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Low Voltage Wiring for Control Circuit Terminals
Wire low voltage wires with NEC Class 1 circuit conductors. Refer to national state or local
codes for wiring. Use a class 2 (UL listed) power supply for the control circuit terminal.
Table C.8 Control Circuit Terminal Power Supply
Input / Output Terminal Signal Power Supply Specifications
Multi-function digital inputs S1, S2, S3, S4, S5, SC
Use the internal power supply of the drive.
Use class 2 for external power supply.
Main frequency reference +V, A1, AC
Use the internal power supply of the drive.
Use class 2 for external power supply.
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Drive Short-Circuit Rating
This drive has undergone the UL short-circuit test, which certifies that during a short circuit
in the
power supply the current flow will not rise above 31,000 amps maximum at 240 V for
200 V class drives and 480 V for 400 V class drives.
• The MCCB and breaker protection and fuse ratings shall be equal to or greater than the
short-circuit tolerance of the power supply being used.
• Suitable for use on a circuit capable of delivering not more than 31,000 RMS symmetrical
amperes for 240 V in 200 V class drives (up to 480 V for 400 V class drives) motor overload
protection.
u
Drive Motor Overload Protection
Set parameter E2-01 (motor rated current) to the appropriate value to enable motor overload
protection. The internal motor overload protection is UL listed and in accordance with the
NEC and CEC.
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E2-01: Motor Rated Current
Setting Range: Model Dependent
Default Setting: Model Dependent
Parameter E2-01 (motor rated current) protects the motor if parameter L1-01 is not set to 0
(default is 1, standard induction motor protection enabled).
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L1-01: Motor Overload Protection Selection
The drive
has an electronic overload protection function (oL1) based on time, output current
and output frequency, which protects the motor from overheating. The electronic thermal
overload function is UL-recognized, so it does not require an external thermal overload relay
for single motor operation.
This parameter selects the motor overload curve used according to the type of motor applied.
C.3 UL Standards
252
YASKAWA ELECTRIC TOEP C710606 26B YASKAWA AC Drive – J1000 Quick Start Guide
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