Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 158)

Revision May 2009, 00DE, V0.50 6-1
Chapter 6 Fault Code Information and Maintenance
6.1 Fault Code Information
The brushless DC motor drive has a comprehensive fault diagnostic system that includes several
different alarms and fault messages. Once a fault is detected, the corresponding protective functions
will be activated. The following faults are displayed as shown on the brushless DC motor drive digital
keypad display. The five most recent faults can be read from the digital keypad or communication.
The brushless DC motor drive is made up of multiple components, including electric components (IC,
resistor, capacitor and resistor), cooling fan and relay. These components have the life time and may
cause malfunction when exceeding the life time. Therefore, it is necessary to have periodic
inspection to find out antiquated components in time to keep the brushless DC motor drive in its
optimal condition.
Please always perform a visual inspection and a check-up regularly for the brushless DC motor drive
according to the following items to make sure that the brushless DC motor drive runs normally.
DANGER!
1. Wait 5 seconds after a fault has been cleared before performing reset via keypad of input
terminal.
2. Before the check-up, always turn off the power and remove the cover. Wait at least 10 minutes
for ≧ 30kW models (5 minutes for 22kW
≦ ) after all display lamps have gone out, and then
confirm that the capacitors have fully discharged by measuring the voltage between ~ . It
should be less than 25VDC.
3. Only qualified personnel can install, wire and maintain brushless DC motor drives. Please take
off any metal objects, such as watches and rings, before operation. And only insulated tools are
allowed.
4. Never reassemble internal components or wiring.
5. The operation characteristics and surrounding environment should comply with the
specifications, such as no abnormal noise, vibration and smell.
6. Make sure that the keypad display is normal without overheat or color change.
7. Prevent static electricity.