Enerpac Z-Class, Z H Series, Z L Series, Z 2 S Series, Z 1 0 Series Instruction Sheet

Instruction Sheet

POWERFUL SOLUTIONS. GLOBAL FORCE.

LCD Control Panel Operation - Firmware 7.x

L2940 Rev. A 07/09

1.0 SAFETY ISSUES

Read all instructions, warnings and cautions
carefully. Follow all safety precautions to avoid

personal injury or property damage during system
operation. Enerpac cannot be responsible for damage or injury
resulting from unsafe product use, lack of maintenance or
incorrect product and/or system operation. Contact Enerpac
when in doubt as to the safety precautions and operations. If you
have never been trained on high-pressure hydraulic safety,
consult your distribution or service center for a free Enerpac
Hydraulic safety course.

Failure to comply with the following cautions and warnings could
cause equipment damage and personal injury.

A CAUTION is used to indicate correct operating or maintenance
procedures and practices to prevent damage to, or destruction
of equipment or other property.

A WARNING indicates a potential danger that requires correct
procedures or practices to avoid personal injury.

A DANGER is only used when your action or lack of action may
cause serious injury or even death.

WARNING: Wear proper personal protective gear when
operating hydraulic equipment.

WARNING: Stay clear of loads supported by
hydraulics. A cylinder, when used as a load lifting device,

should never be used as a load holding device. After the
load has been raised or lowered, it must always be blocked
mechanically.

WARNING: USE ONLY RIGID PIECES TO HOLD
LOADS. Carefully select steel or wood blocks that are

capable of supporting the load. Never use a hydraulic

cylinder as a shim or spacer in any lifting or pressing application.

DANGER: To avoid personal injury keep hands
and feet away from cylinder and workpiece
during operation.

WARNING: The system operating pressure must not
exceed the pressure rating of the lowest rated component

in the system. Install pressure gauges in the system to
monitor operating pressure. It is your window to what is happening
in the system.

CAUTION: Avoid damaging hydraulic hose. Avoid

sharp bends and kinks when routing hydraulic hoses.
Using a bent or kinked hose will cause severe back-pressure.
Sharp bends and kinks will internally damage the hose leading to
premature hose failure.

Do not drop heavy objects on hose. A sharp impact
may cause internal damage to hose wire strands.
Applying pressure to a damaged hose may cause it

to rupture.

IMPORTANT: Do not lift hydraulic equipment by the
hoses or swivel couplers. Use the carrying handle or
other means of safe transport.

Z-Class Electric Pumps

CAUTION: Keep hydraulic equipment away from
fl ames and heat. Excessive heat will soften packings

and seals, resulting in fl uid leaks. Heat also weakens
hose materials and packings. For optimum performance do not
expose equipment to temperatures of 65°C [150°F] or higher.
Protect hoses and cylinders from weld spatter.

DANGER: Do not handle pressurized hoses. Escaping
oil under pressure can penetrate the skin, causing
serious injury. If oil is injected under the skin, see a

doctor immediately.

WARNING: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected couplers. If
the cylinder becomes extremely overloaded, components

can fail catastrophically causing severe personal injury.

WARNING: BE SURE SETUP IS STABLE BEFORE
LIFTING LOAD. Cylinders should be placed on a fl at

surface that can support the load. Where applicable, use
a cylinder base for added stability. Do not weld or otherwise
modify the cylinder to attach a base or other support.

Avoid situations where loads are not directly centered
on the cylinder plunger. Off-center loads produce

considerable strain on cylinders and plungers. In
addition, the load may slip or fall, causing potentially dangerous
results.

IMPORTANT: Hydraulic equipment must only be serviced
by a qualifi ed hydraulic technician. For repair service,
contact the Authorized ENERPAC Service Center in your

area. To protect your warranty, use only ENERPAC oil.

WARNING: Immediately replace worn or damaged parts
with genuine ENERPAC parts. Standard grade parts will

break causing personal injury and property damage.
ENERPAC parts are designed to fi t properly and withstand high
loads.

WARNING: Do not use electric pumps in an explosive
atmosphere. Adhere to all local and national electrical
codes. A qualifi ed electrician must do installation and

modifi cation.

WARNING: Keep hands clear of moving parts and
pressurized hoses.

One
Button

Three
Button

WARNING: These pumps have internal factory adjusted

relief valves, which must not be repaired or adjusted
except by an Authorized Enerpac Service Center.

WARNING: To prevent damage to pump electric motor,
check specifi cations. Use of incorrect power source
will damage the motor.

2.0 STARTUP

IMPORTANT:

• Pumps with optional pressure transducer: Review Automode
information in sections 4.0 and 5.0 before starting pump.

• Pumps with optional pressure switch: Review section 6.7 G
before starting pump.

1. Check the oil level of pump and add oil if necessary. Refer to
pump instruction sheet.

2. Make sure the shipping plug has been removed and the
breather cap is installed. Refer to pump instruction sheet.

3. Place manual control valve (all models NOT equipped with
electric valve) in the Neutral position.

4. Connect unit to power. Wait about 2 seconds - until “READY” is
displayed - before pressing any button on shroud or pendant.
Refer to section 6.2 for additional boot sequence information

Note: During the boot sequence, the microprocessor will identify
operation of any button as a potential malfunction and will
prevent the motor from starting. Reset by disconnecting power
for 10 seconds.

5. Adjust relief valve as described in section 5.0.

6. For Motor On/Off and valve operation: refer to sections 3.1
through 3.4 for instructions applicable to your specifi c valve
and pendant confi guration. For models equipped with a foot
switch, refer to section 3.5.

