Liebherr ER 934 C User Manual

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ER 934 CElectric Material Handler

Product Information

Operating Weight: 37,900 - 38,400 kg Operating Weight: 160 kW / 217 HP

ER 934 C

Working radius: 13 - 16 m Motor rating: 160 kW / 217 HP Weight: 37,900 kg - 38,400 kg

ER 934 C Material HandlersER 934 C Material Handlers

Performance

These new electric Material Handlers have been designed to meet the speciﬁc needs of industrial handling. The considerable advantage of the semi-stationary machine is its mobility; a result of the crawler undercarriage. The material-handling machine can be ideally placed in the application area’s existing infrastructure without the necessity for any alterations or rebuilding measures. The performance of the kinematic chain formed from components from our in-house production, combined with the power of the electric motor, maximize the performance of the machine when it comes to lifting power, precision, and speed of operation.

machine, using components from our own manufacture for the electric drive, has been completely rethought, and so moves away from simply being an adaptation of a diesel-engine machine. Being intended for key functions in the organization of industrial sites, Liebherr electric Material Handlers provide a very high level of reliability. The service life of the hydraulic components has also been increased, thanks to the smoother movement of the electric drive. The concept of the single actuator (one single electric motor for all the hydraulic functions) allows for the risk area associated with the low voltage at the electric cabinet to be reduced even further.

Reliability

Backed by more than 30 years experience in the construction of electric excavators, Liebherr designed the new ER 934 C with the aim of providing top performance whatever the challenge might be. The structure of the

Comfort

Helping the operator to concentrate on his work and get the best out of his machine is achieved by providing a comfortable driving position, good visibility, and a highly ergonomic layout of the controls. The new electric Material Handlers offer the same level of comfort as on the mobile excavators (arrangement of the controls, driver’s seat, climate control, large window areas, etc.). The electric motor system adds a further layer of comfort thanks to the low noise emissions and absence of vibration. For Liebherr, comfort also means ease of daily maintenance of the machine in terms of access to the service and inspection points, so as to minimize downtime.

Economy

Investing in the acquisition of an electric Material Handler is a great long-term advantage. Constant increases in the costs of conventional energy sources are pushing up operating charges, and reducing proﬁt margins considerably. Environmental criteria, in particular CO2 emissions, are also playing a constantly greater part in the choice of power systems and working methods. With the electric drive, Liebherr offers an economical alternative to conventional diesel-engine machines, and a solution with real respect for the environment.

ER 934 C Material HandlersER 934 C Material Handlers

ER 934 C – an Overview

Hydraulic Cab Elevation

for an excellent view of the working area and fatiguefree working (optional)

Wide range of solutions

• Modular arrangement for

rapid changeover

• Liebherr quick-coupling

system, mechanical and hydraulic, for efﬁcient equipment changeover

• Quick-coupling arrangement for hydraulic lines (Multi-Coupler)

• Complete range of grapples

• Range of different wood

grapples and grab buckets from Liebherr

Reliability - Safety

• Automatic Power cut off if the cabinet doors are opened

• Automatic power cut off in the event of any anomalies (electric motor or its bearings overheating)

• Active safety on thetransformers in the electric cabinet

Electric enclosure

• Zero Grams emission of CO

• High yields

• Reduced costs

• Environmentally friendly

Cable

•

Power supply through multicore wiring Cable entrance (funnel-shaped) especially designed for travelling machines

•

Cable side routing enables the machine to travel within a short radius (up to 25-30 m distances)

•

Heavy duty connecting box ﬁtted on the middle piece of the undercarriage with switching system

•

For longer distances a cable reel can be proposed as an option

ER 934 C Material HandlersER 934 C Material Handlers

Kinematic chain made by Liebherr

• Constant provision of power for the kinematic chain

• Reduced wear of hydraulic components

• Optimum exploitation of the hydraulic power potential of the system

Cooling system

• Generous dimensions for high

cooling capacity

• Vertical arrangement for

increased efﬁciency and minimal incursion of foreign bodies

• Powered by a thermostatically

regulated hydraulic motor

• Reversible actuation of the fan

(without time limit) as option

Distributor

• Fine response of hydraulic control for maximum working precision

• Immediate response to operator`s commands

• Three-pump hydraulic system, one of which is a closed circuit dedicated to the slewing of the Material Handlers

Electric motor

• Especially designed for tough applications.

• The dimensions of the motor allow for the full power to be drawn from the kinematic chain

• Maximium performance of the machine

Low noise emissions

• Really quiet in operation.

• Measured acoustic level is from

4 to 5 dB lower than an equivalent diesel-engine version.

• Level of noise intensity from a

Liebherr electric excavator represents less than a third of the noise generated by a diesel-engine unit

Protected electric cabinet

• Provides IP55 class protection

• Double ﬁ ltration system

(accessible from the outside) places the cabinet under pressure, which avoids any dust penetration

ER 934 C Material HandlersER 934 C Material Handlers

Technical DataTechnical DataTechnical Data

Technical Data

Electric Motor

��

Motor

Power rating (as per CEI 34-1) Rated voltage Number of poles Design type

Standard degree of protection Insulation

Starter star/delta Heat protection for windings Heat protection for bearings Anti-condensation heating system resistors

��

asynchronous three-phase, cage rotor enclosed

in cast iron envelope, special Liebherr design

160 kW (217 HP) at 1,489 RPM

400 V – 50 Hz *

4 horizontal axle B35

axle height 315 mm painting: RAL 7031

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IP55 – steel flange FF600

class F, thermal loading: Class B,

ambient temperature 40 °C

Electric System

The 400 V electrical cabinet provides a degree of protection to IP55.

