➠
Inserting and removing connections, p. 16-69.H
After connection 2 has been removed, the crane control shows the rele-vant error message UNIT 2. You can acknowledge this error message.You can now carry out all crane movements connected with connections 0 and 1:
– putting down the load with the main and auxiliary hoist, – telescoping,
– derricking and
– moving the auxiliary drive units (counterweight lifting cylinder and locking pins, superstructure lock, tilt crane cab).
All drive units which are connected with connection 2 are now out of ope-ration (slewing gear and fast speeds).
If you need the slewing gear when unrigging, you must change the con-nections again.
Crane control main hoisting gear, auxiliary hoist gear (additional
equipment)
Telescoping gear, derricking gear, counterweight lifting
cylin-der and locking, cabin inclining, superstructure locking
Slewing gear, High-speed
H
Do not remove connection O, this connection serves the crane control and must always be inserted in an intact control unit. Depending on the requi-red crane movement, always insert either connection 1 or 2 in the intact control unit.You can thus carry out all crane movements for unrigging the truck crane after each other. There are only two ways in which the connections need to be inserted for a required crane movement:
either connections 0 and 1 (for main/auxiliary hoist, slewing gear and fast speeds) r connections 0 and 2 (for main hoist/auxiliary hoist,
derricking gear, telescoping gear superstructure lock,
Counterweight lifting gear and locking bolts, tilt cab)
H
As long as a connection is removed, the crane control shows thecorresponding malfunction (UNIT 1 or UNIT 2). You can acknowledge the malfunction for unrigging so that you can, for example, track the tele-scoping on the display.
Replace the defective control unit before the next job!
Crane control main hoisting gear, auxiliary hoist gear (additional
equipment)
Telescoping gear, derricking gear, counterweight lifting
cylin-der and locking, cabin inclining, superstructure locking
Slewing gear, High-speed
18.03.1999
Inserting and removing connections
All connections are equipped with plugs and safety holders.
• Turn the ignition off in the crane cab before you remove connections from or insert them in the control units.
S
Risk of malfunctions due to data loss!Always turn the ignition off in the crane cab before you remove con-nections from or insert them in the control units. If the ignition remains switched on, data necessary for the operation of the crane (e. g. the tele-scope status) can become lost or damaged.
If this data is not available there will be malfunctions during the next crane operation.
All connections are equipped with plugs and safety holders.
Removing connections
• Remove the holder (1) and then the plug (3) from the control unit (2).
Inserting connections
• Check if the holder (1) is pulled out.
• Put the plug (3) on the control unit (2).
• Push the holder (1) in until you hear it engage.
If a control lever is blocked because of a malfunction, theCrane control dis-play shows one of the two following messages in the third line:
J3501: 0 0 0 0 0 0 0 1 or J3502: 0 0 0 0 0 0 0 ;
➠
Error messages via drive units, p. 16-60.Indications on the display
ü
• Call up the menuControl lever emergency program on the Crane control display. To do this press the membrane switchControl lever emergency program once.In this menu you will see the message EMERGENCY PROGRAM in the first line.
In the second line the control lever to which the messages in the two lower lines refer (e. g. RIGHT CONTROL LEVER) is displayed.
ü
By repeatedly pressing the membrane switchControl lever emergencyprogramthe message alternates between the left and the right control lever.
The message X axis indicates the extension to the left and right.
The message Y axis indicates the extension forward and back.
If the emergency program for a control lever extension is switched on, ON appears next to the corresponding control lever extension.
The emergency program is switched on auto-matically with the displays of the error
message.
In the example illustrated here, the message ON is next to the Y axis of the right hand control lever. The functions which are controlled by extending this control lever forward or back are thus blocked. You can therefore carry out the main hoist functionslift and lower only with the emergency programme.
EMERGENCY PROGRAM RIGHT CONTROL LEVER X AXIS: OFF
Y AXIS: ON
EMERGENCY PROGRAM RIGHT CONTROL LEVER X AXIS: OFF
Y AXIS: ON
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Carrying out emergency program
To carry out the emergency program you must extend the defective control lever and also press a membrane switch.
