Bosch Rexroth VFC 3210, Руководство по эксплуатации, Страница: 176 / 282

12.9.10 Pump Protection Function
Two modes of pump protection are available:
●
Pump dry protection: Protecting the pump from running without water load
(e.g., water pump without water)
●
Pump leakage protection: Protecting the pump from running with leakage
Both protection modes are realized by comparing the PID feedback with the PID
reference when the frequency converter is running at [E0.09] 'Output frequency
high limit'.
Code Name Setting range Default Min. Attri.
E5.05 Pump dry protection threshold 0.0 %… [E5.08] 30.0 0.1 Run
E5.06 Pump dry protection delay
0.0…300.0 s
(0.0 s: Inactive)
0.0 0.1 Run
E5.07 Pump dry protection delay at start-up 0.0…300.0 s 30.0 0.1 Run
E5.08 Pump leakage protection threshold 0.0…100.0 % 50.0 0.1 Run
E5.09 Pump leakage protection delay
0.0…600.0 s
(0.0 s: Inactive)
0.0 0.1 Run
E5.10 Pump leakage protection delay at start-up 0.0…600.0 s 60.0 0.1 Run
E9.05 Last error type
24: Pdr, pump dry
0 – Read
E9.06 Second last error type 0 – Read
E9.07 Third last error type 0 – Read
The conditions to trigger the pump dry protection:
●
Frequency converter runs at the [E0.09] 'Output frequency high limit'
●
([PID feedback] ÷ [PID reference]) < [E5.05] 'Pump dry protection threshold'
●
Duration ≥ [E5.06] 'Pump dry protection delay'
When the pump dry protection is triggered, the error code 'Pdr' will be displayed
on the operating panel. The error message '24: Pdr, pump dry' can be read via
parameters E9.05...E9.07.
The conditions to trigger the pump leakage protection:
●
Frequency converter runs at the [E0.09] 'Output frequency high limit'
●
([PID feedback] ÷ [PID reference]) < [E5.08] 'Pump leakage protection thresh-
old'
●
Duration ≥ [E5.09] 'Pump leakage protection delay'
When the pump leakage protection is triggered, the warning code 'PLE' will be
displayed on the operating panel.
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Functions and Parameters VFC 3210
148/253
DOK-RCON04-VFC3210****-IT01-EN-P