Bosch Rexroth EFC 3600, Operating Instructions Manual, Page: 113 / 238

1. If the running time of a stage is set to be 0, simple PLC will skip this
stage.
2. PID control mode has higher priority compared with Simple PLC con‐
trol. That is, if the PID control mode is active, then Simple PLC con‐
trol will be disabled internally. So, the precondition of running Simple
PLC is to disable PID control.
3. PLC can be paused / prohibited by external terminals and PLC cy‐
cle / phase completion can be signalised by digital output. See more
details in parameter [E0.01]~[E0.05] and [E1.00]~[E1.02].
Rotation direction command source differs if running command source is different, as
shown in the table below:
Frequen‐
cy source
RUN command
source
Rotation direction Acc. / Dec. time
Multi-
speed
Via operating panel
Function codes:
[E2.35], [E2.37], [E2.39], [E2.41],
[E2.43], [E2.45], [E2.47], [E2.49]
Function codes:
[E2.35], [E2.37],
[E2.39], [E2.41],
[E2.43], [E2.45],
[E2.47], [E2.49]
Via external termi‐
nals
External terminals, that is, 2-wire /
3-wire control mode
Via communication Set by communication
Simple
PLC
Via operating panel Function codes:
[E2.35], [E2.37], [E2.39], [E2.41],
[E2.43], [E2.45], [E2.47], [E2.49]
Via external termi‐
nals
Via communication
Fig.8-4: Rotation direction and Acc. / Dec. for multi-speed / Simple PLC
8.9 Group E3: PID Control
PID control is a common approach used in process controls such as flow control, pres‐
sure control, temperature control and other process controls. Proportional, integral and
derivative operations are based on the differences between reference values and their
feedback, to adjust the output frequency of the frequency converter, form a negative
feedback system, and keep the controlled values stable at reference values.
The basic control principle is shown as the figure below:
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600 Bosch Rexroth AG
Parameter Settings
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