Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE User Manual
Page 56
Operating Instruction
56
other following pumps. (Start-Value = REQUIRED VALUE –ACT. VALUE DEC.)
Press on the Technovar to change to
10.22.3 Release frequency of the following controller
ENABLE SEQ. CTL.
58.0 Hz
Release of the follow-up pump only when the start-
value
is reached and the lead pump
has reached the programmed frequency. (Adjustable from 0.0 Hz to 70 Hz).
If you do not want to start a following pump this value has to be set higher than the
maximum frequency.
This parameter is also used to start a constant speed pump, when Simple Multicontr. is
set). When this frequency level is reached, the potential free contact of the relay X2/5 –
X2/6 will be closed.
Press on the Technovar to change to
10.22.4 Switch Interval
SWITCH INTERVAL
12 hours
for changing the master pump and follow-up pump in
order to achieve even operating hours of the pumps
Adjustable between 1 hour and 100 hours. If it is set higher than 100 hours, the automatic
changeover is deactivated).
Manual change of master pump in the 1
st
display with the -button.
Press on the Technovar to change to
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