DROPSA 2487010 Manual de uso y mantenimiento - Página 8
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5.2.2 Electro pneumatic change-over
The main change-over parts are:
•
a casing with a central lapping hole that makes it possible to
make a dry seal connection with the inversion piston, which
is facilitated by a balancing system;
•
a ground piston with a dual coupling surface, with grooves
that improve lubrication and the seal at high pressures;
•
the inversion phase is facilitated by a balancing system;
•
sealing gaskets that can support high pressure levels, by
means of a pressurised chamber, optimising the inverter
function;
•
Two single acting pneumatic actuating cylinders, controlled
by a 5/ 2 type solenoid valve.
GENERAL NOTE FOR ALL ELECTROMAGNETIC INVERTERS:
A 2-5 second de-energising delay should be set for the electromagnets to permit them to complete their
inversion after the closing time for the end of line pressure switch.
5.2.3 Hydraulic change-over (optional)
The pump can also be equipped with a hydraulic change-over valve that
activates when the pressure is made on each line.
The pressure indicator is equipped with a pin that allows the operator to
visualize the operation of the valve.
The valve can also be equipped with cycle sensor (certified for hazardous
areas) to monitor the inversion phases of the valve.
5.2.4 ELECTRIC EQUIPMENT
"DROPSA" electric equipment has been designed with the purposes of supplying a system that is complete with all commands
necessary for the automatic operation controlled by safety signals for centralised lubrication systems. The primary voltage is 400
VAC and 50 Hz, other voltages are provided upon request. For more information about the available versions, contact the
Dropsa technical sales department.
Type of probe
Type of inverter
LASER PROBE
Electromagnetic
(24V cc standard
version)
Out NO e NC
Electro pneumatic
(1 threshold)
Electromagnetic
LASER PROBE
24V cc Out 4÷20mA/2
NO (4 thresholds)
Electro pneumatic
8
Voltage
Code Electrical
V
apparatus VIP5 PRO
24 VDC
1639211
110 VAC
*
220 VAC
*
24 VDC
1639211
110 VAC
*
220 VAC
*
24 VDC
1639211
110 VAC
*
220 VAC
*
24 VDC
1639211
110 VAC
*
220 VAC
*
Code Electrical
Code Electrical apparatus
apparatus VIP5
PLUS
1639210
*
*
1639210
*
*
1639210
*
*
1639210
*
*
Photo 4
with PLC
1637008
1637009
1637010
1637011
1637012
1637013
1637001
1637003
1637004
1637005
1637006
1637007