The document provides information about the UNIMAT SH MFI tamping machine. It has a split head tamping unit that allows it to tamp points and crossings. It uses a 3-point measuring system for alignment and includes a lifting and lining unit. The machine is powered by a 405HP engine and uses a hydrodynamic transmission with an 8-speed ZF gearbox. It has five axles and can tamp in both forward and reverse directions. Key functions include lifting, aligning, and packing tracks and switches to maintain proper track geometry.

1. INDEX

2. UNIMAT SPLIT HEAD 275 MFI

3. INTRODUCTION
MULTI PURPOSE LIFTING, LINING AND TAMPING
MACHINE FOR PLAIN LINE TRACK AND TURNOUTS
TAMPING UNIT :Four independent split- head
WORKING PRINCIPLE :Tamping units with total of 16 tamping tines
stuffing pressures adjustable in the cabin
MEASURING SYSTEM : 3-point measuring system
MACHINE : 56901
YEAR OF CONSTRUCTION : 2021

4. Points & Crossing Tamping Machines
Working over Indian Railways
Point & Crossing Tamping
Machine
UNIMAT
UNIMAT-2S UNIMAT-3S UNIMAT-4S
MPT MFI/SHMFI

5. History of Points and crossing Machines in India
UNIMAT-07-275
First 07-series type
points & crossings
tamper
UNIMAT-08-275
First 08-series type
points & crossings
tamper
UNIMAT 08-275-3S
1993-94
UNIMAT-08-475-4S
1999
1984
1989-90
MPT Most Sophisticated
P&C Tamping
Machine.
2009
MFI/ SH MFI
• MFI:
Multifunction India
• SHMFI:
Split Head MFI
2012
Multi Purpose Tamper

6. Necessity of Mechanized Maintenance of
Points and Crossing
Faster deterioration of the track geometry due to:
 Constraining forces at the check rails
 Difference in cross levels at the points
For the Points & crossings:
 The difficulty to lift, align and pack the tracks due to heavy track structure
 Closer sleeper spacing
 Break in the continuity of rails at the crossing,
 Subjected to high level of lateral forces.
 Lesser duration of block-availability for maintenance
 Most vulnerable to derailment

7. Difference between UNIMAT and MFI:
UNIMAT MFI
Especially for points & crossings tamping. It is used for spot tamping i.e. both turn out and
plain track.
It has three cabins. It has only two cabins.
It has no jib crane. It has jib crane of 2 Ton capacity.
It has third rail lifting and tamping
arrangement.
It has no third rail lifting and tamping
arrangement.
All UNIMAT working direction is reverse. Old MFI working direction is same as UNIMAT
while New MFI working direction is forward.
For working two operators are required. For working only one operator is required.

8. Comparison between New and Old Series:
OLD MFI (MPT-Multi Purpose Tamping) NEW MFI (Multi Functioning for India)
Old series MPT has 8.5 degree axial movement in
tamping unit .
New series MPT has not axial movement facility.
Old Series has no roller clamps New series has roller clamps
In old series MPT working direction is reverse. In New Series MPT working direction is forward.
Old series MPT has no ALC New Series MPT has ALC.
Old series MPT (UNIMAT COMPACT) in Indian
railways is MPT-2000 to 2008.
New Series MPT (UNIMAT SH MFI ) UNIMAT Split
Head Multi Functioning for India is 2009 to 2016.
Old series MPT has tool tiltable tamping unit New series MPT has split head tamping unit.
Old series has a small 1 tonne capacity crane for loading
and unloading Rail pieces of about 6.5 meter long.
New Series MPT has a small 2 tonne capacity crane for
loading and unloading Rail pieces of about 6.5 meter
long.

