Enerpac ZU4 Serie Manual Del Usuario página 4

5.2 Manual Valves with 1 or 2 Button Pendant Operation
Also known as a Jog Pump – oil flow is controlled by the valve,
the motor is controlled by the pendant (see Fig. 8).
1. Up Arrow = Momentary Motor On (Motor turns Off when
button is released)
2. On/Off = Toggle Motor On or Off (if equipped)
Shroud On/Off = Toggle motor On or Off
One Two
button button
Figure 8, Pendant Button Variations
5.3 VE33 and VE43 Electric Valves with 3-Button
Pendant Operation
Also known as a Remote Pump - oil flow and motor are both
controlled by the pendant (see Fig. 8).
1. Up Arrow = Momentary Advance
2. Down Arrow = Momentary Retract
3. On/Off = Toggle Motor On or Off
Shroud On/Off = Toggle motor On or Off
5.4 VE32 Electric Valve with 3-Button Pendant Operation
Also known as a Remote Pump - Oil flow and motor are both
controlled by the pendant (see Fig. 8).
1. Up Arrow = Momentary Advance
2. Down Arrow = Momentary Retract
3. On/Off = Not Used (Disabled)
Shroud On/Off = Toggle motor Off Only
5.5 VE32D Electric Valve with 1-Button Pendant Operation
Also known as a Dump Pump - Oil flow and motor are both
controlled by the pendant. The pump will run and the cylinder
will advance when the pendant button is pressed. Releasing the
button will stop the pump and the cylinder will retract
automatically (see Fig. 8).
1. Up Arrow = Momentary Advance
Shroud On/Off = Toggle Motor Off Only
5.6 Valves with foot switch (see Fig. 9)
A. All valves except VE32D
1. Momentary advance
or motor on
2. Momentary retract (if
applicable)
B. VE32D Valves
1. Not used.
2. Momentary advance.
Shroud On/Off = Toggle Motor On or Off
Three
button
Up arrow
Down arrow
ON / OFF
Fig. 9
5.7 Automatic Pump
Transducer Option
In addition to the normal operation details listed above, pumps
with the optional pressure transducer have the ability to react
automatically at a user-defined pressure value. The specific
operation of the motor / electric valve is factory set by pump
model. See the "Pump-Model-Matrix", Page 16, Table 3 for
details by pump model number. See section 6.4 A-B and
6.5 A – C for setting the pressure values.
A. SET PRES (Firmware 5.5 and earlier)
When the "SET PRES" pressure value is reached, the pumps will
either shift the valve (VE33 and VE43 electric valve) or turn the
motor off.
B. AUTOMODE (Firmware 5.6 and later)
1. AUTOMODE OFF
The pump displays pressure as a simple pressure gauge, no
additional actions will be performed regardless of HI PRESS and
LO PRESS values. Note: The normal operations menu shows
"OK" in the text area when AUTOMODE is set to OFF.
2. AUTOMODE ON and LO PRESS OFF
When the HI PRESS pressure value is reached, the pumps will
either shift the valve (VE33 and VE43 electric valve) or turn the
motor off (this is similar to SET PRES in firmware 5.5 and earlier).
Note: The main operations menu text will change from "OK" to
"AUTO" to notify the operator that the pump WILL take control
when the HI PRESS pressure value is reached.
3. AUTOMODE ON and LO PRESS greater than 0
The pump will de-energize the motor / electric valve when the HI
PRESS value is reached and re-energize the motor / electric
valve when the LO PRESS value is reached, acting as a pressure
make up pump. Note: For an additional notice to the operator,
the main operations menu text will change from "AUTO" to
"AUTO ON" and the LCD backlight will flash when the pump
reaches HI PRESS and takes control of making up pressure.
Warning: When the LCD backlight is flashing and "AUTO
ON" is displayed, the pump will automatically start the
motor or energize the valve to rebuild system pressure
without input from the operator. Set "AUTOMODE" to off and
disconnect electrical power to pump before working on pump or
hydraulic system.
a. Control Buttons
i. Before "HI PRESS" value is reached:
Pendant buttons and shroud On / Off button function as
described in sections 5.1 – 5.4.
ii. After "HI PRESS" value is reached:
Press and release any button on pendant (if applicable) or
shroud stops the automatic cycle and "AUTO" is shown on
the LCD. (Pressing the pendant Down-Arrow (if applicable)
will also retract the cylinder. Pressing the motor On/Off
button will also de-energize the motor).
To restart the automatic cycle, press and release the
pendant Up-Arrow button (if applicable) or the motor On/Off
button (See section 5.1, 5.2, or 5.4).
Caution: Due to motor coast down, valve shift time, and
system oil capacitance, always set the user adjustable
relief valve 200 psi above the "SET PRES" or "HI
PRESS" value to prevent pressure spikes.
4
Operation With Pressure