3.0 VALVE, PENDANT AND FOOT SWITCH

OPERATION

2

2

3.1 Manual Valve

Operation

VM32 (See Fig. 1)

1. Advance

2. Retract

Shroud On/Off=
Toggle Motor On or Off

Tank

Tank

Pressure

Pressure

Figure 1

Figure 1

1

1

® ®

Up Arrow/
ON/OFF

Up Arrow

Down Arrow

ON / OFF

Figure 3, Pendant Button Variations

3.3 VE33, VE43 and VEW43P Electric Valves with
3-Button Pendant Operation

Also known as a Remote Pump - oil fl ow and motor are both
controlled by the pendant (see Fig. 3).

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

3.4 VE32D Electric Valve with 1-Button Pendant
Operation

Also known as a Dump Pump - Oil fl ow 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. 3).

1. Up Arrow = Momentary Advance

Shroud On/Off = Toggle Motor Off Only

3.5 Valves with foot switch (See Fig. 4)

A. All valves except VE32D

1. Momentary advance or motor

on

2. Momentary retract (if

applicable)

Shroud On/Off = Toggle Motor

On or Off

Figure 4Figure 4

B. VE32D valves

1. Not used

2. Momentary advance

Shroud On/Off = Toggle Motor Off

3.2 VM33, VM33L, VM43,

and VM43L

(See Fig. 2)

1. Advance

2. Retract

3. Neutral

Shroud On/Off =
Toggle Motor On or Off

3 - In Use

3 - In Use

A

B

B

2

2

Figure 2

Figure 2

A

1

1

3

3

2

4.0 AUTOMATIC PUMP OPERATION
(Pumps equipped with pressure transducer option)

Pumps equipped with the pressure transducer option have the
ability to react automatically at a user-defi ned upper and lower
pressure value. This feature is called “Automode”.

Automode can be turned on or off as desired, at the LCD control
panel.

Automode controlled operation of the motor and electric valve
(if equipped) will vary, depending on pump type . The pump type
appears briefl y on the LCD when power is connected to the
pump.

Refer to Table 1 for a list of the pump types covered in this
manual. Refer to Table 4, Pump Model Matrix, (located near the
end of this document) for a description of the specifi c operational
characteristics for each pump type.

Table 1 - Pump Types

Number Pump/Valve Description

1 . . . . . . . . . . . . . . . . . . . Manual w/LCD (manual valve)

2 . . . . . . . . . . . . . . . . . . . Advance/Hold /Retract (electric valve)

3 . . . . . . . . . . . . . . . . . . . Dump (electric valve)

6 . . . . . . . . . . . . . . . . . . . Remote 3 or 4-Way (electric valve)

8 . . . . . . . . . . . . . . . . . . . Jog (manual valve)

10 . . . . . . . . . . . . . . . . . . 3 or 4-Way Manual Momentary

. . . . . . . . . . . . . . . . . . . Local Mode Default (electric valve)

4.1 Overview of Automode Operation

Refer to paragraphs A through D of this section for an overview
of Automode operation and features.

4.1 A. If Automode is ON, and LO PRESS setting is
greater than zero (Pump types 1, 2, 6, 8 and 10)

I. Before the HI PRESS value is reached:

• The pendant buttons and shroud On/Off button will function as
described in sections 3.1 – 3.4.

• The text “AUTO” will be shown on the LCD, reminding the
operator that Automode is active, and that the pump will take
control when system pressure rises to the HI PRESS value.

II. After the HI PRESS value is reached:

• Pump types 1 and 8: The pump motor will stop.

• Pump type 2: The pump motor will stop and the electric valve
will shift.

• Pump types 6 and 10: The pump motor will keep running and
the electric valve will shift.

• The LCD text will change from “AUTO” to “AUTO ON” and the

LCD backlight will begin fl ashing on and off. This indicates that
Automode is now controlling pump operation automatically as
required to maintain the set pressure range.

WARNING: All personnel must be aware that motor can
start and/or valve can shift at any time when backlight
is fl ashing and “AUTO ON” is displayed on the LCD.

WARNING: Always set Automode to OFF and
disconnect electrical power to pump before
disconnecting hoses or performing any
adjustments, maintenance or repairs.

III. When system pressure drops to the LO PRESS value:

• Pump types 1 and 8: The pump motor will restart.

• Pump types 6 and 10: The electric valve will shift.

• Pump type 2: The pump motor will restart and the electric
valve will shift.

4.1 B. If Automode is ON, and LO PRESS setting is set

to zero (0) or OFF (Pump types 1, 2, 3, 6, 8 and 10)

Note: On pump type 3 only, the LO PRESS function is not used,

and is automatically set to zero (0) by the microcontroller.

I. Before the HI PRESS value is reached:

• The pendant buttons and shroud On/Off button will function

as described in sections 3.1 – 3.4.

• The text “AUTO” will be shown on the LCD, reminding the

operator that Automode is active, and that the pump will take
control when system pressure rises to the HI PRESS value.

II. After the HI PRESS value is reached:

• Pump types 1, 2, 3 and 8: The pump motor will stop and the
electric valve will shift.

• Pump types 6 and 10: The pump motor will keep running and
the electric valve will shift.

• The LCD will continue to display “AUTO” and the LCD backlight
will remain turned on (will not fl ash on and off).

