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3.1.2 Protection specifications and operating supply
(1) Protection specifications
A protection method complying with the IEC Standard IP20 (Opened type) is adopted for CR800
controller.
The IEC IP symbols refer only to the degree of protection between the solid and the fluids, and don't
indicated that any special protection has been constructed for the prevention against oil and water.
[Information]
• The IEC IP20
It indicates the protective structure that prevents an iron ball 12
with the power of 3.1 kg±10%, from going through the opening in the outer sheath of the supplied
equipment.
(2) Operating supply
The controller is supposed to be installed and used in the customer's system. Supply the primary power of
the controller from the system. In addition, provide a safety device (ex. earth-leakage current breaker) that
can shut off the power of the controller in the customer's system. When using an earth-leakage circuit
breaker as a safety device, select a product with the highest sensitivity possible referring to the specifica-
tions in the table below.
Item
Rated voltage
Rated sensitivity current
Rated current
Refer to the section
Page 103, "6.2 Working environment"
+0.05
0
Unit
V
mA
A
for details on the working environment.
mm diameter, which is being pressed
Specification
AC100 to 120, AC200 to 230
30 or more
10 or more
Standard specifications 3-45
3 Controller
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