Parker eP2 Series User guide

Bulletin MSG30-2901-INST/UK
Installation and setup
manual
Series eP2 / eP3
Electronic Controls
Effective: March 01, 2019
Supersedes: March 01, 2018
Visit our homepage for additional support
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2
Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
Installation and setup manual
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-2901-INST/UK
Contents Page
Installation, Start-up and Setup........................................................................................................ 3
1. Preparation................................................................................................................................. 3
1.1. Model code check ............................................................................................................... 3
1.2. Visual inspection.................................................................................................................. 3
1.3. Rotation check..................................................................................................................... 3
2. Installation .................................................................................................................................. 3
2.1. Drive input ........................................................................................................................... 3
2.2. Connections ........................................................................................................................ 3
2.3. Electrical interfaces, PIN assignment.................................................................................. 5
2.4. Wiring recommendations..................................................................................................... 5
2.5. Power supply – sensors, reference voltage......................................................................... 5
2.6. Sensor properties................................................................................................................ 6
2.7. Valve properties................................................................................................................... 6
2.8. Electrical displacement adjustment ..................................................................................... 6
2.9. eP2 / eP3 control functions ................................................................................................. 7
2.10.Valve function..................................................................................................................... 7
2.11.Typical arrangements eP2.................................................................................................. 8
2.12.Typical arrangement eP3 ................................................................................................... 8
2.13.Fluid reservoir .................................................................................................................... 9
2.14.Hydraulic system safety ..................................................................................................... 9
3. Hydraulic fluid requirements....................................................................................................... 9
3.1. Recommended fluids........................................................................................................... 9
3.2. Cleanliness level.................................................................................................................. 9
3.3. Viscosity .............................................................................................................................. 9
3.4. Compatibility with Sealing Material...................................................................................... 9
4. Start up and Operation............................................................................................................... 9
4.1. Start up Procedure .............................................................................................................. 9
4.2. Temperature ...................................................................................................................... 10
4.3. Inspection and Maintenance ............................................................................................. 10
5. Trouble Shooting ...................................................................................................................... 10
6. Appendix - System Layout with pump control module (PCM).................................................. 11

Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
3
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Installation and setup manual
Bulletin MSG30-2901-INST/UK
Clockwise rotation Counter-clockwise
rotation
Installation, Start-up and Setup
In order to provide for safe and failure-free op-
eration of hydraulic pumps of series P2/P3 it is
mandatory to conduct a careful installation and
start up procedure.
Respective requirements as well as aspects spe-
cific for the electronically controlled pump models
are listed and described within the following instruc-
tions. During installation and start up the following
steps need to be carried out carefully.
1.Preparation
1.1. Model code check
Beside information on pump settings, design series
and manufacturing date the pump’s nameplate also
shows the ordering code of the pump, which needs
to be compared to your order acknowledgement /
shipping papers.
1.2. Visual inspection
Make sure that all components of the shipment
are complete, free of damage as well as outside
contamination. Also please check for a proper pro-
tection against ingression of contaminants.
1.3. Rotation check
Please make sure that the pump‘s rotational direc-
tion fits the requirements of the driving mechanism.
The rotational direction of P2 and P3 piston pumps
always refers to view from shaft end and can be
taken from both the nameplate as well as an arrow
machined into the rear cover.
Contamination is the number one cause for
component failure. Therefore maximum care and
cleanliness are required during all handling of parts
which are in contact with the hydraulic fluid. All
ports of the pump must be covered / plugged until
the connectors and hoses are mounted. Perform
assembly preferably in a dry and dust free room.
Use only suitable tools.
2.Installation
2.1. Drive input
Please strictly follow the instructions of the coupling
/ PTO supplier regarding axial clearance, axial
alignment and angular tolerances. The drive shaft
should only carry torque. Units subject to radial
loads require the installation of an outboard bear-
ing. Axial loads are not permitted.
2.2. Connections
Avoid rigid connection between pump and reser-
voir to prevent excitation of the whole system due
to pump vibrations. Same goes for connections
to frame.
Suction port: Ensure an absolute gas tight con-
nection of the pumps suction port in order to prevent
cavitation and noise. Further on avoid sharp el-
bows, restrictions of inlet diameter and turbulences
at the pump’s inlet. The suction pipe must have
access to clean, cooled and filtered fluid, which is
free of air bubbles. Pipe end is recommended to
be cut under 45°.
Series P2/P3’s maximum operating speed is deter-
mined by actual displacement and inlet pressure.
Detailed values can be taken from the catalogs
MSG30-2800 and MSG30-2900. If the pump is
controlled by a Parker PMDE supplied pump control
module (PCM) and the speed feedback is tied into
the controller, a warning message will be
PMD-Chemnitz
PUMP MAXIMUS
FACTORY SETTINGS
Rot.
cc/rev Pmax
bar
Pset
bar
Des.
Ser.
Speed
RPM
Torque
Nm
cc/rev
Made in Germany
Ordering Code
Technical Data
Pump Settings
Rotation/Serial N°/Design series