4.1 C. If Automode is OFF

(Pump types 1, 2, 3, 6, 8 and 10)

• The LCD will display “READY” in the text area.

• The LCD will indicate system pressure as a simple pressure

gauge, no additional actions will be performed regardless of
previously set HI PRESS and LO PRESS values.

4.1 D. Additional Information

• Pressing and releasing any button on the pendant (if equipped)

or shroud will stop the automatic cycle. Pressing the pendant
Down-Arrow (if applicable) will also retract the cylinder. Pressing
the motor On/Off button will also de-energize the motor if it is
running.

• To restart the automatic cycle, press and release the pendant

Up-Arrow button (if applicable) or the motor On/Off button (See
section 3.1– 3.4).

• Refer to sections 6.1 through 6.5 later in this document for

and detailed LCD operating instructions and descriptions of the
Automode LCD screens.

3

5.0 RELIEF VALVE ADJUSTMENT

Z-Class pumps are equipped with one user adjustable relief valve
(see Figure 5.)

IMPORTANT: To ensure proper pump operation:

• On pumps equipped with the optional pressure transducer, the
relief valve must be set at least 200 psi [13.7 bar] above the HI
PRESS value.

• On pumps equipped with the optional pressure switch (see
section 7.0), the relief valve must be set at least 200 psi [13.7 bar]
above the pressure switch setting.

To adjust the relief valve pressure setting:

1. Install a gauge on the pump.

2. If the pump is equipped with the optional pressure transducer,
verify AUTOMODE is off (See section 6.5C for additional
details).

3. Start the pump to allow the oil to warm.

4. Loosen the set screw locking nut.

5. Shift the control valve and build pressure in the system. Using
an Allen wrench, turn the set screw counter-clockwise to
decrease pressure and clockwise to increase pressure.

Note: To obtain an accurate setting, decrease the pressure
to a point below the fi nal setting and then slowly increase the
pressure until it reaches the fi nal setting.

6. Tighten the locking nut when the desired pressure is set.

7. Shift the control valve to the neutral position, allowing the
system pressure to return to 0 psi.

8. Recheck the fi nal pressure setting by shifting the control valve
and pressurizing the system.

Relief valve body
(DO NOT TURN)

Text Display

Numeric
Display

6.2 Boot Sequence

When the pump is connected to electrical power, the LCD screen
will show: “FIRMWARE 7.x” for 1 second, then “Model XX” for

0.5 seconds. Following these messages, “Motor UN”, “Motor
1P” or “Motor 3P” will appear for 0.5 seconds. This information
may be useful if the pump ever requires servicing or repairs.
Additional information may appear, depending on pump model
and installed accessories.

The boot sequence is successfully completed when the text
display on the LCD screen shows “READY” (sequence takes
approximately 3 seconds). On pumps equipped with the pressure
transducer option, the current system pressure (typically “0” if
motor is not running) will also appear on the numeric display.

SET

00000000

0000.0

HOURS CYCLES

LOW MOTOR
VOLTAGE OVERLOAD

Figure 6, LCD Control Panel

PSI MPa
BAR

6.3 LCD Operation Buttons

The LCD control panel is equipped with four button switches:

Set Screw

Locknut

Figure 5, Relief Valve

6.0 LCD ELECTRONIC CONTROLS

6.1 LCD Control Panel Overview

The LCD control panel serves as an interface between the
operator and the pump. By using the LCD control panel's four­button switches, and the additional button switches located on
the pendant, all functions and settings described in sections 6.3
through 6.6 of this document can be activated.

In the event of an abnormal condition, the LCD also displays
fault codes and warning alerts as described in sections 6.7 and

6.8.

CAUTION: Make sure that the plastic overlay that
protects the LCD screen and the button switches is

not broken or otherwise damaged. Never punch the
button switches with a sharp or pointed instrument, use fi ngertips
only. Clean the overlay regularly with a damp cloth. Never use
aggressive or abrasive detergents.

On/Off / Menu / Down Arrow / Up Arrow

• Pressing the MOTOR on/off button shuts-off the motor during
normal operation. The motor OFF function is available on this
button even if the pump is being operated by the pendant.
However, the MOTOR on/off button will not turn the motor
ON except if the LCD is in Local mode (See section 6.5 K).

• Pressing the MENU button enables the operator to step from
normal operational mode into a series of menus. Repeated
pressing allows the operator to step through all available
menus. Pressing the Menu button also saves any changes
made. To return to the normal operational mode, press and
hold the Menu button for three seconds or do not push any
button for 60 seconds.

• The Down Arrow and Up Arrow buttons serve two purposes.
For most LCD menus, the Down Arrow and Up Arrow buttons
are used to step through the menu options. Also, when the
pump is placed in Local mode, pressing the Up Arrow button
switches the valve solenoid on and off (the pendant is non­operational in Local mode).

4

6.4 LCD Menu Overview

The LCD contains the following available menus:

• Normal Operation – Default start-up screen. Appears
immediately after power is connected and microcontroller
has booted.

Note: The Units, Automode, Hi Press and Lo Press menus are
available only on pumps equipped with a pressure transducer
(optional equipment)

• Units – Sets the pressure units to PSI / BAR / MPa. PSI is the

default setting.

• Automode – Switches the Automode function ON or OFF.

• Hi Press – (Available only when Automode is ON) Sets the high

pressure limit at which pump de-energizes motor / electric
valve.

• Lo Press – (Available only when Automode is ON - Not used

on pump type 3) Sets the low pressure limit at which pump
energizes motor / electric valve.

