4 Function Specification
FcP 5020 ASF is developed based on the EFC 5610 hardware platform to be
used for pressure and flow control. FcP 5020 has the functionality to automatic
switch between pressure and flow mode. The typical application is shown as be-
low.
This document only covers FcP 5020 relating functionalities. Please
review documentations in
chapter 2 "Scope of Supply" on page 4
prior to applying power to EFC drive.
Control: Drive control
P
ACT
: Pressure actual value
P
CMD
: Pressure command
Q
CMD
: Flow command
Fig. 4-1: The diagram of typical application
FcP 5020 receives the pressure command generated by an external controller,
i.e. PLC or CNC, and the pressure feedback generated by the actual pressure
sensor mounted in the hydraulic system. By using both of the pressure com-
mand and the pressure feedback, the frequency converter is able to control the
motor speed automatically and in turn regulate the output flow of hydraulic
pump. The same mechanism is applicable to flow-based control mode to achieve
the same regulation purpose on the output flow of hydraulic pump.
The product provides the following features.
●
Pressure / flow setting
– Easy command setting (internal commands, and 4 switchable parameters
for pressure command)
– Command setting possibility via analog or communication*
– Unique digital filtering for pressure command rising and dropping
– Preset standby mode (with minimum flow and pressure)
* External hardware for communication is required.
FcP 5020
Bosch Rexroth AG
Function Specification
DOK-RCON03-FCP5020****-QU04-EN-P
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