H7BR
H7BR
21
Teaching for the Set Value 1
1. Press the MODE key to teach for set value 2 (on double
preset model only).
2. Input the count signal from external sensor.
3. Press the TEACH key to register the present count value as
the set value.
• The set value is displayed by teaching while pressing the
TEACH key.
Teaching for the Set Value 2 (double preset model only)
• Set the same operation as before. (Press the DISPLAY
key to return from teaching mode to run mode.)
Difference
H7AN
H7BR
First and second outputs of
H7AN-WE executes the first output followed by
First and second outputs are executed
double preset model
the second output.
in no particular order by H7BR.
The order of first and second outputs executed
by H7AN-W depends on the first and second
output set values; whichever is closer to the
primary counting value takes precedence, and
the corresponding output is executed first.
Reset operation at SET = 0
Outputs when reset input is OFF.
No output is made when reset input is
OFF.
Reversible D, E, and F input modes
Yes
No. (Possible to compensate the
count value with compensation input.)
Permissible limits of count speed
Up to 505 over setting, e.g., 50 cps for
Limited to 10% max. over setting
30 cps counting speed
One-shot output time
Approximately 0.1 to 1 s
10 to 1,000 ms
Contact form of single preset models
SPDT
SPST-NO
Precautions
■
REPLACING AN H7AN WITH AN H7BR
■
EXTERNAL POWER SUPPLY
The capacity of the power supply from the counter is 160 mA at
12 V or 80 mA at 24 V. For models with 24 VAC/12 to 24 VDC
specifications, loads must be established between the following
limits.
■
POWER SUPPLIES
A switching regulator is used in the counter's internal circuits,
causing rush current to flow when power is turned on. If the
capacity of the power supply to the counter is insufficient, the
counter may not start operation. Be sure the power source
meets the current consumption requirements of the counter.
Connect the power supply voltage through a relay or switch in
such a way that the voltage reaches a fixed value immediately.
ON
OFF
Unstable
Impossible
Possible
Impossible
10 ms
0 to 50 ms
0 to 1.2 s
Input
Power
supply
An unstable region is generated whenever the power supply is
turned on or off. Although these regions vary depending on the
power supply voltage and load conditions, they will fall within
the limits shown below.