Information For Contacting Technical Support - WEG WECM / Emerald eZA 14634998 Manual De Instalación, Operación Y Mantenimiento

7 - PRODUCT PROTECTIONS AND FAULT DIAGNOSIS
WECM / Emerald eZA products have many incorporated electronic protections:
Input under voltage protection;
Locked rotor protection;
Overload protection;
Over temperature protection.
Output overcurrent / short-circuit protection;
WECM / Emerald eZA products have a LED in the opening on the back side that indicate the solution
status and to help in the fault diagnosis:
The LED will stay ON while the motor is running (speed bigger than zero);
The LED will stay OFF while the motor is stopped (speed equals to zero);
DANGER!
The LED in OFF condition doesn`t mean that there is no power supply to the drive;
Make sure that the input power supply is disconnected before do any maintenance
in the product.
If the Fire Mode function is active, the failures will be detected, but ignored by
WECM / Emerald eZA, i.e., will not block the IGBTs. If the motor was spinning, will
continue spinning. For more information see item 6.5.
The LED will blink in case of any fault. The below table indicates the blinking behavior according
the fault type:
Blinking periods
2
3
6
9
10
11
Communication timeout fault: failure in the drive to motor communication;
Watchdog timeout fault: failure in the drive processor / software.

7.1 - INFORMATION FOR CONTACTING TECHNICAL SUPPORT

For technical support and servicing, it is important to have the following information in hands:
Motor model, Batch number, and manufacturing date available in the motor nameplate (refer to
item 4);
Installed software version available in the drive label (refer to item 4).
Table 7.1 - The blinking behavior according to fault type
Fault
Under voltage
Overload / over current
Overvoltage
Communication timeout
Watchdog timeout
Locked rotor
ON time Off time
0,1 sec 0,1 sec
0,25 sec 0,25 sec
WECM / Emerald eZA Manual | 39
www.weg.net
Wait / interval time (off)
-
2 sec