Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 50)

50 Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013
Chapter 1 Detail Drive Configuration and Operation
Drive Overtemperature
(Frame 9 Only) The drive overtemperature is 90 °C. The fault is detected if the heat-sink
temperature, parameter 313 [Heatsink Temp] or parameter 345 [Drive OL
JnctTmp] exceeds 90 °C.
The open loop current limit is originally designed for 25% of the duty cycle at
110% output current. On the other side, the High Horsepower drive allows 10%
of duty cycle at 110% output current. The open loop current limit function can
not protect the drive overtemperature fault.
Drive Peripheral Interface
(DPI) DPI is an enhancement to SCANport that provides more functions and better
performance. SCANport was a CAN based, Master-Slave protocol, created to
provide a standard way of connecting motor control products and optional
peripheral devices together. It allows multiple (up to 6) devices to communicate
with a motor control product without requiring configuration of the peripheral.
SCANport and DPI both provide two basic message types called Client/Server
(C/S) and Producer/Consumer (P/C). C/S messages are used to transfer
parameter and configuration information in the background (relative to other
message types). P/C messages are used for control and status information. DPI
adds a higher baud rate, brand specific enabling, Peer-to-Peer (P/P)
communication, and Flash Memory programming support. This communication
interface is the primary way to interact with, and control the drive.
Client/Server
C/S messages operate in the background (relative to other message types) and are
used for non-control purposes. The C/S messages are based on a 10 ms “ping”
event that allows peripherals to perform a single transaction (i.e. one C/S
transaction per peripheral per time period). Message fragmentation (because the
message transaction is larger than the standard CAN message of eight data bytes)
is automatically handled by C/S operation. The following types of messaging are
covered:
• Logging in peripheral devices
• Read/Write of parameter values
• Access to all parameter information (limits, scaling, default, etc.)
• User set access
• Fault/Alarm queue access
• Event notification (fault, alarm, etc.)
• Access to all drive classes/objects (for example Device, Peripheral,
Parameter, etc.)
IMPORTANT The PowerFlex 700S only supports the DPI communication protocol.
The PowerFlex 700S will not communicate with SCANport devices.
The PowerFlex 700S does not support LED HIMs.