9. Features of MFI
The Plasser India tamping machine UNIMAT SH MFI is a five axle, diesel-hydraulic, self-
propelled auxiliary permanent-way vehicle.
This machine has been specifically adapted to meet Indian conditions and is suitable for
tamping of plain tracks as well as Points and Crossings.
The Machine is equipped with:-
• Two cabins (and two driver’s desks).
• A water-cooled 6-cylinder diesel engine of the latest generation.
• A hydrodynamic driving with ZF gear box.
• A manually operated emergency pump.
• A Split head tamping unit for Points and Crossings.
• A lifting and lining unit with an additional lifting hook.
• A 3-point measuring system.

10. 28742
3782
12000
TECHNICAL DATA
DIMENSIONS:
• OVERALL LENGTH(frame)
• OVERALL HEIGHT (with air conditioning)
• OVERALL WIDTH
:28742 mm
:3782 mm
:2995 mm

11. • NUMBER OF WHEEL SETS
• BOGIE 1 TO BOGIE 2
• BOGIE BASE
• WHEEL DIAMETER, NEW
• WHEEL DIAMETER, WORN
• DELIVERED TRACK GAUGE
• TOTAL WEIGHT WITH TRACK GAUGE 1676
:5 Sets
:12000 mm
:1830 mm
:850 mm
:790 mm
:1676 mm
:68 tonne
UNDERCARRIAGE:

12. 1. Front sensing device and tensioning trolley
2. Fuel tank
3. Hydraulic tank
4. Combined lifting and lining device
5. Central sensing device and lining trolley
6. Tamping bank
7. Rear sensing device and tensioning trolley

13. Power Transmission Units
Engine
ZF Hydrodynamic Gear Box
Distribution Gear Box
Reduction Gear Box
Axle

14. FUEL TANK CAPACITY
MAIN ENGINE
RATED POWER
ENGINE
:Approx. 1400 ltr
:Cummins QSN- 14 L
:405 HP at 2100 RPM

16. Power Transmission
Engine
ZF gear box
Distributer &
Reduction gear box
Axle
Hydraulic
motor
Hyd motor
Axle gear box

17. Power Transmission :Driving
ENGINE
P3
P2
Distribution
Gear
Box cum
Reduction G.B
Z F
Gear
Box
C/S
C/S
IC/S
C/S
C/S
Driving bogie Running bogie
Engine
Radiator
Axle
Gear
Box
P1
PTO
PTO
IBT
M
02Nos.
AC
M

18. Power Transmission :Working
ENGINE
P3
P2
Distribution
Gear
Box cum
Reduction G.B
Z F
Gear
Box
C/S
C/S
IC/S
C/S
C/S
Driving bogie Running bogie
Engine
Radiator
Axle
Gear
Box
P1
PTO
PTO
IBT
M
02Nos.
AC
M

19. Z.F Hydrodynamic Gear Box:-
• Works on the principle of fluid coupling.
• Has a hydraulic clutch system, which can be
engaged / disengaged electro-hydraulically.
• Provides eight speeds (four forward & four
reverse) on machine.
• Used for the purpose of power transmission.
• Power is taken from ZF gear box and
distributed to different axles by cordon
shafts.
Distribution Gear Box:-
TRANSMISSION MODEL:Hydrodynamic with ZF Gear Box
Model 3WG310

21. Axles:-
It gives movement to the machine.
There are five axles in MFI machine.
Driving axle: –
It is the power axle during travelling mode.
Running axle –
It is idle axle fitted in main frame.
One axle hydraulic motor is fitted which gives power during working for sleeper to sleeper
movement.
Due to this motor on axle increases the pickup and increases the efficiency of machine.

22. THE OPERATIONAL MODE
DRIVING MODE:-
The machine runs self-propelled driven hydro-dynamically by ZF.
Both axles (axle 1&2) of the front bogie will be driven.
The maximum driving speed is 80 km/h.
WORKING MODE:-
 Both axles of the front bogie and the third axle of the rear bogie(axel 1,2&3) are
driven hydraulically by a fixed displacement motor.

23. WORKING PRINCIPLE FOR TAMPING MACHINES:
MFI machine can perform following important functions on track:
1. Lining correction
2. Longitudinal Level correction
3. Cross Level correction
After doing all above function simultaneously, MFI tamps (packs) the sleepers to
achieve longer retention period for improved track geometry. For doing the aforesaid
functions, three systems are mainly used in MFI. These systems are as under :
(a) Lining system is used for lining correction.
(b) Levelling system is used for longitudinal level correction, cross level correction
(c) Tamping system is used for packing of sleeper.

24. 1. Lining system
• MFI measures errors against only one rail and rectify that rail i.e. datum rail.
• Other rail is fixed with the sleeper hence errors of that rail is also rectified.
• During alignment MFI machine corrects versine. The versine of straight track is zero
and versine on curved track depends on radius of Curves, measuring chord length
and method of measurement.
Technical Data:
Lining measuring system 3-point
Rear tightening trolley - measuring trolley
Measuring trolley - Lining trolley
Lining trolley-front tightening trolley
Rear tightening trolley - front tightening trolley
RT-3-24900
5.00m
6.05 m
11.20m
22.25 m

25. Lining trolley
1. Lining transducer
2. Lining trolley datum cyl3.
Lining chord wire
Machine Middle Lining Trolley
1. Lining Trolley lock unlock indicating Sensor
2. Working Pendulum

26. BLOCK DIAGRAM OF
LINING SYSTEM

27. 2. Levelling system
Principle of Levelling:
• It is based on the principle that on the basis of two reference level, level of other
point in between may be found and corrected.
• In MFI rear levelling trolley with the levelling chord end is on the corrected fault free
track and the front chord point is adjusted to the target level. Thus front & rear chord
ends become reference level.
• The height transducer is situated at place of work and sense the actual level of track
at working area and during working, the track is lifted to the target level.
Technical Data:
Correction values table
Front feeler - middle feeler
Middle feeler - Rear feeler
Leveling chord total length
NT-134
11.20 m
6.05m
17.25 m

28. As there is only lifting facility in MFI, two important factors should be kept in mind as
under :-
1)Selection of Base Rail: For carrying out attention to longitudinal profile, one rail is
kept as Base or Datum Rail. MFI corrects cross-level w.r.t. Base Rail. It should be
selected as under:
 On straight track in single line and middle track in multiple lines, higher/less
disturbed rail is kept as Base Rail.
 On straight track in double line, non-cess rail is kept as Base Rail.
 On curves, inner-rail is kept as Base Rail
Base rail is to be selected with the help of cant selector switch which is provided in
working cabin near cant potentiometer. In MFI, direction of Cant Selector Switch is to
be always kept opposite to the Base Rail

29. 2)Selection of General Lift: The amount of lift, which is given to track while
tamping to cover all undulations over the Base Rail, is called General Lift. It is
decided on the magnitude of the dips/peaks generally available in the track.
3) Max. & Min amount of General Lift:
 At one time, General Lift value should not exceed 50 mm.
 If more than 50 mm lift is required, it can be achieved by more insertion.
 Minimum General Lift should not be less than 20 mm.
4) Ramp up & Ramp down of General lift:
• Ramping up & down is given @ 1 In 1000

30. BLOCK DIAGRAM OF
LEVELLING SYSTEM

31. Switch Tamping machines:-
 The distance between the roller clamps and the
low edge of
the railhead should be max. 3 –5 mm. The rail
condition and
the rail angle of inclination should be taken into
account
 Care should be taken that the two lifting disks are
always exactly level with each other
Lifting Unit

32. Lifting Arrangement

33. 5. Sol. Valve roller clamp LH Outer
6. Sol. Valve RH hook lifting/lower
7. Sol. Valve LH hook lifting/lower
8. Sol. Valve LH hook Inward/outward
9. Sol. Valve RH hook Inward/outward
Machine Middle Lifting Unit Area
1. Junction Box B-69
2. Sol. Valve roller clamp RH Outer
3. Sol. Valve roller clamp RH Inner
4. Sol. Valve roller clamp LH inner

34. Machine Middle Lifting Unit Area
LHS
1. Junction box Remote control
2. Warning box
3. Hook cylinder Lifting/lowering
4. Lining cylinder
Machine Middle Lifting Unit Area
RHS
1. Lifting unit lock Sensor
2. Warning box, Emergency stop & Horn
3. Lifting unit chain lock
4. Lifting unit cylinder

36. (3) TAMPING SYSTEM:
 To ensure all conditions for readiness of track system are met.
 The production of:
 For better load distribution over sleepers.
 Evenly compacted
 Load bearing of sleepers.
 The production of:
 Durable track stability,
 Avoiding fast,
 Irreversible decline of quality
WHY IS TAMPING CARRIED OUT?

38. 1. ASYNCHRONOUS UNIFORM PRESSURE TAMPING:
 All tamping tines apply the same pressure to the ballast
 It performs a “squeezing” action.
 The movement sinusoidal vibration is superimposed.
2. THE COMPACTION PROCESS:
 The frequency (35 Hz) , amplitude (5 mm), relevant speed and squeezing force of
the tools determines stabilising quality (compaction) of the ballast.
 result in an even and forceful uplift action.
 Ballast consolidation by impulse as a result of squeezing speed and time.
TAMPING PRINCIPLE

39. TAMPING PRINCIPLE
3. AFFECT OF LIFT ON THE TAMPING PROCESS:
 Lift precedes the tamping. The lift creates voids under the sleepers, which enables the
ballast bed to form a new structure.
 No lift, or insufficient basic lift, prevents a satisfactory structure.
 Insufficient or no lift prevents effective rearranging of the ballast and will lead to very
unevenly compacted sleeper beds.
 Too large a lift cannot produce an evenly compressed, load bearing ballast structure,
due to the limited working area of the tamping instruments.

40. Tamping Pressure:-
 Optimal tamping pressure values are between 115 -125 bar.
 PLASSER & THEURER tamping units
allow the adjustment of the units to the
tamping pressure of the individual
ballast conditions.
Tamping pressure setting potentiometer

41. TAMPING PRINCIPLE
4. TAMPING DEPTH:
 • The tamping depth has a great practical influence on the compaction of the
ballast under the sleeper.
 • At too narrow a depth, no compaction will be achieved and damage will be
caused to sleepers and tamping tines.
 • Too great a depth will lead to uneven and incomplete compaction.
 • The optimum range lies at 15-20 mm free space between top of tine and bottom
of sleeper
5. SQUEEZE TIME:
 The optimum duration will lie at around 0.8 to 1.2 seconds

42. Tamping unit
• It has 4nos. of tamping tools.
• The tool holding parts may move inside or outside with the help of
tool tilting cylinder, by this arrangement each tamping tool may be
tilted 15⁰ inside and 85⁰ outside.
• It tamps one sleeper at a time.

43. Machine Tamping Unit Area
1. Tamping unit Vibration motor
2. Tamping unit Squeezing cylinder
3. Clapper cylinder
4. Tamping unit lifting/ lowering cylinder
Machine Tamping Unit Locking
Arrangement:
1. Tamping unit lock
2. Tamping unit Transducer
3. Tamping unit locked indicating sensor
4. Tamping unit lock operating pneumatic cylinder

44. Operation of Clapper Cylinder
1. Tyne arm bearing liberating oil level indicator
2. Pneumatic cylinder for operating clapper
3. clapper
1. Pneumatic valve for operating clapper
cylinder of inside tamping unit
2. Pneumatic valve for operating clapper
cylinder of outside tamping unit

45. 1. Tamping unit Vibration motor
2. Tamping unit Squeezing cylinder
3. Clapper cylinder
4. Tamping unit lifting/ lowering cylinder

46. Tool Tilting Arrangement

47. Components of hyd. System
• Hyd. Reservoir/hyd.tank
• Hyd. Hoses.
• Hyd. filters.
• Hyd. Pump
• Hyd. Valves
• Hyd. Actuators (Hyd motor/Cylinder)
• Hyd. Accumulator.

48. Engine
ZF
Gear
Box
35 35 17
14
14
06
03
22
38
ZF Cooler
Hyd Oil Cooler
Air Condition
Crane
Accumulator
Vibration
(L side)
Vibration
(R side) B accumulator
Accumulator
Description of Hydraulic Pumps

49. 1. 2nd Squeezing pressure valve
2. Counter pressure valve with reducing valve for RHS track lifting cylinder adjusted to 15 bar
3. Counter pressure valve with reducing valve for LHS track lifting cylinder adjusted to 15 bar

50. Pump
(capacity
GPM)
Working
Pressure
(bar)
Work
03*22*38
3 300 Crane
22 210 Accumulator
38 210 Accumulator
35*35*17
35 210 Vibration (L side)
35 210 Vibration (R side)
17 210 B-accumulator
14*14*06
14 210 ZF Cooler
14 210 Hyd. oil cooler
6 300 Air condition
Pump Description
1. Hydraulic Triple pump

51. Hyd. Motor Description
Sl. No. Motor Qty.
1 Hydraulic Motor (for work drive) 2
2 Hydraulic Motor air-conditioning 1
3 Hydraulic Motor(ZF fan blade motor) 1
4 Hydraulic Motor (for hydraulic oil cooler) 2
5 Hydraulic Motor for vibration(LHS) 2
6 Hydraulic Motor for vibration(RHS) 2

52. Sl. No.
Accumulator
Capacity
Nitrogen
Pressure
Quantity Work
1 32 Litre 85 bar 2 Nos. For System
2 20 Litre 85 bar 1 No For big squeezing
Accumulators Description

53. Sl. No. Valve Quantity Work
1 Proportional Valve
2 Nos.
Tamping unit
operation l.s.h
2 Nos.
Tamping unit
operation r.s.h
2 Servo Valve
2 Nos. For Track Lifting
1 No. For Lining
Special Valves
Filters Description
Sl No. Filters Quantity
1 Servo filter 2
2 Suction Filter 3
3 Return Filter 2
4 Proportional filter 1
5 ZF filter 1

54. 1. Servo valve lining
2. Servo valve lifting LHS
3. Servo valve lifting RHS

55. 1. RHS inner Tamping unit up/down proportional valve
2. RHS outer Tamping unit up/down proportional valve

56. Pneumatic System
Applications in MFI:
1. For Brake System
2. For locking and unlocking of trolleys
3. Lifting & Lowering of Trolleys
4. Lining and levelling cord tension wiper
5. For horn
6. For datum

57. Sl. Components Qty. Capacity/ Spec.
1 Air Reservoir 3 nos. 100 liter each
2 Air Compressor (To Engine) 1 no. 30 cum/minute
3 Air Drier 1 no. 2 Chamber drier 24V DC
4 Brake cylinder 2 nos. Dia. = 12 inch.
5 Pneumatic cylinder 48 nos.
6 Solenoid valves 12 nos.
Major Components:

58. 1. Braking System:
Major
Components
Capacity/ Spec.
Main brake pipe
Brake pressure: 5 bar
Stop cock with hose and coupling
2 in the front, 2 in the rear of the machine
Direct-acting brake
Brake pressure: 3.8 bar
Electro-pneumatic additional brake unit (2-circuit brake)
Indirect-acting
brake
Brake pressure: 3.8 bar
Brake valve: KE 1DV-SL
Brake blocks
1 brake block per wheel
Type: WN 146-850.K-5

60. WORKING CIRCUIT:
From air tank, air passes through water separator which is provided in the
outlet line of air reservoir. This removes the moisture from the air. Now
dry air passes to air oiler where lubricating oil is filled for lubrication of air.
Lubricated air then flows to solenoid operated D.C. valves & actuators for
working pneumatic system.

61. 2. Locking and unlocking of trolleys:
1. Front tightening trolley locking/ unlocking
2. Measuring trolley locking/ unlocking
3. Lining locking / unlocking
4. Rear tightening trolley locking/ unlocking
3. Lifting & Lowering of Trolleys:
1. Front tightening trolley lifting/ lowering
2. Measuring trolley lifting/ lowering
3. Tamping Tools lifting/ lowering
4. Lining lifting/ lowering
5. Rear tightening trolley lifting/ lowering

62. 4. Lining and levelling cord tension wiper:
1. Levelling chord tensioning
2. Lining chord tensioning
5. Pneumatic Horn:
1. One pneumatic horn at front cabin roof top
2. One pneumatic horn at rear cabin roof top
6. Datum
1. Pn. Sol. Valve for datum pressure of front tightening trolley
2. Pn. Sol. Valve for datum pressure of measuring trolley
3. Pn. Sol. Valve for datum pressure of rear tightening trolley

63. Major Pneumatic Maintenances:
 If the brake cylinder piston throw exceeds beyond its
tolerance limit ( 5-7 mm) the brake force decreases
Brake can’t be applied Brake-block play increases
 The brake block play has to be re-adjusted, when:
 the break block play is not between 5-7 mm.
 the brake blocks are replaced
 the brake blocks are worn out on one side
 the wheel profile had been re-worked
 Therefore:
 Please pay attention to the decreased braking effect after
replacing the brake blocks, if these are unworked or not
run in.
 Do not change all brake blocks at once (e.g. in two
stages).
 Carry out a brake test whenever change brake blocks.
 Brake block play (distance between the brake block bottom and the wheel tread):

64. ELECTRICAL EQUIPMENT
Alternator - Engine 1 piece, 28V DC; 140 A
Batteries Main battery 4 pieces 12V DC; 100 Ah
Program control battery 2 pieces 12V DC, 100 Ah
Air condition units 1 piece in each cabin

65. Electrical & Electronics system
includes
 Battery
 Alternator
 Transducers
 Printed ckt boards- pcb
 Micro-Controllers
 Automatischer leit computer(Alc)
 Computer measuring sys.- cms
 Computer working system- cws
 Sps analysis

66. • BATTERY: SIX BATTERIES ARE PROVIDED
SR.
NO.
BATTERY QUANTITY RATING
1 MAIN BATTERIES 4 12V/100AH
2 PROGRAMMING BATTERIES 2 12V/100AH
1. BATTERY MAIN KEY SWITCH
2. BATTREY BOX

67. • ALTERNATOR: 1 NO. , 28V DC, 140 A
• It is used to charge the battery.
• Alternator initially generates AC
• AC is converted to DC by the rectifier.
• Output of alternator is 27-28v DC

68. TRANSDUCER
• In Track Machines Transducers are used to convert track
parameters (Cross Level, Long. level, Versine) and Mechanical
linear displacement (Tamping Unit, Satellites, Hook etc.) to
electrical signal.
• In machines transducers are potentiometer type which is
basically a variable resistance which shaft is rotated by
mechanical arrangement and it generates electrical signal as
per deflection
Big Gear Attached
With Potentiometer
Small Gear Attached
with Pulley
Electrical wire
Red (+10V)
Blue (-10V)
Yellow (output)

69. LOCATION OF POTENTIOMETER
1. Front input potentiometer for versine
2. Front input potentiometer for slew
3. Front input potentiometer for super
elevation
4. Front input potentiometer for general
Lift/ level correction
S.N. Potentiometer Where Required Location
1 General Lift On plain track & curves Front Cabin
2 Slew On plain track & curves Front Cabin
3 Versine On curves Front Cabin
4 Super elevation On curves Working Cabin

70. Transducer Connected in UNIMAT SH MFI M/c
SR.
NO.
TRANSDUCER QUANTITY
1 Tamping Depth Transducer 2
2 Height Transducer 2
3 Versine Transducer 2
4 Pendulum 3
5 Lifting Lining Combined Transducer 1
6 Hook Transducer 2

71. SR.
NO.
PART NO. FUNCTION QUANT
ITY
LOCATION
PANAL BOX NO.
1 EK-819-SV-00/GT Power Supply
DC to DC Converter
24v-+24V &+12V
4 B136-2
B6-2
2 EK-207V-00B Multi Check 1 B136
3 ELB-KR0-04 Analog Lining 1 B136
4 EK-2140LV-00 Output Stage &
Lining
1 B136
5 EK-1.1/5LV2-00 Lining Control
compensation
1 B136
6 EK-120V-00 Hook control & 3
Stage Lining
1 B136
Printed Circuit Board PCBs

73. SR.
NO.
PART NO. FUNCTION QUANTIT
Y
LOCATION
PANAL BOX NO.
7 EK-602E-002 Relay 2 B6-1
B136-1
8 EK-3069LV-00A Leveling LHS & RHS 1 B6
9 EK-2351LV-00 Pendulum 1 B6
10 EK-637MC-00B/244 Settlement
compensation
1 B6
11 EIB-KV-00 Tamping Unit UP/Down
Control
4 B6

75. OBJECTIVE
To enhance and improve the performance of lining and lifting systems to
meet highest Degree of precision.
For this “Win-ALC” Software was developed for easy & efficient usage
for the machine operator.
Geometry and correction data can be input graphically or in table form or
the data can be read in from storage media provided by the infrastructure
operator.

76. 1. ALC Screen
2. ALC-CPU
ALC-Key Board

77. Modes of operation
The automatic guiding computer (ALC) has two main areas of
application:
1. The guidance of the leveling and lining system according to
known target geometry
2. The measuring of the actual track geometry with subsequent
calculation of the improved course of the new track
geometry.

78. Working mode

79. BENEFITS
 Robust hardware for the harsh environmental conditions on
tamping machines (VIBRATIONS)
 Specially developed & constantly updated software.
 Varied uses depending on the track situation.
 Communication & exchange of data with other applications (e.g.
DRP).
 Direct import of correction data values from various surveying
trolleys (Trimble, Amberg, etc.)
 Results easily stored & printed

80. Introduction
 The analogue measurement system, which was in use up to
now, was replaced by a new combined digital / analogue
system developed on the base our well-tried micro-controllers.
 This system comprises the lining unit, the levelling unit with
super-elevation control and, if required, the combined laser
receiver unit.
 CMS also displays real time track parameter data so that actual
correction done can be evaluated.
 It also displays any fault occurring in its system (Diagnosis).

82. Cross-level display (U-Controller) General View

83. introduction
• CWS is used for controlling the working system of machine
i.e. control the flow of current for proportional valves
associated with tamping n driving.
• CWS is a digitalised method of processing data which are
received from various inputs.
• CWS also displays real time data of working system of
machine (Driving, Tamping and Squeezing) so that actual
correction done can be evaluated.
• It can also be used to identify any faults occurring in its system
(Diagnose).

85. F Controller operation via terminal:
Current working speed
(Input - distance measuring wheel)
Average working speed
Press the “service" key
to shift to the detailed
display.
The button shows
yellow when detailed
view is active.
Additional engine
speed
Tamping depth
(Manual input)
% of the selected
accelerator
Main Engine Speed
Input
Driving enabling
Forward /
backward driving
1. Driving mode
symbol (working
mode drive)

86. Adapter
(Power
Board)
Microcontroller
8 Digital
outputs
8 Digital
inputs
Power
output to
servo valves
Analogue
inputs from
transducers,
potentiometer
etc. 8 analog
inputs
8 analog
outputs
Signal flow diagram

87. SPS – Analysis

88. By clicking the diagnosis icon the diagnosis window with the
indices ‚monitor I/O’ and logical analysis’ appears:
SPS- Diagnosis