Grundfos SMART Digital DDA, Инструкция по установке и эксплуатации

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E
ngl
ish (
G
B)
37
* Depending on setting
Pressure sensor
(Warning)
• Broken FlowControl cable
• Sensor defect
• Pressure sensor not correctly
calibrated.
• Check plug connection.
• Change sensor if necessary.
• Calibrate pressure sensor correctly
(see section 6.8.2 Calibration of pressure
sensor ).
Motor blocked
(alarm)
• Backpressure greater than
nominal pressure
• Damage to gears
• Reduce backpressure.
• Arrange for repair of gears, if necessary.
Bus
(Warning/alarm*)
• Fieldbus communication error • Check cables for correct specification and
damage; replace if necessary.
• Check cable routing and shielding; correct
if necessary.
E-Box
(Alarm) • E-Box connection error
• Faulty E-Box • Check plug connection.
• Replace E-Box if necessary.
Cable break
(Alarm)
• Defect in analog cable 4 - 20 mA
(input current < 2 mA)
• Check cable/plug connections and
replace, if necessary.
• Check signal transmitter.
Service soon/
now
(Warning) • Time interval for service expired • Perform service (see section 7.2 Perform
service ).
Display in the
’Alarm’ menu
Possible cause Possible remedy