4
Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
Installation and setup manual
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-2901-INST/UK
generated and logged in case the measured drive
speed exceeds respective limitations.
Minimum pump inlet pressure under static and
dynamic load (P2, eP2, P3, eP3):
pin,min = 0.8 bar abs.
Maximum pump inlet pressure (P2, eP2):
pin,max = 10 bar abs.
Maximum pump inlet pressure (P3, eP3):
pin,max = 1.5 bar abs.
Pressure port: Select correct pressure rating for
pipe / hose and connectors. Take pressure peaks
into account. Dimension the piping according to
the port size. Prevent excitation of the system by
using flexible port connections. Maximum pressure
ratings must not be exceeded (see MSG30-2800;
MSG30-2900). If the pump is controlled by a Parker
PMDE supplied PCM and the pressure feedback is
tied into the controller, a warning message will be
generated and logged in case the measured pump
pressure exceeds respective limitations.
Drain port: Always use highest possible drain
port of the pump (above pump‘s centerline). Do
not combine drain lines. Use low pressure pipe /
hose, as short as possible and full cross section
according to port dimension (see MSG30-2800;
MSG30-2900). Do not use elbows or sharp cor-
ners. To prevent the pump‘s case from emptying
add a bridge higher than pump‘s top to drain line
if required. Drain pipe must end at least 200 mm
below minimum hydraulic tank fluid level. Length
should not exceed 2 m, otherwise use larger pipe
diameter than port size.
Maximum cont. case drain pressure (P2, eP2,
P3, eP3):
pcase,max = 1.5 bar abs.
For reasons of better heat dissipation the drain
ports of P2 can also be used for flushing. Recom-
mended flushing flow is 6 to 10 l/min (P2075),
8-11 l/min (P2145). In case of deadhead operation
exceeding 15 minutes and 100 bar case flushing is
strongly recommended.
Valve connection
Swash angle
sensor
connection
optional Drain port
Pressure gage port /
pressure sensor con-
nection (optional)
Standard
drain port
Standard
drain port Outlet port
Inlet gage
port
Inlet port

Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
5
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Installation and setup manual
Bulletin MSG30-2901-INST/UK
2.3. Electrical interfaces, PIN assignment
Check voltage, current, phase and connection prop-
erties before plugging in any electrical component.
Following mating connectors need to be used to
connect the actuator and sensors properly.
Electrical
component
Connector Mating
Connector
Valve DT04-2P DT06-2S
Swash angle sensor DT04-3P DT06-3S
Pressure Sensor DT04-4P DT06-4S
With correctly installed and mounted mating con-
nector all “DEUTSCH” connectors used meet
protection class IP 67.
PIN assignment - valve:
The terminal assignment of supply and GND is not
important for functionality of the valve.
PIN assignment – swash angle sensor:
PIN assignment – swash angle sensor:
PIN / Terminal Connection
A 5V / VREF+ / Supply – red
B 0V / VREF- / GND – black
C Signal – blue
NOTICE
Do not treat the sensor with electro static
painting.
PIN assignment - pressure sensor:
PIN / Terminal Connection
1 5V / VREF+ / Supply
2 0V / VREF- / GND
3 Signal
4 n.c.
2.4. Wiring recommendations
2.5. Power supply – sensors, reference
voltage
Component Cross
section
Cable
type
Valve
min.
0,75 mm²
(AWG 18) Stranded
wire cable
Swash angle sensor min.
0,5 mm²
(AWG 20)Pressure Sensor
Output voltage 5V ± 150mV
Max. out voltage drift 0,5mV/°C
Recommended load
current 150mA
Recommended
protection
Overload, SCB (Short
to Battery) , SCG
(Short to Ground)
Diagnostic
Over-/ undervoltage
recommended for
error detection
Recommended over-/
undervoltage threshold
±500mV from
nominal value