• Main – Displays pump status after the desired pump

operational parameters have been input by the user and
saved in the microcontroller memory.

• Motor – Displays the motor hour meter and on/off cycle

counter (non-resettable).

• Low Volt – Displays the low voltage hour meter

(non-resettable).

• Advance – Displays the solenoid hour meter and on/off cycle

counter for the advance solenoid (non-resettable).

• Retract – Displays the solenoid hour meter and on/off cycle-

counter for the retract solenoid (non-resettable).

• Local – Switches the pump Local mode ON or OFF.

• Language – Sets the language of the display to English,

Spanish, French, Italian, German or Portuguese, with English
being the default setting.

• Diagnose – Displays input signals from the pendant and other

electrical accessories.

6.5 LCD Menus

See the following paragraphs for descriptions of the LCD menus.
Also refer to Table 2, Quick Reference Chart (QRC), located at the
end of this document.

6.5 A Normal Operation Menu

(See Screen 1) LCD screen “READY”
indicates that the microcontroller has
booted successfully.

For pumps equipped with a pressure
transducer, the pressure reading will
be displayed as “0” when pump is
fi rst connected to power and motor is
off. Enter into the remaining menus by
pressing the Menu button. Refer to QRC step #1.

6.5 B “Units” Menu

(See Screen 2) This screen allows the
operator to set the unit of pressure
measurement by pressing the Up or
Down Arrow buttons. PSI, BAR and
Mpa are the available choices, with
PSI being the default. Save setting
and step forward by pressing the
Menu button. Refer to QRC step #2.

Screen 1

READY

PSI

0

Screen 2

SET

PSI MPa

UNITS

BAR

6.5 C “Automode” Menu

(See Screen 3) This screen allows the
operator to activate or de-activate
automatic operation of the pump
motor and electric valve (if equipped).

Toggle Automode ON or OFF by
pressing either the Up or Down Arrow
button. Save setting and step forward
by pressing the Menu button. Refer to QRC step #3A.

Notes:

• The UNITS and AUTOMODE menus are available only on
pumps equipped with the pressure transducer option. These
menus will not appear on pumps not equipped with a pressure
transducer.

• When Automode is on, the pump will de-energize the motor
/ electric valve when the hydraulic pressure reaches operator
defi ned levels. This parameter is set using the Automode “HI
PRESS” menu.

• The pump can be set to re-energize the motor / electric valve
when the hydraulic pressure falls to an operator defi ned level.
This parameter is set using the Automode “LO PRESS” menu.
Note: the LO PRESS menu is not functional for pump type 3.

• The specifi c operation of the motor and electric valve while
Automode is activated is determined by the pump type (factory
set). For additional information, refer to Table 4, Pump Model
Matrix, located at the end of this document. Also refer to sections

4.0 and 4.1 for an overview of Automode operation.

• If Automode is OFF: The HI PRESS and LO PRESS menus will
not be available, and any previously set HI or LO PRESS values
will have no effect on pump operation.

Screen 3

SET

AUTOMODE

ON

6.5 D “HI PRESS” Menu
(Available only when Automode is ON)

(See Screen 4) This screen allows the
operator to set the high-pressure limit
at which the pump de-energizes the
motor / electric valve. Make changes
in increments of 50 psi [3.5 bar] by
pressing either Down or Up Arrow
button once. Press and hold either
button to scroll quickly through the
available settings. Maximum pressure value is 10,500 psi [724
bar]. Save setting and step forward to the Main menu (See
section 6.5 F) by pressing the Menu button for 3 seconds. Refer
to QRC step #3B.

Note: If the menu button is pressed for less than 3 seconds, the
selected HI PRESS value will be saved and the LO PRESS menu
(See section 6.5 E) will appear.

CAUTION: Due to motor coast down, valve shift time
and system oil capacitance, always set the user-

adjustable relief valve 200 psi above the HI PRESS
value to prevent pressure spikes. Refer to pump instruction
sheet for relief valve setting instructions.

Screen 4

SET

HI PRESS

7500

PSI

5

6.5 E “LO PRESS” Menu (Available only when
Automode is ON - All except pump type 3)

(See Screen 5) This screen allows
the operator to set the low-pressure
limit at which the pump energizes the
motor / electric valve. Make changes
in increments of 50 psi [3.5 bar] by
pressing either Down or Up Arrow
button once. Press and hold either
button to scroll quickly through the
available settings. Default pressure value is OFF (or “0” on some
pump models). Save setting and step forward to the Main menu
(See section 6.5 F) by pressing the Menu button for 3 seconds.
Refer to QRC step #3C.

Note: If the menu button is pressed for less than 3 seconds, the
selected LO PRESS setting will be saved. However, the Motor
menu (See section 6.5 G) will appear instead of the Main menu.

CAUTION: The LO PRESS value should be set at least
400 PSI below the HI PRESS value to prevent excessive

pump cycling. Use appropriate valving in the hydraulic
circuit to ensure that the pump does not cycle on and off more
than three times per minute. For circuits equipped with sequence
valves, the LO PRESS setting should be at least as high as the
fi rst stage sequence valve pressure.

6.5 F Main Menu

(See Screen 6A) When Automode is
fi rst turned on, the screen will display
“AUTO”.

(See Screen 6B) During pump
operation, and after Automode has
taken control of the pump, the text will
change from “AUTO” to “AUTO ON”.

All except pump type 3: If a LO
PRESS value has been entered, the
pump backlight will begin to fl ash on
and off. This fl ashing will continue
until system pressure drops to the LO
PRESS value.

