Figure 5
Digital operator screen view
Table 4
Displayed parameters
Parameter code Parameter descripon
U1-01 Reference frequency (set to 450 Hz)
U1-02 Actual frequency (Hz)
U1-03 Output current (A)
Transient overload protecon
The pump operates an overload protecon condion such that if the load exceeds the
pumps c
apacity, the pump will momentarily stop before restarng automacally to aempt
pump down again. This cycle will repeat to a maximum 10 mes aer which, if the pump is
sll subjected to the overload, the pump will trip, the alarm indicator LED will show a
constant RED and the pump will stop.
Status indicators
Refer to Figure 2 on page 12.
Shut down the pump
WARNING:
Risk of injury
. Do not remove the inlet connecons unl the pump has been allowed to
stop rotang and the power and N
2
supply has been isolated. The pump can take up to
three minutes to completely stop.
CAUTION:
Do not disconnect the pump fr
om the electrical supply unl the pump has stopped
completely.
The pump can be shut down using either the front panel controls, the digital operator (if
ed) or the 15-way D-type connector in either parallel or serial control mode.
A770-10-880A - Operaon
Page 25
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