6
Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
Installation and setup manual
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-2901-INST/UK
2.6. Sensor properties
Swash angle
sensor
Pressure
sensor
Output Ratiometric
Supply
voltage [V] 5V regulated
Supply
current [mA] 12mA Max. 14mA Max.
Over voltage
protection
+14,4V
< 10 Min. +5,5V
Reverse
polarity
protection
-14,4V
< 10 Min. None
Protection
Class IP67 IP67
Signal
working
range
[mV]
standard valve
position:
2500mV-4500mV
Valve on opposite
side of the pump:
2500mV-800mV
500mV-
3700mV
75 cc
pumps
(pmax
cont=
320bar)
Signal @
index position
2500mV
(@ 0% Displace-
ment)
500mV
(@ 0 bar
pressure)
2.7. Valve properties
Supply voltage [V] 12
Current consumption [mA] 2200
Resistance [Ω] 4.4
Recommended dither
frequency [Hz] 120
Recommended dither
amplitude [%] 4
Operating time [%] 100
2.8. Electrical displacement adjustment
All axial piston pumps of series eP2 are equipped
with an adjusted and sealed displacement limiter.
Do not change this setting. Maximum displacement
should be limited electronically.
The factory setting is at 101% of the nominal pump
displacement. Therewith the mechanical displace-
ment limiter is 1% out of the pumps electronic
controlled working range.This prevents the control
from running into boundary issues.
Using a PCM as pump controller, the voltages
for 0% and 101% (shown on the pump tag) can
directly be used for the calibration of the swash
angle feedback sensor. Displacement limitation
below 100% needs to be realized electronically by
controller parameterization.
Using a third party controller the voltage for 101%
needs to be recalculated to 100% by using the
following formulae.
Standard valve position:
Sensor 100% = (Sensor 101% – Sensor 0%)+ Sensor 0%)
1.01
Sensor 100% = Sensor 0%) – (Sensor 0% – Sensor 101%)
1.01
Valve mounted on opposite side of the pump:
NOTICE
An adjustment exceeding the nominal
displacement (Sensor 100%) can destroy the pump.
Sensor 0 %:
Sensor 101 %:
%
Valve Zero Point:
Serial No:
mV
mV
P2-000-3956

Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
7
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Installation and setup manual
Bulletin MSG30-2901-INST/UK
2.9. eP2 / eP3 control functions
The eP2 pump is designed for open circuit, heavy
duty mobile hydraulic systems.
By featuring an electro-proportional directional
valve in combination with a swash angle sensor
it is capable to precisely follow an electrical dis-
placement command and thereby to operate as
a displacement controlled unit. Furthermore the
pump can be equipped with an optional pressure
sensor to either grant for pressure monitoring or to
realize electronic pressure limitation (in combina-
tion with Parker PCM). The PCM is also capable
to manage secondary controls such as variable
torque limitation and speed compensation / flow
control. The inputs can be both analogue based
on mobile voltage signals (0-5 V) or CAN (J1939).
A minimum pressure of 15 bar at the pump outlet is
required to fully de-stroke the pump. Depending on
system requirements the pump might be equipped
with a preload valve to ensure this control condition.
There are different configurations of preload valves
also in combination with main flow pressure reliefs
and main flow logic elements available. Please
consult Parker for further information.
2.10.Valve function
In static displacement control conditions the valve
consumes approx. 53% of its nominal current
(2200 mA).
Due to manufacturing tolerances, this neutral point
and therewith the current engaging this neutral
position can differ from valve to valve. The neces-
sary offset adjustment is stated on the pumps tag
for each individual pump. This “valve zero point”
refers to 2000 mA current.
Example:
Valve Zero point: +1% +20 mA
Valve Zero point -0,5% -10 mA
Depending on the pump’s fail safe control option
(0% or 100%) the valve current is acting differently
to the pumps displacement control.
Below table explains the reaction of the pump’s
displacement control.
0% FS 100% FS
Ivalve > Ineutral
Displacement
increasing
Displacement
decreasing
Ivalve = Ineutral
Displacement
constant
Displacement
constant
Ivalve < Ineutral
Displacement
decreasing
Displacement
increasing
Fail Safe 0% (Standard control position)
Fail Safe 100% (Standard control position)
NOTICE
The hydraulic circuit must be equipped
with a main flow relief valve to secure pump and
hydraulic components. This main flow relief is out-
side the scope of supply.
A
PT
PAT
U
R/V not included
out
Mout
Min
in
ɑ
A
PT
PAT
U
R/V not included
out
Mout
Min
in
ɑ

8
Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
Installation and setup manual
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-2901-INST/UK
2.11.Typical arrangements eP2
(Please consult Parker for deviating approaches)
2.12.Typical arrangement eP3
(Please consult Parker for deviating approaches)
Preferred arrangement for best suction character-
istics and low noise level operation.
Preferred arrangement for best suction character-
istics and low noise level operation.
0.2 m MIN.
0.8 m MAX.
0.2 m MIN.
0.15 m MIN.
0.2 m MIN.
0.8 m MAX.
0.15 m MIN.

Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
9
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Installation and setup manual
Bulletin MSG30-2901-INST/UK
Optional Airbleed Connection. Keep inlet and drain
line separate (hot loop).
2.13.Fluid reservoir
Besides being reservoir for the hydraulic fluid the
tank also supports heat dissipation, air removal,
water removal and contamination sedimentation.
The reservoir needs to be carefully sealed against
ingression of contamination and water. Breather
with filter elements and air dryer shall be used for
protection of tank towards ambient air to avoid in-
troducing dust and dirt particles as well as moisture.
In terms of dimensioning maximum output flow of
the pump(s) needs to be taken into consideration.
2.14.Hydraulic system safety
To ensure human and machine safety under all
operating conditions the installation of a main flow
relief valve is strongly recommended.
NOTICE
A pump compensator/valve is NOT a
safety device.
For eP2/eP3 the installation of an external main
flow relief valve is mandatory to secure both the
pump and the hydraulic system.
3.Hydraulic fluid requirements
3.1. Recommended fluids
Hydraulic fluids based on mineral oils acc. to DIN
51524, part 2 and 3 (HLP / HVLP).
Pumps of series P2/P3 can also be operated with
environmentally acceptable (bio-degradable) and
synthetic hydraulic fluids. Please consult Parker
for further details.
3.2. Cleanliness level
For maximum component life and reliability a
cleanliness level of 18/16/13 (acc. to ISO 4406) is
recommended for eP2/eP3.
3.3. Viscosity
Minimum viscosity for short periods: 10mm²/s (cSt)
Recommended continuous operating viscosity
[15…40] mm²/s (cSt)
Maximum cold start viscosity: 1000 mm²/s (cSt)
3.4. Compatibility with Sealing Material
Please check the specification of selected hydraulic
fluid for chemical resistance with the pumps sealing
material (shaft seal, O-rings).
4.Start up and Operation
4.1. Start up Procedure
Check if all ports are properly connected and free of
damage. All connectors must be tightened. Cross-
check rotational direction and alignment of drive.
Inspect reservoir for cleanliness and a proper
fluid level.
Prior to start up the pump’s case must be filled with
the hydraulic fluid via the (upper) drain port in order
to ensure lubrication, sealing and a smooth start up.
Open the suction valve (if installed).
Switch the system to free circulation / zero pressure
and allow air bleeding to enable the pump to prime.
0.2 m MIN.

10
Axial Piston Pumps
Series eP2 / eP3 – Electronic Controls
Installation and setup manual
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Bulletin MSG30-2901-INST/UK
Start the pump at low speed.
Continue low pressure / low speed operation until
pump and system are properly filled and free of
air bubbles.
Re-check fluid level in tank. Gradually increase
pressure and speed over a timeframe of 5 to 10
minutes. Check if all hoses / pipes and connec-
tions are leak free and tight. Be alert for trouble
as indicated by changes in sound, system shocks
and air in fluid.
If the pump does not build up pressure, double-
check the installation.
4.2. Temperature
Check temperature range of selected seal material
and compare with maximum system and ambi-
ent temperature. The following limitations refer
to average case drain temperature (measured at
drain port), which can be up to 20°C higher than
in the reservoir:
N/D NBR O-rings, FPM shaft seal(s) [-25…+80]°C
B/Q NBR O-rings, NBR shaft seal(s) [-40…+80]°C
V/T FPM O-rings, FPM shaft seal(s) [-25…+80]°C
4.3. Inspection and Maintenance
In general the service life of a piston pump is de-
termined by its bearing lifetime, which is primarily
a function of pressure and drive speed cycle, shaft
load, temperature as well as quality of the hydraulic
fluid. In order to provide for maximum pump life it is
strongly recommended to adhere to the following
inspection routine.
Continuous monitoring:
Operating temperature, noise levels, vibration.
Daily check up:
Oil level and frothing in reservoir, pump leakage.
Monthly check up:
Fixtures.
Yearly:
Oil check (viscosity, contamination, wear).
Check swash angle sensor calibration, recalibrate
if necessary.
5.Trouble Shooting
Component problems and circuit problems are
often interrelated. An improper circuit may oper-
ate with apparent success but will cause failure of
a particular component within it. The component
failure can be the effect, not the cause of the
problem.The following overview on the most typical
issues is offered to provide support in locating and
eliminating the cause of problems. Please consult
Parker for further questions.
Effect:
Noisy Pump / Erosion on barrel and valve plate
Possible cause:
Air in fluid, cavitation (possibly resulting from leak-
ing inlet connection, low fluid level in reservoir,
return lines above fluid level, excessive viscosity of
hydraulic fluid / low temperature operation, exces-
sive shaft speed, insufficient inlet pressure)
Effect:
High wear in pump
Possible cause:
• Excessive loads (operating conditions notac-
cording to pump ratings)
• Fluidcontamination(possiblyresultingfromim-
proper filter maintenance, reservoiropenings)
• Improperuid(excessiveviscositylevels,
breakdown of fluid, incorrect additives)
• Waterinuid(possiblyresultingfromcondensa-
tion, faulty breather / strainer)
Effect:
Excessive Heating
Possible cause:
• Excessive pump leakage (possible causedby
internal damage, fluid viscosity belowrated
minimum)
• Faultyheatexchanger
• Reservoirissues(toolittleuid,heatpickupfrom
surrounding equipment