Power Jumper Configuration—Frame 7
PowerFlex 755T products contain protective MOVs, common mode capacitors, and discharge resistors. To guard against drive damage and/or operational problems, these devices must be properly configured according to the tables in this section.
Common Mode Capacitor, MOV, AC EMI Capacitor, and Discharge Resistor Circuits
The following frame 7 power jumpers are discussed in this section.
- PE-A – MOV on the AC precharge control circuit board
- PE-A1 – MOV on the TVSS module
- PE-A1 – MOV on the TVSS module PE-A2 – Common mode capacitors on the AC common mode filter circuit board
- DR – DC bus conditioner capacitor discharge resistor
Common Mode Capacitor, MOV, AC EMI Capacitor, and Discharge Resistor Circuits—Frame 7
DC Bus Conditioner Discharge Resistor—Frame 7
IMPORTANT:
The default power jumper settings are:
- All power jumpers are installed in the connected (IN) position.
- All power jumpers are installed in the disconnected (OUT) position when the bus conditioner for marine applications (-P51) is selected.
ATTENTION:
Risk of equipment damage exists.
The drive power source type must be accurately determined. The power jumpers must be configured for the power source type according to the recommendations in the PowerFlex 755T Input Product RF Emission Compliance and Installation Requirements.
ATTENTION:
Risk of equipment damage exists.
Hazard of equipment damage exists if jumpers are not properly disconnected or are set differently between power and LCL filter modules. Secure a disconnected jumper in the socket or on the insulated spacer that is provided and verify that all modules are configured identically.
Grounding Scheme | EMC Option | PE-A | PE-A1 | PE-A2 | DR |
|---|---|---|---|---|---|
MOV on the AC Precharge Control Circuit Board | MOV in the TVSS Module | Common Mode Caps on the AC Common Mode Filter Circuit Board | Discharge Resistor on the DC Bus Conditioner | ||
Factory Default | C3 | Connected (In) | Connected (In) | Connected (In) | Connected (In) |
Grounded | C2 | Connected (In) | Connected (In) | Connected (In) | Connected (In) |
Grounded | C3 | Connected (In) | Connected (In) | Connected (In) | Connected (In) |
Ungrounded/High-resistance Ground AC fed ungrounded Impedance grounded B phase ground | — | Disconnected (Out) | Disconnected (Out) | Disconnected (Out) | Connected (In) |
Marine Ungrounded / High Resistance Ground | — | Disconnected (Out) | Disconnected (Out) | Disconnected (Out) | Disconnected (Out) |
The EMC C2 option listed meets EN61800-3 Category C2 for conducted emissions. Ungrounded and high-resistance ground systems do not meet the EMC Directive due to the disconnected jumper positions. | |||||
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