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TOWER CRANE OPERATION AND SERVICE MANUAL
Symbol
Description
R
Hosting brake
resistance
XD2
PG
encoder
XD3
LVeM
Hoisting blower fan
RDMo
PTC
Hoisting thermistor
SDMo
LTS
Hoisting control
transformer
RDv
TSDi\TSDi1
FanDi\PLCDi
Small breaker
SDv
BS
thermostat
RDr
XKM
Hoisting main relay
SDr
KM
LFa
Symbol
Hosting main
contactor
Hosting brake
contactor
LO
LOW
Description
Joystick control trolley 2nd
switch
Joystick control trolley 3rd
switch
Reduction switch for fixed
radius
Switch for fixed load
variable radius
Trolley forward
deceleration switch
Trolley forward stop switch
Trolley backward
deceleration switch
Trolley backward stop
switch
Auto lubricating system
control button
Auto lubricating system oil
level switch
Auto lubricating system
cycle switch
Fan
Fan
S
PLC
Programmable
controller
DFa
Trolley brake contactor
X1\X2\X3
Obstacle light
DFaK
Trolley brake relay
MHR
Hoisting sensor
AOK
Auto lubricating system
relay
MDR
Trolley sensor
SD
Parallel connection relay
SLCL
Proving ring sensor
BZK
Buzzer relay
MONITOR
Indicator
LMM
Power supply for indicator
DFS
Trolley brake
DFV
Trolley FC converter
R
Trolley energy
consumption
resistance
XRGi1
Realy for weathvane effect
DM
Trolley motor
XRGi2
Relay for weathervane
effect
RFs1\ RFs2
Coil for slewing brake
TSR
Control transformer
4B-7
en-version 2.0