Rockwell Automation 20L, LPM20 PowerFlex 700 Active Converter Power Module - Manual (Page 23)

Start Up 2-5
PowerFlex 700L Active Converter Power Module User Manual
Publication PFLEX-UM002D-EN-P
Exchanging Data
DPI Type 3 communication is used to exchange control and status
information between the Inverter and the Converter. This provides a
mechanism to start and stop the Converter as the Inverter is started and
stopped. It also transfers the minimum DC Link voltage required for the
given motor voltage to the Converter, and any Converter fault codes back to
the Inverter so all faults are maintained in the Inverter’s fault queue. The
data exchanged is displayed in these Active Converter parameters:
No setup is required to configure the Type 3 communication. The Converter
requests a Type 3 connection at power up and, when the connection is
complete, Converter parameter 320 - [Connect Status] shows which
communication types are active. The use of Type 3 communication for
exchange of data is important in that none of the normal data links are used
for this communication. By default, all four sets of DPI data links remain
available for use in a 20-COMM-* adapter.
The automatic starting and stopping of the Active Converter requires the
Converter to be configured for “0 = Run On Start” using Converter
parameter 50 - [Start Config]. In this case, when the Inverter is started or
jogged, the Converter is enabled and the Inverter sequencing delays running
the Inverter for up to 500 milliseconds, allowing the Converter to close the
precharge bypass contactor. When the Inverter is stopped, the Converter
continues to run for the time configured in Converter parameter 53- [Turn
Off Delay]. On a subsequent start or jog, the Inverter does not need to wait
for the precharge to close if the Converter is still running.
•
70 - [Converter Control]
•
72 - [Converter Min Vdc]
•
71 - [Converter Status]
•
73 - [Converter Fault]
Inverter DPI Type 3
Producer / Consumer
Converter DPI Type 3
Producer / Consumer
AC 70 - [Converter Control]
AC 72 - [Converter Min Vdc]
AC 71 - [Converter Status]
AC 73 - [Converter Fault]
Converter Sequencing
Precharge
Contactor
Converter
Enable
Inverter
Functions
PF700 AC
Parameters
Converter
Functions
Inverter
Communications
Converter
Communications
Start Jog
Inverter Sequencing