ü
• Press the membrane switchControl lever emergency program until the defective control lever is indicated on the display.• Extend the control lever in the desired direction (e. g. the right hand lever forward – toLower the main hoist).
• Also press the corresponding membrane switch next to the display:
:
Press this membrane switch also when you have extended the control lever forward (in this example you would need to activate this switch).<
In addition, press the membrane switch when you have extended the control lever back.*
In addition, press the membrane switch when you have extended the control lever to the left.+
In addition, press the membrane switch when you have extended the control lever to the right.As soon as you activate the corresponding switch for extending the control lever, the crane movement (e. g. lower main hoist) starts.
• Let go of the switch or the control lever to stop the crane movement.
H
In the emergency program all crane movements are restricted to 10 % of the maximum speed.In the foot section of telescope sectionVthere is a proximity switch se-quence which monitors and switches off the extending of the telecoping cylinder when the telescoping cylinder is extended beyond the locking point of telescope section V. This prevents the telescoping cylinder being extended out of the guide mechanisms in the foot section and damaging the telescoping cylinder and telescope section.
If there is an error on this proximity switch sequence, the extending of the telescoping cylinder in telescope sectionVmust be especially monitored.
S
Damage may occur to the telescoping cylinder and telescope section!When theCrane control displayfor the telescoping gear displays the error message 0 0 0 0 0 0 0 1, the unintentional extension of the telescoping cy-linder is no longer automatically prevented.
If you still want to continue crane work be very careful when you move the telescoping cylinder in telescope sectionVand observe the following points.
With extended telescope sectionV
h
• Select locking immediately when you extend the telescoping cylinder to lock it in foot sectionV.g
• Reduce the speed to as low as possible with the control lever as soon as the position lightTelescoping cylinder in foot section V flashes.gh
• Monitor the locking process:
When the position lightTelescoping cylinder in foot section V lights up, the crane control locks the telescoping cylinder and the indicator lamp Telescoping cylinder locked lights up.
g
If the indicator lampTelescoping cylinder lockeddoes not light up and the indicator lamp Telescoping cylinder in foot section IVflashes again, stop the telescoping cylinder immediately.In this case the telescoping cylinder is extended beyond the locking point, can sling on the head of the telescope section and become damaged.
When the telescoping cylinder has extended beyond the locking point:
• Slowly retract the telescoping cylinder.
• Monitor the locking process again.
18.03.1999
When the main boom is fully retracted:
Vef
• Move the telescoping cylinder at the lowest possible speed through the foot sectionsItoIV, monitor the status of the telescoping cylinder on the position lightsTelescoping cylinder in foot sections I to IV.g
• When the position lightTelescoping cylinder in foot section V flashes, select the locking of the telescoping cylinder immediately.gh
• Monitor the locking process:
When the position lightTelescoping cylinder in foot section V lights up, the crane control locks the telescoping cylinder and the indicator lamp Telescoping cylinder locked lights up.
g
If the indicator lampTelescoping cylinder lockeddoes not light up and the indicator lampTelescoping cylinder in foot section Vflashes again, stop the telescoping cylinder immediately.In this case the telescoping cylinder is extended beyond the locking point and could be extended out of its guide rails and become damaged.
When the telescoping cylinder has extended beyond the locking point:
• Slowly retract the telescoping cylinder.
• Monitor the locking process again.
Emergency operation serves the purpose of allowing you to retract the main boom for on-road driving, so that the machine can be driven to a lo-cation where repair can take place.
Emergency operation is not designed for crane operation and therefore can be used only for a limited time.
Emergency operation is started only when the respective error message has been confirmed followed by entry of the correct key code in theAccess emergency operationsubmenu.
The submenu can be recognised by the messa-ge EMERGENCY OPERATION in the third line.