This houses the following components:

– Main motorised isolator, controlled from the cab – Star/delta starter for motor – Outlets for supplying auxiliary elements: heating, climate control – Various heat protection devices – Resistors for controlling the temperature of the cabinet – Booster pump integrated in the cabinet: cabinet air filtered (option) – Transformers – rectifier for 24 V control circuit – Motor protection attachment – Auxiliary batteries: 2 x 135 Ah/12 V: secured functions: lighting for excavator/

attachment position (option)

Swing Drive

��

Drive by

Transmission Swing ring

Swing speed Swing torque Holding brake Option

��

Operator’s Cab

��

Cab

Operator’s seat

Controls Monitoring

Climate control

��

hydraulic swash plate motor with integrated

brake valves Liebherr compact planetary reduction gear Liebherr, sealed single race ball bearing swing

ring, internal teeth

0 – 9.4 RPM, stepless

81 kNm oil-bath disk brake (negative action) pedal controlled positioning brake

single shell concept with shaped profiles, resil-

iently mounted, sound insulated, tinted windows.

Front window can be folded away under roof,

door with sliding window shock absorbing suspension, adjustable to

operator’s weight, 6-way adjustable seat integrated into adjustable seat consoles menu driven digital display of current operating

conditions. Automatic monitoring, display, warn-

ing (audible and visual signal) and saving of

machine malfunction data, such as overheating

of windings, motor bearings, or low hydraulic oil

level

standard climate control system, combined

cooler/heater, additional dust filter in the outside/

fresh air circuit

Hydraulic System

Hydraulic pumps for the attachment and travel drive

Max. flow Max. pressure Pump regulation

Hydraulic pump for the swing drive Max. flow Max. pressure Hydraulic tank Hydraulic system

��

Filtration

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Cooling

Liebherr Tool Control

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two Liebherr swash plate pumps with variable

output 2 x 253 l/min. 350 bar electro-hydraulic, with electronic regulation by

power limit, pressure compensation, minimum

pump flow at max. pres sure, distribution of oil

to different receptor components proportional

to demand

reversible swash plate pump, in closed circuit 170 l/min. 370 bar 340 l 550 l filter in the return circuit, with integrated fine filter

elements (5 µm) radiator equipped with hydrostatic drive fan for

cooling the hydraulic oil and climate control

condenser 10 flow rates and pressures adjustable as option

for optional accessories

Hydraulic Controls

Power distribution

Flow summation Closed-loop circuit Control Attachment and swing

Travel

– speed pre-selection

Additional functions

��

with the aid of hydraulic distributors with inte-

grated safety valves to boom stick and stick for uppercarriage swing drive mechanism

proportional by handling element in cross operati-

– proportional by pedals or by lever

proportional by pedals or by toggle switch

Undercarriage

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Drive

Transmission Travel speed

Drawbar pull max. Track components Track rollers/Carrier rollers Tracks Track pads Digging locks

Brake valves

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Attachment

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Type

Hydraulic cylinders

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Pivots Lubrication

Plus

VarioLift

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special duty, extra wide gauge Liebherr swash plate motors with integrated brake valves on both sides Liebherr planetary reduction gears

low range – 2,8 km/h high range – 5,1 km/h

323 kN B60, maintenance-free

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9/2 sealed and greased triple grouser wet multi-discs (spring applied, pressure released) integrated into travel motor

high-strength steel for extreme stresses. Bearings

designed for optimum distribution of stresses

Liebherr cylinders with end-of-travel shock

absorbing, fitted with guide and sealing joints Sealed, low maintenance centralised semi-automatic Liebherr lubrication

system variable boom mounting positions for optimized

lift capacities

* Other voltages and frequencies possible on request.

ER 934 C Material HandlersER 934 C Material Handlers

Industrial Attachment

with Industrial-Type Straight Boom 8.60 m

-10

-20

Attachment Envelope

Kinematic variant 2A

1 with industrial stick 7.50 m 2 with industrial stick 7.50 m and grapple model 65

Operating Weight and Ground Pressure

Operating weight includes basic machine with hydraulic cab elevation,

-2

-4

-6

-8

1618

1214

0 m

246810

counterweight 7.5 t, industrial-type straight boom 8.60 m, industrial stick 7.50 m and grapple model 65 with 5 semi-closed tines 0.60 m

Undercarriage EW

Pad width mm 600 750 Weight kg 37,900 38,400

Ground pressure kg/cm

0.82 0.67

10203040

0 ft

Lift Capacities

Industrial Stick 7.50 m (Variant 2A)