Note: Details of Automode operation
will vary, depending on pump type and
model. Refer to sections 4.0 and 4.1
for additional information. Also refer to
the pump model matrix in Table 4 near
the end of this document.

(See Screen 6C) If Automode is OFF, the
screen will display “READY” instead of
“AUTO”, and the system pressure will
appear on the numeric display.

Note: For pumps NOT equipped with
a pressure transducer, the screen will
display “READY” and no pressure will
be indicated. The “AUTO” and “AUTO
ON” screens will not be available.

6.5 G “Motor” Menu

(See Screen 7) This screen allows the
operator to read the number of hours
or on/off cycles the motor has been
operated. Toggle between hours and
cycles by pushing either the Down
or Up Arrow button. Step forward by
pressing the Menu button. Refer to
QRC step #5.

Screen 5

SET

LO PRESS

OFF

Screen 6A

AUTO

0

Screen 6B

AUTO ON

0

Screen 6C

READY

0

Screen 7

MOTOR

4.8

HOURS CYCLES

PSI

PSI

PSI

__________________________________________________________

General note for all hour and cycle displays:

HOURS DISPLAYED

- up to 9999.9 the display will show decimal hours.

- between 10,000 - 99,999 whole hours will be
displayed (decimal “.” is not displayed).

- over 99,999 hours the meter starts over at 0.0 reading
decimal hours.

CYCLES DISPLAYED

- over 99,999 cycles the meter starts over at 0.

__________________________________________________________

6.5 H “Low Volt” Menu

(See Screen 8) This screen allows the
operator to read the number of hours
the pump has been operated in a low­voltage condition. Step forward by
pressing the Menu button. Refer to
QRC step #6.

6.5 I “Advance” Menu

(See Screen 9) This screen allows the
operator to read the total number of
hours that the advance valve solenoid
has been operated. It also displays
the total number of advance solenoid
cycles. Toggle between hours and
cycles by pushing either the Down or
Up Arrow buttons. Step forward by
pressing the Menu button. Refer to
QRC step #7.

6.5 J “Retract” Menu

(See Screen 10) This screen allows
the operator to read the total number
of hours that the retract solenoid has
been operated. It also displays the
total number of retract solenoid cycles.
Toggle between hours and cycles by
pushing either the Down or Up Arrow
buttons. Step forward by pressing the
Menu button. Refer to QRC step #8.

6.5 K “Local” Menu

(See Screen 11) This screen allows the
operator to toggle the Local mode ON
or OFF (default is OFF). Local mode
allows operation of the pump if the
pendant or pendant cord is damaged.
With Local mode ON, the shroud
buttons replace the pendant buttons
as the method of operating the pump,
and the pendant buttons become deactivated. Toggle Local
mode ON or OFF by pressing the Down or Up Arrow button.
When Local mode is ON, the text “LOCAL” replaces “READY” on
the “Normal Operation” menu. Save setting and step forward by
pressing the Menu button. Refer to QRC step #9.

6

Screen 8

LOW VOLT

.0

HOURS

Screen 9

ADVANCE

188

HOURS CYCLES

Screen 10

RETRACT

334

HOURS CYCLES

Screen 11

SET

LOCAL

OFF

6.5 L “Language” Menu

(See Screen 12) This screen allows
the operator to change the LCD display
language. When a language is shown on
the LCD, press the Down or Up Arrow
buttons to select a different language. Save
setting and step forward by pressing the
Menu button. Refer to QRC step #10.

6.5 M “Diagnose” Menu

(See Screen 13) This screen allows
the operator to troubleshoot various
pendant problems. If the number “1”
does not appear when a pendant button
is pushed, problems with the pendant
button switches and/or pendant cord
may be present (See Screens 14, 15 and

16). Use Local mode to operate pump
until problem can be corrected. Refer to
QRC step #11.

Pendant on/off button
Pendant advance button
Pendant retract button
(not used)
(not used)

Diagnose screen
with pendant
on/off button
pushed.

Press

Screen 12

SET

ENGLISH

Screen 13

DIAGNOSE

PSI MPa

PSI MPa
BAR Nm
Ft-lb

BAR Nm
Ft-lb

00001

Screen 14

DIAGNOSE

01001

6.6 LCD Hidden Menus

6.6 A “Calibration” Menu

(See Screen 17) This screen allows the
operator to adjust the pressure value
shown on the LCD to match a master
gauge.

To access this menu, go to the “UNITS”
menu.

Then, press and hold the shroud
Motor on/off button in for 7 seconds. ENTRY CODE will appear.
Then, press and hold both the Down Arrow and Up Arrow button
for 7 seconds. See Table 3, “Z-Class Pressure Transducer
Calibration” for adjustment steps.

Screen 17

SET

CAL PT A

0

PSI

6.7 LCD Fault Conditions

Any fault condition will shut down the pump and prevent it from
starting.

6.7 A Clearing a Fault Condition from the LCD

After the fault causing problem has been corrected, clear the fault
message from the LCD by disconnecting electrical power from
the pump. Wait until all characters clear the LCD (~ 10 seconds),
then reconnect power.

6.7 B Power Failure

Display: “POWER OFF”

(See Screen 18) The Power Off fault is

displayed when the main power supply
drops to 65% or less of nominal voltage.
The pump will automatically shut-off
the valve solenoid and the motor, and
display “Power Off” on the LCD. Note:
Power Off is also displayed for several
seconds after the unit is disconnected
from electrical power.

