K3NR Datasheet, PDF (16/28 Pages) List of Unclassifed Manufacturers – High-speed, Intelligent Interface Modules

Precautions
!WARNING
Do not touch any of the terminals while the power is being sup-
plied. Doing so may result in electric shock.
!Caution
Do not allow metal objects or conductive wire cuttings to enter the
product. Doing so may result in electric shock, fire, or malfunction.
!Caution
Do not attempt to take the product apart or touch any internal parts
while the power is being supplied. Doing so may result in electric
shock.
!Caution
Do not use the product in locations subject to flammable or explo-
sive gases. Doing so may result in explosion.
!Caution
The lifetime of output relays varies greatly with the switching ca-
pacity and conditions. Consider the actual operating conditions,
and use the relays within the rated load without exceeding the
number of operations specified as the rated electrical life. Using
relays beyond their rated electrical life may result in contact depos-
it or burning.
!Caution
Do not use loads exceeding the rated value. Doing so may result
in damage or burning.
!Caution
Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
!Caution
Use settings that are appropriate for the control system. Discrep-
ancies between the settings and the actual control conditions may
result in unexpected operation leading to damage or accidents.
!Caution
Be sure to tighten terminal screws to the specified torque.
Specified torque for M3.5 screws: 0.74 to 0.90 N·m
Loose screws may result in burning or malfunction.
I Application Precautions
• Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
• Be sure to perform wiring correctly, verifying the terminal names.
Incorrect wiring may result in burning.
• Be sure to tighten the screws on the terminal block properly.
• Do not connect anything to unused terminals.
I Correct Use
Long-term Use
Use all products within the specified ranges. When using inside a
control panel, ensure that the temperature around the product, rather
than the temperature around the control panel, does not exceed the
specified temperature range. Electronic products, such as this prod-
uct, have a lifetime that is dependent on the lifetime of internal elec-
tronic components, as opposed to the lifetime related to the number
of relay switching operations. The lifetime of these components var-
ies with the temperature; the higher the temperature, the shorter the
lifetime. Therefore, the product lifetime can be extended by lowering
the internal temperature of the product.
When several Frequency/Rate Meters are mounted close together
(either horizontally or vertically), the internal temperature of the Fre-
quency/Rate Meters may rise, leading to a reduction in the lifetime. In
this case, take measures to cool the Frequency/Rate Meters, such as
installing fans. Ensure, however, that the terminals are not cooled as
this may lead to incorrect measurement.
Operating Environment
Do not use the product in locations subject to temperatures or humid-
ity levels above the specified ranges, or in locations subject to con-
densation.
Do not use the product in locations subject to severe shocks or vibra-
tions.
Separate the product from machines that generate high-frequency
noise, such as high-frequency welding machines and high-frequency
sewing machines.
Do not use the product in locations subject to dust or corrosive
gases.
Do not use the product outdoors or in locations subject to direct sun-
light.
Operation
When using models with comparative outputs, if an error occurs at
the Frequency/Rate Meter, comparative output may not operate cor-
rectly. We therefore recommend that you consider providing an alarm
system separately as a countermeasure.
Parameter settings that allow the functions to operate properly are
made, using the setting menu, at the factory prior to delivery. When
using the product, change the settings as required for the applica-
tion.
Mounting
Recommended panel thickness is 1 to 3.2 mm.
Panel
K-144 Frequency/Rate Meter K3NR