SMC Networks HRSH090 Series, Operation Manual

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HRX-OM-R026
Chapter 5 Display and setting of various functions
HRSH Series 5.17 Pump operation mode function
5-39
5.17 Pump operation mode function
5.17.1 Pump operation mode
The product can be set the pump operation mode as follows below.
●
Pressure controlled mode
The pump of the product operates so that the circulating fluid discharge
pressure becomes the set pressure automatically.
If the connected piping
’s resistance is small, there is a possibility that the
actual pressure does not rise to the set pressure. In this case, the
pressure cannot rise due to the small piping resistance even though the
pump discharges the maximum flow. This situation is not malfunction of
the product.
If the connected piping
’s resistance is large, there is a possibility that the
actual pressure does not lower to the set pressure. In this case, the
pressure cannot lower due to the large piping resistance even though the
pump discharges the minimum flow. This situation is not malfunction of
the product.
●
Frequency set mode
The pump of the product is operated according to the set pump operation
frequency.
If the pressure control mode is not necessary, use this mode.
5.17.2 How to check the pump operation mode and value setting
The table below explains the setting items of the accumulated time reset and
the initial values.
Table 5.176-1 List of pump operation mode and set values
Display Item Content
Initial value
(Default setting)
Pump operation
mode
Set the pump operation mode. PRS
Circulating fluid
discharge pressure
Set the circulating fluid discharge pressure
for the pressure controlled mode.
0.50
Pump operation
frequency
Set the pump operation frequency for the
frequency set mode.
----
Refer to each paragraph for the detail of pump operation mode and value
setting.
Tips]
When AL.25(circulating fluid discharge pressure sensor failure) occurs in a
pressure control mode, a pump operation mode shifts to a frequency setting
mode automatically.