Screen 18

POWER

OFF

Diagnose screen
with pendant
advance button

.

pushed

Diagnose screen
with pendant
retract button

.

pushed

Press

Press

Screen 15

DIAGNOSE

10001

Screen 16

DIAGNOSE

00101

PSI MPa
BAR Nm
Ft-lb

PSI MPa
BAR Nm
Ft-lb

6.7 C Button Fault

Display: “BUTTON FAULT”

(See Screen 19) The Button Fault
message is displayed when the
microcontroller detects that any button
is pressed during the boot sequence
or if the shroud Motor on/off button is
pressed for more than 3 seconds.

Screen 19

BUTTON

FAULT

6.7 D Motor Overload

Display: “MTR OVLD” and

“Motor Overload”

(See Screen 20) The Motor Overload
fault is displayed when the electric
current draw exceeds the pre-set limit
of the pump’s internal circuit breaker.
The circuit breaker will automatically
reset in about 2 to 3 minutes after the
condition has been corrected. However,
before the pump can be restarted, the
operator must clear the fault by disconnecting and reconnecting
electrical power as described in section 5.7 A.

Screen 20

MTR OVLD

MOTOR
OVERLOAD

7

6.7 E Oil Level
(requires optional fl oat / temperature switch)

Display: “OIL LEVEL”

(See Screen 21) The Oil Level fault is
displayed when the oil level inside the
reservoir drops below 1.3" (34 mm)
from bottom.

Screen 21

OIL LEVEL

6.8 LCD Warning Conditions

LCD Warnings notify the operator of abnormal operating
conditions, but allow the pump to continue operating. Warnings
will automatically clear once the abnormal condition has been
resolved.

6.8 A Low Voltage Warning

Display: “LOW VOLT” and “Low Voltage”

6.7 F Oil Temperature
(requires optional fl oat/temperature switch)

Display: “OIL TEMP”

(See Screen 22) The Oil Temperature
fault is displayed when the temperature
of the oil inside the reservoir exceeds
175 ºF [80 °C].

Screen 22

OIL TEMP

6.7 G Oil Pressure
(requires optional pressure switch)

Display: “P SWITCH OPEN”

(Screen 23) The “P SWITCH OPEN”
fault is displayed when the high pressure
limit is reached and the pressure switch
opens.

Screen 23

P SWITCH

OPEN

(See Screen 23) A “Low Voltage”
condition is defi ned as an operating
condition when the main power supply
is at or below 80% of nominal voltage.
While running the pump under this
condition, the “Low Voltage” signal will
fl ash on the LCD and the Low Voltage
hours will be counted and stored by the
microcontroller. Normal pump operation
is still permitted.

IMPORTANT: Pump operation during a Low Voltage condition
is not recommended. Motor RPM and hydraulic fl ow will be
reduced. The pump's internal circuit breaker may trip due to high
current draw, resulting in a Motor Overload fault (see section

6.7 D).

Screen 24

LOW VOLT

LOW
VOLTAGE

Pressure Switch Notes:

• The pressure switch does not provide real time pressure data
to the LCD. For this reason, no pressure indication will be shown
on the “READY” screen unless a pressure transducer is also
installed.

• Factory installed pressure switches are typically installed in the
valve manifold “GA” port. However, if desired, the pressure switch
can be installed in the valve manifold “GB” or “GP” ports.

“GA” measures “A” port pressure.

“GB” measures “B” port pressure (if applicable).

“GP” measures pump pressure before the control valve.

8

(Continued on next page)

Units Comments

digital display

Start calibration process.

PSI, BAR or MPa. Default is PSI.

Firmware version 7.x, pump type (1, 2, 3, 6, 8 or 10)

and motor type (UN, IP or 3P) will briefl y appear on LCD.

or MPa

Save previous setting and step forward to select units,

“READY” appears after power on and boot sequence has completed.

PSI, BAR or MPa. Default is PSI.

Toggle between “ON” and “OFF” using the Arrow buttons.

See Table 2, calibration reference chart for further instructions.

or MPa

Note: To step to #5 Motor screen, turn Automode OFF

If Automode is ON.

and press Menu button.

default value is 10,500 psi [724 bar].

Set maximum pressure (upper Automode limit),

Note: Pressure not adjustable when Automode is OFF.

or MPa

PSI, BAR

If Automode is ON.

default value is OFF.

hold down button for 4 sec. minimum.

hold down button for 4 sec. minimum.

Set minimum pressure (lower Automode limit),

" Only if pressure transducer is detected,

" Only if pressure transducer is detected,

or MPa

PSI, BAR

hold down button for 4 sec. minimum.

Note: Pressure not adjustable when Automode is OFF.

" Only if pressure transducer is detected,

hold down button for 4 sec. minimum.

" Only if pressure transducer is detected,

Expected reading / symbol / status

Display

Table 2, QRC: Quick Reference Chart • Pump Firmware Version 7.x • Pump Types 1, 2, 3, 6, 8 and 10

Step Switch Text

1 READY 0 PSI, BAR,

2A X SET UNITS PSI

X" BAR

X" MPa

X Save and step to #3 by pressing Menu button.

CAL PT A 0 PSI, BAR,

X X " Hold for 7 Seconds

2B X SET UNITS Hold for 7 Seconds Save previous setting and step forward to select units,

XXXXX (PSI, BAR or MPa)

Then up 50 psi [4 bar] every 0.05 sec.

Then down 50 psi [4 bar] every 0.05 sec.

