Table of Contents
Advertisement
Handling
2.5.1 Installation Site
2.5 Motor Installation Precautions
IMPORTANT
2.5.1 Installation Site
2
2.5.2 Installation Orientation
This section provides precautions for mechanical designing around the Motor to be installed.
The motor flange and shaft are coated with anti-corrosive paint or grease. Clean the flange, shaft, and key
groove with paint thinner before installing the motor.
Install the Motor under the following conditions.
Provide sufficient space so that cooling air will be provided to the cooling fan. Keep a space of at least
D
100 mm (3.94 inches) between the machine and the ventilation outlet of the Motor. If ventilation is
not proper, the motor temperature fault protective function will work regardless of whether or not the
load is at the rated value or not.
Install the motor in a clean location free from oil mist and water drops. If the motor is likely to come
D
in contact with water or oil, protect the motor with a cover. The intrusion of water or dirty oil into the
interior of the motor will decrease the insulation resistance, which may result in a ground fault.
Check that the mounting bed, base, or stand of the Motor is of robust construction because the weight
D
of the motor as well as the dynamic load of the motor in operation will be imposed on it, possibly caus-
ing vibration. Use the Motor with a maximum vibration acceleration of 2.5 G if it is a Standard Motor
with a maximum capacity of 22/18.5 kW or a Winding Selection Motor with a maximum capacity of
11/7.5 kW or 18.5/15 or 22/18.5 kW and the external diameter is 260 mm (10.2 inches) or less. Use
the Motor with a maximum vibration acceleration of 2 G if it is a Standard Motor with a maximum
capacity of 37/30 kW or a Winding Selection Motor with a maximum capacity of 15/11 kW and the
external diameter is 260 mm (10.2 inches) or less.
Frequency of vibration acceleration is 10 to 60 Hz (constant amplitude) or 60 to 2,500 Hz (constant
acceleration).
Install the motor in a location free from excessive dust, metal powder, or mist. The motor has a built-in
D
fan that provides cooling air to the core. If the passage of cooling air is blocked with dust or other for-
eign matter, the cooling efficiency will drop. As a result, the motor temperature fault protective func-
tion will work regardless of whether or not the load is the rated value or not.
Use a motor with oil seal in the case, such as gear coupling, where the motor shaft is likely to come
into contact with oil. For gear coupling, check that the surface of lubricating oil is under the oil seal
lip.
Consider the following conditions for the installation direction of the Motor.
The Flange-type Motor can be mounted with the motor shaft on the load side at any angle between
D
horizontal and the downward vertical direction. If the motor shaft is facing up, excessive force will
be imposed on the motor shaft. As a result, the service life of the Motor will be adversely affected.
If the Motor is mounted on legs, mount the legs on the floor. If the legs are installed upward, excessive
D
force will be imposed on the legs. As a result, the service life of the Motor will be adversely affected.
Use the Motor of outer diameter j380 with the terminal box facing upward and the motor shaft facing
D
horizontal if it is a Standard Motor with a minimum capacity of 45/37 kW or a Winding Selection
Motor with a minimum capacity of 18.5/15 kW. If the terminal box is in the horizontal or downward
direction, dust may intrude from the ventilation mouth on the bottom of the load-side bracket. As a
result, the Motor may fail to operate or unexpected accidents may occur.
2 -10
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
