Nederman FlexPAK Standard, Инструкция по установке и обслуживанию

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FlexPAK
Error Possible cause Solution
Defect pressure
sensor. The pressure sensor is connected to PLC input 8 and an in-
verter input +AI1 terminal (2). The sensors measurement
range is 0 to -40 kPa. The signal goes from 10 to 0 V and 0
to -40 kPa, which gives 10 V at 0 kPa and 0 V at -40 kPa.
Measure the voltage signal at the inverter, between ter-
minals 2 (+) and 7 (-). When the motor is off, the input sig-
nal at terminal 2 has to be 10 V, and when the motor is run-
ning, the signal is 0 to10 V depending on the pressure level
in the system.
To check whether the sensor input is working, disconnect
the pressure sensor wire at terminal 2 and connect a jump-
er between terminals 2 and 1. Press the OK button on the
PLC to reset the alert.
If the alert disappears, the pressure sensor input is working
and you will have to replace the pressure sensor.
Deposits or blockage in ducts on
the way to the unit. • Clean the ducts.
• Check the transport velocity.
The duct system is not properly
dimensioned. Re-dimension the duct system or add an extra suction
source.
Valves in the duct system are not
working. Check the duct system valves.
Low vacuum or air
flow.
The filter cleaning does not work
or is insufficient. Check the function of the filter cleaning.
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