HI PRESS

X " Up 50 psi [4 bar] per 0.5 sec. for fi rst 3 sec.

XON

X Save and step to #3B by pressing Menu button.

3A X AUTOMODE OFF

9

3B SET

X " Down 50 psi [4 bar] per 0.5 sec. for fi rst 3 sec.

X Save and step to #3C by pressing Menu button.

3C SET

XXXXX (PSI, BAR or MPa)

Then up 50 psi [4 bar] every 0.05 sec.

Then down 50 psi [4 bar] every 0.05 sec.

LO PRESS

X " Up 50 psi [4 bar] per 0.5 sec. for fi rst 3 sec.

X " Down 50 psi [4 bar] per 0.5 sec. for fi rst 3 sec.

X Save and step to #5 by pressing Menu button.

Text Display:

Units Comments

digital display

“AUTO” if Automode ON

“READY” if Automode OFF

Select hour meter function (motor).

Select cycle counter function (motor).

Numeric display will show “0” when system pressure is zero.

or MPa

PSI, BAR

0 PSI

0 BAR

0 MPa

Select “LOCAL” mode.

Toggle between “ON” and “OFF”.

Pressure or torque units will appear,

indicating that pressure transducer is connected.

When pendant buttons are pushed, the digital display

is expected to show processor inputs that are “turned on”.

MPa,

10001 With pendant On/Off button pushed.

01001 With pendant ADVANCE button pushed.

00101 With pendant RETRACT button pushed.

Expected reading / symbol / status

Display

Table 2, QRC: Quick Reference Chart • Pump Firmware Version 7.x • Pump Types 1, 2, 3, 6, 8 and 10

(Continued from previous page)

Step Switch Text

or

4 AUTO

READY

X " Number of cycles. CYCLES Select cycle counter function (solenoid advance).

X " Number of cycles. CYCLES Select cycle counter function (solenoid retract).

X" ON

X " Number of cycles. CYCLES

6 X LOW VOLT Number of hours at low voltage, displayed as 0.0. HOURS Select hour meter function (low voltage condition).

7 X ADVANCE Number of hours, displayed as 0.0. HOURS Select hour meter function (solenoid advance).

5 X MOTOR Number of hours 0.0. HOURS

8 X RETRACT Number of hours, displayed as 0.0. HOURS Select hour meter function (solenoid retract).

X " OFF

9 X LOCAL OFF

X ESPANOL

X FRANCAIS

X ITALIANO

X DEUTSCH

X PORTUGUES

X ENGLISH Save and step to #11 with Menu button.

10 X ENGLISH Select language, default is English.

10

11 X DIAGNOSE 00001 PSI, BAR, or

12 X - - - Hold for 3 seconds to return to step 4.

Comments

LCD Reading

Boot sequence.

psi is the current unit of pressure measurement.

0 psi

psi

FIRMWARE 7.x,

then “READY”

UNITS

Table 3 , Z-Class Pressure Transducer Calibration, Firmware 7.x • Pump Types 1, 2, 3, 6, 8 and 10

Step into the hidden calibration mode.

Start of calibration process. The advance-solenoid will be powered up to access the pressure transducer

CODE

O psi

ENTRY

CAL PT A

through valve-port A.

[O bar]

Calibrate the zero-offset, point “A”.

O psi

[O bar]noyes

CAL PT A

SAVE A

Confi rm the pressure data should be stored to memory.

SAVE A

Calibrating gain is done with two points, starting with point “B”.

5000 psi

[345 bar]

CAL PT B

First obtain the pressure value on the master gauge (ie 5000 psi). Then use the arrow buttons to match the

LCD value to the master gauge.

5000 psi

[345 bar]noyes

CAL PT B

SAVE B

Confi rm the pressure data should be stored to memory.

SAVE B

Calibrating gain is done with two points, fi nishing with point “C”.

8000 psi

[548 bar]

CAL PT C

First obtain the pressure value on the master gauge (ie 8000 psi). Then use the arrow buttons to match the

LCD value to the master gauge.

8000 psi

[548 bar]noyes

CAL PT C

SAVE C

Confi rm the pressure data should be stored to memory.

SAVE C

Re-confi rm calibration data. Leave “off” to proceed with new calibration data. Only set to “on” to change

off

USE DFLT

calibration data back to factory default settings. Press Arrow button to change.

Save calibration data to permanent memory.

Calibration complete, motor stops and electric valve releases pressure.

O psi

[O bar]

O psi

CAL PT A

READY

[O bar]

Operator action

No.

Connect a master gauge to port A (Advance port)

1

Connect electrical power to pump.

At main screen, press the Menu button once to display “UNITS” screen.

2

3

Press and hold the ON/OFF button for seven seconds.

Press and hold the Arrow-up and Arrow-down buttons together for seven seconds.

Open the pump’s user-adjustable relief valve and verify both pump LCD and master

gauge read zero.

Press the Menu button to accept the pressure value into temporary memory.

Press one Arrow button to change from “no” to “yes”.

Press the Menu button once.

Press and release the shroud’s ON/OFF motor-button to switch the pump motor on.

Reading the master gauge, apply a pressure of 5000 psi by closing the pump’s user-

4

5

6

7

8

9

10

adjustable relief valve.

Press the Menu button to accept the pressure value into temporary memory.

Press one Arrow button to change from “no” to “yes”.

11

12

11

Press the Menu button once.

Reading the master gauge, apply a pressure of 8000 psi.

Press the Menu button to accept the pressure value into temporary memory.

