10 Attachment
Factory-Recommended Branch Circuit Protection for UL Listing
Use branch circuit protection to protect against short circuits and to maintain compliance
with UL61800-5-1. Yaskawa recommends connecting semiconductor protection fuses on
the input side for branch circuit protection. Refer to
367,
Three-Phase 200 V Class on page
more information.
WARNING
immediately energize the drive or operate peripheral devices. Wait for the time specified on the warning
label at a minimum and make sure that all indicators are OFF. Then check the wiring and peripheral device
ratings to find the cause of the problem. If you do not know the cause of the problem, contact Yaskawa
before you energize the drive or peripheral devices. If you do not fix the problem before you operate the
drive or peripheral devices, it can cause serious injury or death.
• 200 V Class
Use the fuses specified in this document to prepare the drive for use on a circuit that
supplies not more than 31,000 RMS and not more than 240 Vac when there is a short
circuit in the power supply.
• 400 V Class
Use the fuses specified in this document to prepare the drive for use on a circuit that
supplies not more than 31,000 RMS and not more than 480 Vac when there is a short
circuit in the power supply.
The built-in short circuit protection of the drive does not provide branch circuit protection.
The user must provide branch circuit protection as specified by the National Electric Code
(NEC), the Canadian Electric Code, Part I (CEC), and local codes.
Low Voltage Wiring for Control Circuit Terminals
You must provide low voltage wiring as specified by the National Electric Code (NEC),
the Canadian Electric Code, Part I (CEC), and local codes. Yaskawa recommends the
NEC class 1 circuit conductor. Use the UL approved class 2 power supply for external
power supply.
Table 10.2 Control Circuit Terminal Power Supplies
Input/Output
Digital input
Analog input
Analog output
354
Electrical Shock Hazard. After the drive blows a fuse or trips an RCM/RCD, do not
S1 to S7, SN, SC, SP
A1, A2, AC ,+V
YASKAWA TOMPC7106173UA GA500 Installation and Operation Instruction
Single-Phase 200 V Class on page
367, and
Three-Phase 400 V Class on page
Terminals
AM, AC
Power Supply Specifications
Uses the LVLC power supply in the
drive.
Use the UL Listed class 2 power
supply for external power supply.
Uses the LVLC power supply in the
drive.
Use the UL Listed class 2 power
supply for external power supply.
Uses the LVLC power supply in the
drive.
368for