Enerpac ZE3-6 Carnet D'instructions page 5

One Two
button button
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Figure 8, Pendant Button Variations
5.2 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
5.3 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
5.4 Valves with foot switch (see Fig. 9)
A. All valves except VE32D
1. Momentary advance or motor on
2. Momentary retract (if applicable)
Shroud On/Off = Toggle Motor On or Off
B. VE32D valves
1. Not used
2. Momentary advance
Shroud On/Off = Toggle Motor Off
5.5 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. AUTOMODE
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 withLO 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
Three
button
Up arrow
¤
Down arrow
ON / OFF
Figure 9
Operation With Pressure
motor off. 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– 5.4).
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.
5.6 Automatic Pump Operation With Pressure Switch Option
With the optional pressure switch installed, the electric motor
will automatically stop and re-start at a user defined setting. This
setting is entered via the pressure switch adjusting screw.
1. Connect unit to power, the LCD will show "OK".
2. Operate pump via section 5.1 - 5.4.
3. When the "A" port pressure reaches the user defined limit,
the pressure switch opens, the motor is de-energized, the
LCD screen shows "AUTO ON" and the back light will flash
(the microprocessor is now aware that a pressure switch is
controlling the pump).
Warning: When the LCD backlight is flashing and
"AUTO ON" is displayed, the hydraulic system is under
pressure and the pump will automatically start the motor
to rebuild system pressure without input from the operator.
Release hydraulic pressure and disconnect electrical power to
pump before working on pump or hydraulic system.
4. When the "A" port pressure drops 115-550 psi, the pressure
switch closes and the motor is re-energized.
5. Pressing and releasing any button on the pendant (if
applicable) or shroud will stop this automatic cycle.
a. If the pressure switch is closed (motor energized) when
the button is pressed, "AUTO" is shown on the LCD.
b. If the pressure switch is open (motor de-energized) when the
button is pressed, "P Switch Open" is shown on the LCD.
c. Pressing the motor activation button (Section 5.1 - 5.4)
reactivates the automatic pressure switch operation.
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