YASKAWA S-7 Series Manual page 52

6 Conditions for Compliance with UL/cUL Standards
6 Conditions for Compliance with UL/cUL Standards
The products have been tested according to the following standards and they
comply the UL/cUL standards. To comply with the UL/cUL standards, the
equipment or machine in which you use the products must meet the following
conditions.
• UL: UL 61800-5-1 (Adjustable Speed Electrical Power Drive Systems)
• cUL: CSA C22.2 No.274 (Adjustable speed drives)
Installation Environment and Insulation 
Conditions
Overvoltage Cat-
egory
Pollution Degree
Surrounding Air
Temperature
Altitude
Degree of 
Protection
Protective Class
Input Power Sup-
ply
* If you combine a -7-Series SERVOPACK with a -V-Series Option Module,
the following -V-Series SERVOPACKs specifications must be used: a sur-
rounding air temperature of 0°C to 55°C and an altitude of 1,000 m max. Also,
the applicable range cannot be increased by derating.
External Power Supply for Control Circuits
The DC power supplies connected to the control signal I/O circuits (CN1 and
CN8) must meet one of the following conditions.
• Use a class 2 power supply (compliance standard: UL 1310).
• Connect the control signal I/O circuits (CN1 and CN8) to a circuit with a
maximum voltage of 30 Vrms and a peak voltage of 42.4 V that uses a UL
5085-3 (previous standard: UL 1585)-compliant class 2 transformer as its
power supply.
E-50
Compliance standards: IEC 60364-4-44 and IEC
III
60664-1
Compliance standards: IEC 60364-4-44 and IEC
2
60664-1
Refer to the following section for application at
-5C to
55°C or higher.
60C*
Refer to the following section for application at
2,000 m
1,000 m or higher.
max.*
Refer to 2
Installation Compliance standard: IEC 60529
on page 17.
I Compliance standard: IEC 61140
AC power UL/cUL standards are not applicable if a DC
supply power supply input is used.

Derating Specifications on page 19

Derating Specifications on page 19