Enerpac ZW4-5 Manual De Instrucciones página 12

8.1 Pressure Transducer Installation
Install pressure transducer into desired gauge port on valve
manifold. "GA" measures "A" port pressure, "GB" measures "B"
port pressure (if applicable), and "GP" measures pump pressure
before the control valve. NOTE: Factory installed pressure
transducers for Pallet De-Coupling Pumps are installed in port
"GP".
Disconnect unit from power supply before opening electrical
box. Remove LCD half and one small hole plug from back panel.
Route wire through back panel, connect to power board (see
figure 10), and secure strain relief. Install shroud half.
The microprocessor will automatically detect the pressure
transducer and add the "UNITS" and "DWELL On/Off" menus
during the following power up. Initial pressure transducer offset
and gain values are permanently stored in the microprocessor
memory and allow the pressure transducer to be used without
further setup. If refinement is needed to certify the LCD reading
to a master gauge, see Table 3, "Z-Class Pressure Transducer
Calibration", for calibration procedure.
DC9897827 Single Phase /SSR Power Board
Motor leads
Terminal to
A1/A2 on SSR
Flat ribbon
cable terminal
Oil level switch
Oil temp switch
Pressure switch
Filter
Pressure transducer
Fan
DC9652827 Three Phase Low-Voltage Power Board
Overload relay
Contactor coil
Flat ribbon
cable terminal
Oil level switch
Oil temp switch
Pressure switch
Filter
Pressure transducer
Fan
Line in
Level temperature
Primary fuse
Heat exchanger
Pendant
Retract
Advance
Secondary
fuse
Line in
Primary fuse
Pendant
Retract
Advance
Pressure transducer
Secondary
fuse
Figure 10, Electric Power Board Configuration
12
Variable Rate Display of Pressure
The pressure transducer is very accurate and measures
pressure real time. To aid the operator when pressure is
changing rapidly, Z-Class provides a variable rate display.
Pressure values are updated 5x per second on the display.The
microprocessor will automatically change the increment value
based on rate of pressure change, increments are 50, 100, 500,
and 1000 psi. When the rate of pressure change is slow, the
display will update in 50 psi increments. When it changes
rapidly, the display will update in 1000 psi increments.
9.0 TROUBLESHOOTING (SEE TROUBLESHOOTING
GUIDE)
Only qualified hydraulic technicians should service the pump or
system components. A system failure may or may not be the
result of a pump malfunction. To determine the cause of the
problem, the complete system must be included in any
diagnostic procedure.
The following information is intended to be used only as an aid
in determining if a problem exists. For repair service, contact
your local Authorized Enerpac Service Center.
ZE pump Viewed
From Back of Enclosure
Filter
switch
Pendant
Motor
DC9449827 Three Phase High-Voltage Power Board
Overload relay
Contactor coil
Flat ribbon
cable terminal
Oil level switch
Oil temp switch
Pressure switch
Filter
Fan
Pressure switch/
transducer
Valve cord A
Valve cord B
Power cord
Line in
Primary fuse
Pendant
Retract
Advance
Secondary
fuse