Nema Type 1 Kit - YASKAWA J1000 Technical Manual

8.4 Installing Peripheral Devices
value, motor overheating may occur. A thermal relay cannot effectively protect the motor due to the reduction of cooling at
low speeds. For this reason, apply the UL recognized electronic thermal overload protection function built into the drive
whenever possible.
UL recognized electronic thermal overload function of the drive: Speed-dependent heat characteristics are simulated using
data from standard motors and force-ventilated motors. The motor is protected from overload using this function.
Using One Drive with Multiple Motors
Turn off the electronic thermal overload function. Please refer to the appropriate product instruction manual to determine
which parameter disables this function.
The UL recognized electronic thermal overload function of the drive cannot be applied when using multiple motors on one
drive.
Long Motor Cables
When long motor cables and high carrier frequency are used, nuisance tripping of the thermal relay may occur due to increased
leakage current. Therefore, reduce the carrier frequency or increase the tripping level of the thermal overload relay.
Nuisance Tripping Resulting from High AC Drive Carrier Frequency
Current waveforms generated by high carrier frequency PWM drives tend to create additional temperature rise in overload
relays. Therefore, it may be necessary to increase the trip level setting when encountering nuisance triggering of the relay.
WARNING! Fire Hazard. Confirm an actual motor overload condition is not present prior to increasing the thermal oL trip setting. Check
local electrical codes before making adjustments to motor thermal overload settings.
u

NEMA Type 1 Kit

WARNING! Fire Hazard. Provide sufficient cooling when installing the drive inside an enclosed panel or cabinet. Failure to comply could
result in overheating and fire. When multiple drives are placed inside the same enclosure panel, install proper cooling to ensure air entering
the enclosure does not exceed 40 °C.
The optional NEMA Type 1 kit can be installed to raise the enclosure protection level of an IP20/Open-Chassis drive to NEMA
Type 1. Drives with a NEMA Type 1 kit cannot be installed using side-by-side mounting unless the top cover is removed. The
drive does not retain NEMA Type 1 integrity with the top cover removed.
page 27 for installation instructions.
n Installation Environment
Environment
Ambient Temperature
Refer to Installation Environment on page 26
172
Table 8.2 Installation Environment
-10 °C to +40 °C (NEMA Type 1/wall-mounted enclosure)
Drive reliability improves in environments without wide temperature fluctuations.
When using an enclosure panel, install a cooling fan or air conditioner in the area to ensure that the air temperature inside
the enclosure does not exceed the specified levels.
Do not allow ice to develop on the drive.
for all other installation environment specifications.
http://nicontrols.com
Refer to Installation Orientation and Spacing on
Conditions
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual