUT TYPE

1. Contact input (input by a relay or switch contact)

2. Solid-state input (open collector input of an NPN transistor)

1. Contact input (input by a relay or switch contact)

2. Solid-state input (open collector input of an NPN transistor)

Operations

s SELECTING THE H7EC TOTALIZING COUNTER

Determine the maximum counting speed of the counter by

evaluating the input conditions listed in the table at right.

Counting speed

20 or 30 cps

1 kcps

Contact

Relay or switch

Do not input contact

signal input

contact input with

signal inputs.

some chattering

Chattering is counted

as signal input.

Solid-state

Low-speed

High-speed transistor

signal input

transistor inputs

inputs

s MANUALLY RESETTING COUNTERS

(-M SUFFIX MODELS)

Counters with "-M" suffixes offer the option of manual or external

resetting. To manually reset the counter, press the reset button

located to the left of the display window. To prevent an accidental

reset, lock the reset button by sliding the button downward, without

depressing it. A small "click" sound may be heard, both when

locking and unlocking the reset button. Slide the button up to

unlock.

Terminals (2) and (4)

are internally connected.

Terminals (2) and (4)

are internally connected.

Terminals (2) and (4)

are internally connected.

Terminals (2) and (4)

are internally connected.

Input

Reset