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Speed Adjustment
By pressing CYCLE NUMBER and PUMP CURRENT
push button together for at least five seconds the
processor enters in a routine where it is possible to
adjust the rotational speed.
The display shows:
S P E E D
A D J U S T
4 2
K R P M
Press the PUMP push button to select the digit to be
changed and when press the CYCLE push button to
change the value.
The speed value can be changed from 28 to 42 KRPM.
Different values are rejected. The speed adj. Sets the
LOW SPEED freq. to 2/3.
The speed can be adjusted only when the pump is
stopped.
Starting the Pump
If the forepump and vent device are not operated by the
controller, close the vent valve and switch on the
forepump.
Before starting the pump the cooling mode must be
selected.
With the FRONT panel operation selected, the
REMOTE and RS 232 operations are inoperative;
conversely,
the
CYCLE
CURRENT push-buttons are always active, even when
the operating mode selected is REMOTE or RS 232 /
422 / 485.
NOTE
NOTE
NOTE
NUMBER
and
PUMP
•
Press the START push-button (or use the remote or
RS 232 start signal), and the display shows:
S O F T
S T A R T
[
.
.
.
Where the sign minus (-) become a square ( ž ) when
the pump finish the ramp-up step. The active step is
indicated by a flashing square ( ž ).
As the ten steps are fully covered, the pump will reach
the Normal operation. If during the Soft Start mode the
current drawn by the pump exceed 200 W the speed of
the pump is decreased to maintain the maximum power
allowable (200 W).
•
If the Soft Start mode has been deselected the
display will change and shows:
P U M P
I
1 2
X X
where:
•
1 2 = contrast inverted identifies the set
condition:
•
1 is displayed when relay R1 is de-energized and
the related output is zero voltage.
•
2 is displayed when relay R2 is energized and
the related output is 24V.
XX KRPM = indicates the actual theoretical rotational
speed of the pump as a function of the controller output
frequency (range 3 to 42 KRPM).
91
TECHNICAL INFORMATION
O N
.
.
.
.
.
.
.
S
S T A R T
K R P M
87-900-877-01 (E)
]
I
N G
point
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