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N.
Read/
Data
Write
Type
300
R
N
301
R
N
302
R
N
320
Reserved to Varian service
to
399
400
R
A
402
R
A
500
Reserved to Varian service
503
R/W
N
504
R/W
L
NOTES
1. Automatic means that when the controller
stops, the vent valve is opened with a delay de-
fined by window n. 126; when the controller
starts, the vent valve is immediately closed.
2. On command means that the vent valve is
opened or closed by means of window n. 122.
3. These commands remove the pump motor
supply for a short time. If they are used con-
tinuously, they can cause the pump stopping.
7
6
5
4
TOO HIGH LOAD
SHORT CIRCUIT
OVERVOLTAGE
AUX FAIL
Window N. 206 Bit Description
Description
Admitted
Values
9
Cycle time
0 to 4x10
in minutes
(zeroed by
the reset
command)
9
Cycle num-
0 to 4x10
ber (zeroed
by the reset
command)
9
Pump life in
0 to 4x10
hours (ze-
roed by the
reset com-
mand)
CRC
QE5XXXX
EPROM
(where "XXXX"
(QE)
are variable)
CRC Pa-
PA5XXXX
ram. (PA)
(where "XXXX"
are variable)
RS 485 ad-
0 to 31
dress
(default = 0)
Serial type
0 = RS 232
select
1 = RS 485
(default = 0)
3
2
1
0
NO CONNECTION
PUMP OVERTEMP.
CONTROLL. OVERTEMP.
POWER FAIL
INLET SCREEN INSTALLATION
The inlet screen mod. 969-9316 prevents the
blades of the pump from being damaged by debris
greater than 0.7 mm diameter.
The inlet screen, however, does reduce the pump-
ing speed by about 10%.
The inlet screen is fitted in the upper part of the
pump, as shown in the figure.
The screen can be mounted on each pump.
The screen can be removed as shown in the fol-
lowing figure.
35
TECHNICAL INFORMATION
87-900-973-01
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