7.7.3
myCro Function Description
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Drive enables via both digital input and analog input together
The drive can be started only if both digital and analog input are availa‐
ble: For digital input, select one of them to "22: Enable for myCro" by
setting one of F2.16...F2.24 = 22, and connect this DI terminal to switch.
Also EFC run command source must be set to "panel" by setting E0.01
= 0, for example, to make this function possible. For analog input, the
feedback of oxygen sensor will be monitored via the input channel that
has been selected (by setting one of F2.00...F2.02 to "4: Oxygen feed‐
back (for myCro)"), and the drive can be started only if the feedback is
higher than F4.70, or can be stopped only if the feedback is lower than
F4.71.
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Speed variable pump with constant pressure control
For myCro function, the pump needs to be accelerated rapidly to N_min,
and then accelerated slowly until the pressure command is archived.
myCro default setting is loaded by setting F1.20 = 4. The parameters
are F3.12, F3.13, F3.16, F3.32, F3.33 and F3.36.
●
myCro specialized warning and error message
Warning 1 : oxygen too high
Converter raises warning message if oxygen feedback is higher than
[F4.72] for [F4.73] hours. Warning index will be shown via displaying pa‐
rameter d0.88 = 11, and this also set a high signal to a DO or relay, de‐
pending on which of F2.36...F2.38 has been set to 4.
This warning is working only if F1.20 = 4, no matter that converter is in
standby or operation.
Warning 2 : pressure too low
Converter raises warning message if the pressure feedback is lower
than [F4.74] bar for [F4.75] s.
Warning index will be shown via displaying parameter (also for fieldbus)
d0.88 = 12, and this also set a high signal to a DO or relay, depending
on which of F2.36…F2.38 has been set to 5.
This warning is working only if F1.20 = 4, and converter is in operation.
Error : pressure too high
Converter raises error if pressure feedback is higher than [F4.16] bar for
[F4.18] s. For more information, please see
Actual pressure monitoring, which is a FcP general function, will be ac‐
tive, if control bit2 of F4.00 has been set to 1. Not as other myCro warn‐
ing controlled by F1.20.
DOK-SYTROX-FCP5020****-IT01-EN-P
Bosch Rexroth AG
123/201
Frequency-controlled pump drive system Sytronix FcP 5020
Commissioning of Sytronix FcP 5020 System
