Datasheet

26 Multifunction Counter H7BX
• Inrush current generated by turning ON or OFF the power
supply may deteriorate contacts in the power supply circuit.
Turn ON or OFF using a device with a rated current of 10 A or
higher.
• Input signals may be accepted, not accepted, or unstable for
the following time when the power supply is turned ON or
OFF. Set the system to allow leeway in the timing of input
signals.
• This H7BX always compares the count value with the set
value. Thus, if you change the set value during operation,
please remember that the output will turn ON when the set
value becomes equal to the count value.
• With the factory setting, the output will turn ON when power is
supplied to the H7BX because the set value and count value
are both zero. While resetting, however, the output stays OFF.
• EEPROM is used as memory when the power is interrupted.
The write life of the EEPROM is 100,000 writes. The EEPROM
is written when settings are changed, or the power is tuned
OFF.
• Water resistance will be lost if the front sheet is peeled off or
torn. Do not use the H7BX if the front sheet is missing or torn.
• Abide by all local ordinances and regulations when disposing
of the H7BX.
• External Power Supply
Reduce the load current as shown in the diagram on the right
according to the power supply voltage if a DC power supply is
used for models specified for 24 VAC/12 to 24 VDC.
Precautions for Correct Use
Input Impossible
200 ms 5 ms0 to 90 ms 0 to 1 s
Possible
Un-
stable
Unstable
Power supply
ON
OFF
Impossible
Power supply voltage (VDC)
10.8
15
100
20
0
Load current (mA)