3.0 m 4.5 m 6.0 m 7.5 m 9.0 m 10.5 m 12.0 m 13.5 m 15.0 m Under m carriage m

16.5 EW

15.0 EW

13.5 EW

12.0 EW

10.5 EW

9.0 EW

7.5 EW

6.0 EW

4.5 EW

3.0 EW

1.5 EW

0 EW – 1.5 EW – 3.0 EW – 4.5 EW – 6.0 EW – 7.5 EW

6.7* 6.7* 6.4* 6.4*

6.9* 6.9* 5.1* 5.1*

7.7* 7.7* 6.7* 6.7* 5.0* 5.0* 4.5* 4.5*

7.5* 7.5* 6.3 6.5* 4.5* 4.5* 4.1* 4.1*

7.4* 7.4* 6.4 6.7* 5.0 5.4 3.9* 3.9*

7.5* 7.5* 6.3 6.7* 5.0 5.4 3.9 4.3 3.6 3.7*

8.7* 8.7* 7.6* 7.6* 6.2 6.7 4.9 5.3 3.9 4.3 3.3 3.6

9.0* 9.0* 7.8 7.9* 6.0 6.5 4.8 5.2 3.9 4.2 3.1 3.5 3.0 3.3

10.9* 10.9* 9.5* 9.5* 7.5 8.1* 5.8 6.3 4.6 5.1 3.8 4.1 3.1 3.4 2.9 3.2

21.0* 21.0* 16.4* 16.4* 12.4* 12.4* 9.4 10.0* 7.0 7.7 5.5 6.0 4.5 4.9 3.7 4.0 3.0 3.4 2.8 3.1

3.0* 3.0* 17.5* 17.5* 12.1 12.9* 8.7 9.6 6.6 7.3 5.3 5.8 4.3 4.7 3.5 3.9 3.0 3.3 2.8 3.0

2.3* 2.3* 7.5* 7.5* 11.2 12.4 8.1 9.0 6.3 6.9 5.0 5.5 4.1 4.5 3.4 3.8 2.9 3.2 2.8 3.1

3.0* 3.0* 6.3* 6.3* 10.5 11.8 7.7 8.5 6.0 6.6 4.8 5.3 4.0 4.4 3.4 3.7 2.9 3.2 2.8 2.9*

6.5* 6.5* 10.2 10.9* 7.4 8.3 5.8 6.4 4.7 5.2 3.9 4.3 3.3 3.7 3.1 3.1*

8.9* 8.9* 7.3 7.4* 5.7 6.2* 4.6 5.0* 3.9 3.9* 3.7* 3.7*

6.14

8.91

10.78

12.19

13.28

14.13

14.77

15.24

15.55

15.71

15.73

15.60

15.30

14.23

12.30

Height Can be slewed through 360° In longitudinal position of undercarriage Max. reach * Limited by hydr. capacity

The lift capacities are stated in metric tonnes (t) on the lifting gear’s stick tip, and can be lifted 360° on firm, level supporting surface. Capacities are valid for 600 mm wide triple grouser pads. Indicated loads are based on ISO 10567 standard and do not exceed 75 % of tipping or 87 % of

hydraulic capacity (indicated via *). Lifting capacity of the excavator is limited by machine stability, hydraulic capacity and maximum permissible

load of the load hook. According to European Standard, EN 474-5: In the European Union excavators have to be equipped with an overload warning device, a load diagram and automatic check valves on the hoist cylinders, when they are used for lifting operations which require the use of lifting accessories.

ER 934 C Material HandlersER 934 C Material Handlers

Hydraulic Cab Elevation

Variety of Tools

B1 2,660 mm B2 5,160 mm C1 3,160 mm C2 5,660 mm D1 1,485 mm D2 1,730 mm E 3,080 mm

Shells for loose material with

Shells for Loose Material Clamshell Model 20 B

cutting edge (without teeth) Cutting width of shells mm 1,000 1,200 1,600 Capacity m For loose material, specific weight up to t/m Weight kg 1,355 1,415 1,550

1.30 1.50 2.00

1.5 1.5 1.5

Multiple Tine Grapples open tines semi-closed tines closed tines

Grapple Model 64 Capacity m3 0.40 0.60 0.40 0.60 0.40 0.60

(4 tines) Weight kg 845 1,130 1,055 1,330 1,060 1,520 Grapple Model 65 Capacity m (5 tines) Weight kg 1,150 1,230 1,285 1,415 1,325 1,520 Grapple Model 69 Capacity m (4 tines) Weight kg 1,345 1,395 1,535 1,640 1,900 2,060 Grapple Model 70 C Capacity m (5 tines) Weight kg 1,485 1,590 1,705 1,860 1,950 1,995

0.40 0.60 0.40 0.60 0.40 0.60

0.80 1.10 0.80 1.10 0.80 1.10

Printed in Germany by Typodruck BK LFR/SP 11081164-0.5-02.11_enGB

Liebherr-France SAS

2, avenue Joseph Rey, B.P. 90287, F-68005 Colmar Cedex  +33 389 21 30 30, Fax +33 389 21 37 93 www.liebherr.com, E-Mail: info.lfr@liebherr.com

Subject to technical modiﬁcations.

Liebherr ER 934 C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual