MTU Guide and abbreviations

Abbreviations for MTU Electronic Systems

All abbreviations requiring further explanation which occur in this documentation are
defined in the following list of abbreviations (alphabetical order of the abbreviations).
Note: Common English abbreviations and those occurring exclusively
- As product or type designation of other manufacturers
Or
- As captions in figures not described in the text are not listed here

A
a Acceleration
A Ampere, unit of electrical current intensity
ABS American bureau of shipping. Classification society
AC Alternating current
ACC Acceptance
ACIA Asynchronous Communications interface adapter
Ack field Used for positive confirmation of receipt from any CAN bus node regardless of the
station concerned
ACKNOWL Acknowledge
Act. Actual
ADEC Advanced Diesel Engine Control
A/D converter Analog/Digital converter
AE Analog Eingang, analog input
A-GRN Analog ground
AIB Analog input board
AIN Analog Instrument
AK Connection box, Anschlusskasten,
AL Alarm
ALI Application layer interface (software structure)
ANA-GND Analogue ground
ANSI American National Standards Institute Main organization administering and coordinating
U.S. standards
AOI Acoustical and optical indicator
app Amplitude ( peak to peak)
APS Auftragsparameterdatensatz
(auftragsabhängige Konfiguration des SPS)
ASCII American Standard Code for information interchange
ASD Azimuthing stern drive
ASTV General marine regulations
AT Automatic panel
ATL Abgasturbolader, Exhaust turbocharger
AzB Auftrag zur Bearbeitung

B
BAR Unit of pressure
Bb Backbord, Port side
BCB BSM controller board
BCD Binary-coded decimal
BCI Backup Control Interface
BCS Backup control system
BD, Bd Baud (bits per second)
BDM Backup Data Module for MCS-5 type 1
BE Binäreingang, binary input
BHP Brake Horse power
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 MTU Guide and abbreviations
BI binary input
BIB Binary input board
Bin Binary
BIT Binary digit
BOB Binary output board
BOS BSM output stage
BR Bau Reihe, Series engine, Bord rechner (Boardcomputer) for visualization (CDS)
BS British Standard
BSC Backup control system
BSM Brushless servo motor
BU Backup
BU-ECS Backup Engine Control System
BV Bureau Veritas, Classification society
B1, B2 Busy signals active “low” (R-082)

C
C Capacitor
CA Charge air
CAN Controller area network (Data bus standard)
CAP Charge air pressure
CaPoS Capacitor Power System
CA2 Control line CA (on PIA peripheral interface adapter)
CB Coil Booster, driver module for final control element coilsin ECS-UNI
CB Connection box
CB Control line CB (on PIA peripheral interface adapter)
CBC Cylinder bank control
CC Charger circuit or Cranking control(CDS)
CCB CAN connection board
CCG Cross Connection Gear
CCS Customer Connecting System (connection box)
CCS Custom Channels, customized wiring
CCS Compatibility Check System (DiaSys)
CDS Control and diagnostic system
CDS/CR Control and diagnostic system with Common rail
CE Conformity European (European Union mark of approval)
CEB Printed circuit board
CIB Connecting interface board ( printed circuit board in the CCS)
CIO CDS I/O board
Cm Centimeter
COB Connection board
COB Cursor Operating Device
COB CAN Object (CAN telegram transmitted on the CAN bus
COB ID CAN Object Identifier (part of the CAN telegram which determines object priority during
transmission)
CODAD Combined Diesel and Diesel on one shaft
CODAG Combined Diesel and Gas turbine on one shaft
CODOG Combined Diesel or Gas turbine on one shaft
COM Communications board, interface extension
COM Common connection of changeover contact on relay’s
CP Control panel for the electricial power Management system
CPP controllable pitch propeller
CPS Controlable (Communication) process station
CPU Central Processing Unit
CPU_I CPU Injection system
CPU_T CPU Torque Measurement
CRC Test sequence for detecting faults during data transmission (length: 15 bit CRC + 1 bit
CRC delimiter)
CRT Control Rack Travel
CRT Cathode ray tube (colour monitor)
CS Crankshaft

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 MTU Guide and abbreviations
CWT Coolant water temperature

D
D Depth
DAB Dialog Adaptor Board
DAPS Dynamic auto pilot system
DAD Diesel And Diesel, twin engine drive on one shaft
D/A Digital / Analog
dB Decibel
DBR Engine power limitation as a function of engine speed
DC Direct current
DC/DC converter Direct Current converter
DCR drive characteristic recorder
DD days
DEC 1-01 Single-chip control board (R-082)
DEG Degrees
DEL Delay
Del Delete
Des Designation
DFC Dust fan control
DGPS Differential Global position system
DGU Diesel generator unit
DIA Dialog Interface Adaptor (connector designation)
DILA Diagnostic Lamp
DIN Deutsches Institut fur Normung, German National Standards Institute(German
standards)
DIS Display panel (MCS-5 type 1)
DL Default lost (Alarm Node fault of the default CAN-bus)
DLC Data Length Code Field (data field); (max. adjustable length: 8 bytes)
DMM Digital multimeter
DM21/A Speed sensor inductive for 595 and 1163
DNV Det norske Veritas, classification society
DP Dynamic Position
DP 1-01 Keyboard p.c. board (in blue dialog-unit)
DPR Dual Port RAM
DPRT Dual ported RAM transfer (CDS)
Droop Percentage changed in rated engine speed, when load is reduced from full to zero load
DRV Driver
DSS Diesel engine Safety System
DTS Pressure / Temperature simulator
DU Dialog Unit
DWT Deadweight tones

E
EAS Engineer Alarm Station
ECI Engine Control Interface
ECS Engine Control System
ECS-GT Engine Control System for LM2500 Gas turbine
ECS-UNI Engine Control System Universal (normally followed of a engine type)
ECS-396 Engine Control System for engine series 396
ECS-595 Engine Control System for engine series 595
ECS-1163 Engine Control System for engine series 1163
ECU Engine control unit, Engine governor, Motor-Regler
EDM Engine Data Module, memory for governor and limit parameters
EDT Electronic Data Transfer
EEPROM Electrically Erasable and Programmable Read Only Memory
EG Emergency Genset
e.g. For example
EGB Exhaust Gas board
EMC Electromagnetic Compatibility
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EMU Engine monitoring unit for ECS-5 systems, (MDEC & ADEC)
EMV Electromagnetic Compatibility
EN European Norm (CEN standard)
EOF End of frame (each data and data request telegram is terminated by a bit sequence
comprising 7 recessive bits)
EPMS Electrical power management system
EPROM Erasable and Programmable Read Only Memory
EPROM Databank for Archive Governor-Software in MTU
ESD Emergency Shut Down
ETB Engine Terminal Box
ETB2 Exhaust terminal box
ETB2E Engine terminal box for ECS-UNI with Main only
ETB2F Engine terminal box for ECS-UNI with Main & Backup
ETC Exhaust turbo Charger
ETI Engine Terminal Interface

F
f frequency
fL Limit frequency
fS Scanning frequency
f(....) Function of ….
F Fuse, fast-blow
FAC Fan control
FAL Field automation level
FAT Factory acceptance test
FB1 Field bus 1 for MCS-5 systems
FCB Fault code board
FDB Floppy Disk board
FDH Field Data Handling
FET Field-effect transistor
FGK Fahrzeug-getriebe-kommunikation, (vihicle transmission communication)
FEPROM Flash EPROM
FiFi Firefighting (classified Term)
Fig. Figure
FIM Filter module
fl Limit frequency
FLS Fluids & Lubricants specification, MTU Publication No. A01061/….
Flmax Maximum fuel level
FMEA Failure mode and effects analysis
Fn Fuse designation
FPP Fixed pitch propeller
FRP Fuel rack position
FRPG Fuel rack position governor FSG Final speed governor
FS Flame start
fs Scanning frequency
FSW Functional Software
Ft Feet
FTP Fire test procedure

G
g Gravitation (acceleration due to gravity)(g=9.81m/s)
GAPI Equipment breakdown
GCI Gas turbine Control Interface
GCU Gearbox control unit
GG Gas Generator
GL Germanischer Lloyd, Classification society
GMU Gearbox monitoring unit
GND Ground
GPS Global positioning system
GRP Glass reinforced plastic
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 MTU Guide and abbreviations
GRT Gross registered tonnes
GSC Glow start control
GT Gas turbine
GTI Gas Turbine Interface
GTB Gear Terminal Box

H
h Hour
H Heigth
HDSS Harbor duty system station
HEU Hull electronic unit
HF High frequency
HFO Heavy fuel oil
hh hours
HI Alarm: High limit exeeded (fault message), High alarm pre warning, Measured value
exceeds 1st maximum limit
HIHI High High, alarm: main warning, Measured value exceeds 2nd maximum limit
HP High pressure, Horse power
HP-ETC High pressure Exhaust turbocharger
hr hour(s)
HSC High speed Craft
HT High temperature
HW Hardware
H/W Hardware
Hz Herz, unit of frequency (cycle’s per second)

I
I Formula for electric current
I2C-Bus Intent integrated circuit bus
ICFN ISO - Continuous rating - Fuel stop power – Net, Power specification in accordance with
DIN-ISO 3046-7
ICU Indication and control unit
ID Identification
IDM Interface data module, memory module for interface data’s
IDST Load dependent speed reduction
i.e. that is
IEC International Electro technical Commission
IIB Instrument input board
IMO International maritime organization
In Input
INB Instrument board
INIT initialization
I/O lnput / Output
IP Degree of protection against contact, dust and humidity according to DIN 40050
IPAS Informations- und Projekt-Abwicklungs-System
ISA Industrial standard architecture (interface standard)
ISDN Integrated Services digital network
ISG Idle speed governor
ISO International standards Organization
IT Injection timing
ITS Integral Test System
ITG Injection timing governor
IW 2018 Fuel rack sensor 0-20mm = 1-8 volts (mounted on actuator for R-082 & ECS-UNI)
I/O Input / Output

J
JG Japanese Government, classification society

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K
K Kelvin
Kb, kB Kilobyte
kbd kilobaud
KBD Keyboard
kg Kilogram
KGS Kraftgegenseite (german), Engine free end in accordance with DIN ISO 1204
KGS Timing end
kHz Kiloherz
Kn Relay designation
KN Node number (node address)rKnoten Nr.
KR Korean Register of shipping, classification society
KS Kraftseite (german), Engine driving end in accordance with DIN ISO 1204
KVA kilo volt amperes
KW Spezielle Ausprägung einer Stückliste als Kundenwunschstückliste
kW kilo Watt

L
L Length
LAN Local Area Network
LAS 4-01 Turbo charger control plug in card (R-082)
LC Liquid Crystal
LCD Liquid Crystal Display
LCU Local control unit
LED Light Emitting Diode
LIB LOP Interface Board
LMU Local monitoring unit
Ln.n Supply voltage
LO Low, alarm: pre warning, Measured value lower than 1st minimum limit
LOA length overall
LOLO Low Low, alarm: main warning, Measured value lower than 2nd minimum limit
LOP Local Operating Panel (in engine room)
LOS Local Operating Station (in engine room)
LP Low pressure
f(..) Function of..
LR Lloyd’s register of shipping, classification society
LS4 Turbocharger control (R-082)
LT Low temperature

M
m Meter
M Mega, or Equipment ID for electric Motors
M semi-slow-blow by fuses
mA Milliampere
MAU Medium attachment unit for DIASYS connection
max. Maximum
MB Motherboard
Mb Megabyte
Mbd Megabaud
MBR 3-02 Motherboard Governor
MCM Memory carrier module
MCR Maximum Continuous Rating
(Continuous thermal loading capacity of the engine)
MCR Main Control Room
MCS Monitoring and Control System
MCS-ECS Monitoring and control system for Engine Control System
MCU Monitoring (Management) computer unit
MD Missing data
MDEC MTU diesel engine control
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MDS Memory dialog interface (R-082)
MEM Memory module
MERC MCS-ECS-RCS-Control unit
MFB Multi function board (speed acquisition and relay outputs(
MF Microfarad, unit for Capacitor
MFR Multi-Function relay
MG message
MHz Megahertz (1.000.000 Hz)
MIL Military standard
min. Minimum
min-1 Revolutions per minute
MIM Maintenance Indicator Module
min Minute(s)
min. Minimum
mm Millimeter or minutes
MM months
MMI Man Machine Interface
MOB Modulation output board
MON Monitor
MOS Metal-oxide silicone (transistor)
MOS Mobile operator station for RCS
MOT Motor, engine (connector designation)
MP Measuring point
MPC MTU Personal computer
MPS Motorparametersatz (Engine Parameter Set)
MPU Monitoring and processing Unit, Microprocessing Unit
MRG Main Reduction Gear
ms Millisecond
MS Main system
MSB most significant byte
MSDG Mode selector diesel generator
MSP Mode selector switch
MT Medium Time-lag ( fuse characteristic)
MT Mashine telegraph system
MTS Engine telegraph system
MTU Motoren and turbine union
MUX Multiplexer
MUX Multiplex value (first byte of the CAN data field required for unambiguous process data
indentification)
mV Millivolt
MWA Measuring and warning station, exhaust
MWK Measuring and warning station, combined
MΩ MegaOhm (1.000.000 Ohm)

N
n Speed
n a number
N Newton, unit for torgue
N1 Generator regulator designation
N/f speed/frequency
NC Normally closed relay contact
NK Nippon kaiji kyokai, classification society
NKK NIPPON Kaiji Kyokai Japanese company
Nm Newton meter
NMEA National Maritime Electronics Ass.
NiCr-Ni Nickelcrome / Nickel thermocouple (sensor)
Nm Newton meter
NMI Non-mask able interrupt
NMT Network Management ( part of the communication protocol, for network monitoring,
performs network services)

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No. Number
NO Normally open relay contact

O
OC Opto coupler
ODR Operating Data Recorder
OHAU Offener Hausauftrag
OKE Optocoupler Input
OS Operator Station, Operation system
OSI Open systems interconnection
OT Obere totpunkt (german), Top dead center (TDC)
OV

P
p or P Pressure
P-xyz Pressure measuring point xyz
Pa Port A on PIA
PAB Programming adaptor board
PAN Control panel
PAU Power Automation Unit
PB Port B on PIA
PB Push Button
PB Process bus
PBN Process bus node
PC personal computer
PCB Printed circuit board
PCS Power pack control system
PCS Propulsion control system
PCU Propeller control unit
PDM Plant Data Module
PDU Power driver unit
PDU Protocol Data Unit (data field of the CAN telegram)
PE Earth
P-Grad Speed droop
PIA Peripheral Interface Adaptor
PI Proportional-lntegral
PIA Peripheral interface adapter (2x8 parallel ports)
PID Proportional-lntegral-Difterential (controller)
PIM Peripheral interface module
PLC Programmable Logic Controller
PLC Node Process bus node address of the associated PLC
PMU Propeller unit
POM Power Output Module
PPC Priming pump contol
PPS Programmable Process station
PRS Polish register of shipping
PRT printer
PS Power Supply
PSB Power supply box
PT Power Turbine
PTI Power take in
PTM Programmable timer module
PTO Power take off
PT1000 Platinium Temperature sensor 0° C=1000 Ohm, 100° C= 1385 Ohm
PU Projektumgebung, project implementation environment (for the MCS-5 field bus 1)
PV Process visualization or process variable (depending on context)
PV Process variable
PWM Pulse Width Modulation

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R
R Resistance
RAL Register of Colour
RAM Random Access Memory
RC Received clock
RC filter Resistance-Capacitance filter
RCS Remote Control System
RD Received data
REF Reference
Rel Relay
RES Reset signal active “low”
RF Radio frequency
RG Basic governor plug in card
right/left engine side looking at PTO-side
RIM RCS Interface module Anschlusskasten für RCS
RINA Registro Italiano Navale, classfication society
RL Redundancy lost (Alarm: Node fault in the redundancy CAN-bus)
RMD Remote Maintenance Diagnostic
RME Memory extension
Rn Resistor designation
ROM Read only memory
ROS Remote operator station
rpm Revolutions per minute
RS232 Recommended Standard 232 (interface standard)
RS422 Recommended Standard 422 (interface standard)
RSW Regel Stangen Weg (Fuel rack position)
RTR Remote Transmission Request
RX Receive, receiving line on a serial interface
R082 Electronic engine governor type R082

S
s Unit for second, formula for travel
s Travel ( rod movement)
SA Ausprägung einer Stückliste als Sonderausführung
SAB Sensor actor board
SAM Service Automations Module
S/A bus Sensor/Actor bus
SAE Society of automotive Engineers, U.S. Standardization organization
SCB Serial connection board
SCI Substation Control Interface
SCL Single control lever
SCMMS Ship control, Monitoring and management system
SCS Slave Control Station
SD Sensor defective (fault message)
SDAF Shut down air flap for emergency stop. Close for the intake air, which cause a vacuum
above the pistons
SDF Sensor defect (special bit designation for detecting sensor failure)
SDML Step to Minimum Load
SE System error
Sec Second(s)
SF switch fault
SGA Speed governor adoptive
SGS Speed governor system
Si Sicherung, Fuse
Sisy Safety system
SLS MCS Slave Station
SMB Stepping Motor Booster
SME Support and Maintenance Equipment
SMS Short message Service
SOC Shut off control
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 MTU Guide and abbreviations
SOLAS international Con. F. Safety of life at sea
SP Spare part or Operating point
SPC Spare part catalog
SPG Power supply connector designation
SPS Standard-Parameter-Satz
ss seconds
SS Safety System alarm ( fault message), Cause a automatic stop of the engine
SS-7/10 Substation SS-7/10
SSK Schnellschlussklappe (german) Shut down air flaps for emergency stop
SST Service support tools
ST Connector (Stecker)
STANAG Standardisation Agreement, NATO
Stb Steuerbord, Starboard
STI Step to Idle
St4 Connector 4
ST Connector
SU Substation - exhaust temperature measuring station
SUE Ship’s monitoring unit
SUE-ARA Control and monitoring devicefor automatic raew water intake auxiliary
SUE-ES Electric start device
SUE-VSP Priming pump starter box
SVGA Super video graphic adaptor
SW software
SW_ED_1 First information block concerning software edition
SW_ED_2 Second information block concerning software edition
SW_MOD Project data modification status
SW_REV Project data revision status
SW-TYPE Software for a specific type of device
SW_VAR Software variant
S/W Software

T
t Time
T Temperature
T-xyz Temperature measuring point xyz
TB Type of engine ( exhaust turbo charging, external charge air cooling)
TC Tools catalog
TC disk Charge air prewarming actuation device
TC mode Charge air pre-warming
TCS Transmission control system
TCU Trolling control unit
TD Transmitter deviation MAIN-BU ( fault message) >5% deviation
TD Transmit data (R082)
Tdel Delay time
TDv Technical service regulation
TE Type of engine ( exhaust turbo charging, split-circuit coolant system)
TEU Turret electronic unit
TFT thin film transistor
Ti. Terminal
Ti Individual measuring time
TT Clock divider
TTL Transistor to transistor logic
Ttot Total measuring timeTX Transmit, transmitting line on a serial interface
typ. Typical
T1 Subscriber 1

U
U Voltage
U Output Voltage
UGI Intelligent monitoring group
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UL Upper limit
Un Isolation Amplifier
UPS Uninterruptible power supply
USB Universal serial bus (for display)
UT Monitoring panel (LOP)
UT Untere totpunkt (german), Bottom dead center (BDC)

V
V Volt, unit of electrical voltage
VAC Voltage Alternating Current
VDC Voltage Direct Current
VDE Verband deutscher Elektrotechniker, Association of German Electrotechnical Engineers
VDR Voltage depended resistance
VDR Voyage Data Recorder
VDU Video display unit
VG VerteidigungsGerätenorm ,Defence equipment standard
VGA Video Graphics Adaptor
WJ Water jet drive
VMPU Vihicle master Processing unit (HEU and TEU)
Vpp Operating voltageVpp Volt peak to peak
VS Voith Schneider, type of propeller
VSP Voith Schneider propeller

W
W width
W Watt, electric power
W1, W2... Maintenance echelons
WF wrong feedback
WJ Water jet propulsion
WTEC-III World transmission electronic control III

Y
YY, YYYY years (two or four-figure)

X
Xn Terminal strip designation
Xpp Amplitude (peak-to-peak), Excursion (between reversial points) Vibration test excursion (
deflection)( peak to peak value)
XVV Deflection from vertex to vertex

Y
Y Electrical equipment ID for magnets / valves

Z
ZA Cylinder cutout
ZB Assembly drawing

Diverse
12V 595 TE 12 cylinder, series 595 engine
ºC Degrees centigrade
% Percent
Ω Ohm (sign for resistance)
µ Micro
+ Logic operation „OR“
x Logic operation „AND“

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 MTU Guide and abbreviations
:= Equivalent to
< Less than
> Greater than
⊥ Ground
“ Inch

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