Press one Arrow button to change from “no” to “yes”.

13

14

15

16

Press the Menu button once.

Press the Menu button once.

Press and hold the Menu button for three seconds to step out of the calibration mode.

17

18

19

Additional comments

3 button pendant used but only Up and Down

Arrow buttons are active

up-arrow now on the middle button-position,

using pin #2 of pendant

Pump type 6 is the default factory setting. 0

means LO_PRES is turned off. Default

manufacturer setting is AUTO MODE off &

LO_PRESS is 0

safety feature: Arrow-up and arrow-down

buttons switch off motor when pump is running

on toggle-on

(Continued on next page)

turned off.

On/Off

value. 0 means LO_PRESS is

50 psi less than HI_PRESS current

on

10,500 psi

off

on/off

toggle

na -

no pendant

50 psi less than HI_PRESS current

on

10,500 psi

off

off

(advance)

momentary on

Max value for LO_PRESS

value is reached

Action when LO_PRESS

Operation with Automode ON

Max value

for HI_PRESS

Pumps Equipped with Pressure Transducer Option Only

Action when HI_PRESS

value is reached

LCD Panel

Button

Motor

Arrow up

na - can not change

LO_PRESS value from off

off

off

(advance)

momentary on

na

na

10,500 psi

only the valve shuts off,

when HI_PRESS is reached

on/off

toggle

no change

50 psi less than HI_PRESS current

on

off

motor continues running

off

momentary on

turned off.

value. 0 means LO_PRESS is

na

off

off

na - disabled

value from off

na - can not change LO_PRESS

na - can not change

LO_PRESS value from off

10,500 psi

off

off

(advance)

momentary on

turned off

value. 0 means LO_PRESS is

(advance)

na

turned off.

value. 0 means LO_PRESS is

50 psi less than HI_PRESS current

off

on

10,500 psi

off

off

off

off

toggle

on/off

momentary on

Pendant Button

What happens when _____ button is pushed in

normal operation mode (“READY” is displayed on LCD)

Table 4, Z-Class Pump Model Matrix • Firmware 7.x • Pump Types 1, 2, 3, 6, 8 and 10

down

Arrow

Motor

On/Off

Item

foot

switch

pendant

valve

code

Pump type

type

Pump

Type

Pump

na -

no pendant

no

na -

(if attached)

Motor & Fan

NA

none

any manual

ZxxxxxLx

ZxxxxxHx

w/LCD

manual

1

pendant

na - disabled

na -

disabled

(if attached)

Motor & Fan

Option

3-button

VE32

Zxx2xxSx

Adv /

Hold /

2

Ret

momentary

na -

Solenoid B

on (retract)

na - disabled

na -

disabled

Motor & Fan

Option

1-button

VE32-D

Zxx1xxDx

Dump

3

disabled

(if attached)

12

na - disabled

na -

disabled

Solenoid A

no change

on/off

toggle

(if attached)

Motor & Fan

Option

3-button

VE33 / VE43

Zxx3xxSx

Zxx4xxSx

remote

3/4-way

6

off

no

change

Solenoid A

none

none

ZxxxxxWx

momentary

no

Solenoid B

on (retract)

change

on

momentary

on/off

toggle

(if attached)

Motor & Fan

Option

button

1or2-

any manual

8 Jog ZxxxxxKx

Additional comments

Similar to pump No. 6 execpt that LOCAL MODE

is the default at start-up. Pendant buttons are

disabled.

(See Note 2)

na

Max value for LO_PRESS

na

value is reached

Action when LO_PRESS

Operation with Automode ON

Max value

for HI_PRESS

Pumps Equipped with Pressure Transducer Option Only

reached

(SET_PRESS) value is

Action when HI_PRESS

Button

LCD Panel

Motor

Arrow up

On/Off

10,500 psi

when HI_PRESS is reached

toggle

no change

only the valve shuts off,

on/off

motor continues running

50 psi less than HI_PRESS current

on

off

off

(see note 1)

momentary on

turned off

value. 0 means LO_PRESS is

(advance)

na

off

off

off

off

be on or off

Note: Motor may

Notes - Pump Type 10:

1. if Automode is OFF, motor is momentary on (no toggle).

2. If Automode is OFF, solenoids can be operated manually when motor is off or on.

What happens when _____ button is pushed in

normal operation mode (“READY” is displayed on LCD)

Table 3, Z-Class Pump Model Matrix • Firmware 7.x • Pump Types 1, 2, 3, 6, 8 and 10

Table 4, Z-Class Pump Model Matrix • Firmware 7.x • Pump Types 1, 2, 3, 6, 8 and 10

(Continued from previous page)

Pendant Button

down

Arrow

Motor

On/Off

Item

foot

switch

pendant

valve

code

Pump type

type

Pump

Type.

Pump

no change

On

(no toggle)

Momentary

(if attached)

Motor & Fan

Option

3-button

VE33 / VE43

ZxxxxxWx

Manual

Momen-

tary

10

Pump

off

no

Solenoid A

none

none

change

13

momentary

no

Solenoid B

(retract)
on

change

may be

on or off

Note: Motor

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Toll Free in Brazil:

Tel: [phone]
[e-mail]

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Technical Inquiries:

[e-mail]

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[phone] 7529

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Tel: [phone]
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[e-mail]

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User inquiries:

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All Enerpac products are guaranteed against defects in workmanship and materials for as long as you own them.

For your nearest authorized Enerpac Service Center, visit us at www.enerpac.com

062609