Emheater EM12 Series, User Manual

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EM12 User’s Manual 2. Product Information
11
Model
Appearance and installing dimension
（
mm
）
W W1 H H1 D D1
Φd
EM12-G3-355/P3-400
EM12-G3-400/P3-450
EM12-G3-450/P3-500
2.5.3 Appearance and installation dimension of external keypad (keypad tray)
Diagram 2-7 Appearance and installation dimension of external keypad (keypad tray)
2.6 Options
Please indicate if the following options are needed when placing order.
Table 2-4 Options of EM12 frequency inverter
Item Functions
External braking unit
External braking unit for above 30kw(including 30kw)
Energy-regeneration unit
Energy saving product makes the electric energy offre frequency inverter
feedback to the AC power grid.
Rectifying unit
To use the unit when manyfrequency inverters use the one DC bus, the
waycan save energy.
2.7 Daily maintenance of frequency inverters
2.7.1 Daily maintenance
Due to the influence of temperature, humidity, dust and vibration, it will lead to poor heat dissipation and
component aging of frequency inverter, and results in potential failure or reducing the service life of frequency
inverter. Therefore, it is necessary to do daily and regular maintenance of the frequency inverter.
Daily check items:
1. Check if the sound is normal during the running of the motor;
2. Check if there is a vibration during the running of the motor;
3. Check whether the installation environment of frequency inverter has changed;
4. Check if the cooling fan of frequency inverter is working correctly, the cooling air duct is clear;
5. Check if the frequency inverter is overheating;
6. Make sure that the frequency inverter should always be kept in a clean state;
7. Clear up effectively the dust on the surface of the frequency inverter, prevent the dust from entering into the