D.3 UL Standards n 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 regulations) power supply for the control circuit terminal. Table D.7 Control Circuit Terminal Power Supply n 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 30,000 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 30,000 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. n 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). n 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.
Table D.8 Overload Protection Settings Disable the electronic overload protection (L1-01 = 0: Disabled) and wire each motor with its own motor thermal overload when connecting the drive to more than one motor for simultaneous operation. Enable the motor overload protection (L1-01 = “1” or “2”) when connecting the drive to a single motor unless there is another means of preventing motor thermal overload. The electronic thermal overload function causes an oL1 fault, which shuts off the output of the drive and prevents additional overheating of the motor. The motor temperature is continually calculated as long as the drive is powered up.
Setting L1-01 = 1 selects a motor with limited cooling capability below rated (base) speed when running at 100% load. The oL1 function derates the motor when it is running below base speed. Setting L1-01 = 2 selects a motor capable of cooling itself over a 10:1 speed range when running at 100% load. The oL1 function derates the motor when it is running at 1/10 or less of its rated speed. Standards Compliance Setting Range: 0.1 to 5.0 Minutes Factory Default:
1.0 Minutes n L1-02 Motor Overload Protection Time SIEP C710606 33A OYMC AC Drive – J1000 User Manual 219 D Drive Model JZA Class T Fuses Class L Fuses Model Fuse Ampere Rating Model Fuse Ampere Rating 44P0 A6T30 30 CR6L-50/UL 50 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. Setting Description 0 Disabled 1 Std Fan Cooled ( 2 Standard Blower Cooled (10:1 motor)