The remaining running time is displayed on the left in the fourth line (e.g. 180 secs.).
When the time has run out, the display swit-ches again to theAccess emergency operation submenu and you can re-start emergency operation.
The three-digit number code (e. g. 001) after the message STATUS in the second line indi-cates which error the crane control recogni-zed.
Deciphering the number code:
0 0 1: – Length indicator faulty
0 1 0: – Proximity switch faulty or signals received through locking status are unrealistic
1 0 0: – Error recognised in a valve for the locking mechanism, When multiple errors occur simultaneously, all errors are displayed simul-taneously with a 1 at the respective position.
H
If a 1 is displayed at the first position of the number code (e. g. 1 0 0), the locking and unlocking mechanism can no longer be operated. In this case, consult the responsible GROVE Product Support. If this error occurs, the main boom can only be retracted with the mechanical emergency operation, as described in the operating instructions.TELESCOPING STATUS: 0 0 1
EMERGENCY OPERATION
T: 180 s L:8.40 ft
TELESCOPING STATUS: 0 0 1
EMERGENCY OPERATION
T: 180 s L:8.40 ft
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G
Risk of damage to the main boom!Never telescope the main boom if both the length indicator and the proxi-mity switch have failed, i.e. with the number code 1 0 1 or 1 1 1. Other-wise you will no longer have any possibility to monitor and can damage components in the boom or put the boom in a condition in which it can no longer be extended.
S
Risk of damage to the main boom!Depending on which error has occurred, you can only track the telescop-ing with certain warntelescop-ing and indicator lights. Use as a guide only the lights which are stated for the respective error in the following sections.
If you observe the incorrect indicator and warning lights, boom compo-nents could be damaged or you could put the main boom in a condition in which telescoping is no longer possible.
When you are in the Emergency operation menu, all functions for tele-scoping in the main boom are still released as long there are no other er-rors (hydraulic or mechanical).
If the error is due to a proximity switch (number code 0 1 0);
➠
Retracting with an error on the proximity switch, p. 16-75.If the error is due to a length indicator (number code 1 0 0), retract the main boom as described in the following section:
Retracting with an error on the length indicator
If the error is on the length indicator, you can no longer read the extended length of the telescoping cylinder on theCrane control display.
The following status display elements are still available:
ihjj
Check the position of the locking pins of the telescoping cylinder and tele-scope section with the red warning/green indicator lampsTelescoping cylin-der unlocked and locked and Telescope section unlocked and locked.Vefg y
Check the position of the telescoping cylinder with the position lights telescoping cylinder in foot section I to V.
You can no longer read the extended length of the telescoping cylinder in thecrane control display.
Current telescope status of telescope section I to V.
H
To have the current extended length of the telescoping cylinder displayed by the SLI in theInformationdisplay, proceed as follows:n o
Press theEntry modemembrane switch and theHydraulic oil pressure of derricking cylinder lower chamber sensor Bmembrane switch.The displayInformationnow indicates the current extended length in feet of the telescoping cylinder.
The table on page 16-79 shows at which length the telescoping cylinder is at the locking points of the individual telescope sections.
Before telescoping:
V
– the telescoping cylinder must be in the foot section of the correspon-ding telescope section and the corresponcorrespon-ding position light must light up (e. g. for telescope sectionI);h
– the telescoping cylinder must be locked with the telescope section, the indicator lampTelescoping cylinder lockedmust light up;j
– the telescope section must be unlocked, the red warning lampTelescope section unlockedmust light up;.
– the rocker switchSelect locking/unlockingmust be pushed in the upper positionUnlock telescope section.Retracting the telescope section
S
Risk of damage to the main boom!As you are telescoping the telescope section, you must not activate the rocker switchSelect locking/unlocking. If you switch the rocker switch to the central position the locking pins on the telescope section are slid out im-mediately and they can damage or tear the electrical or hydraulic compo-nents in the main boom.
• Only telescope the telescope section slowly.
• Telescope in the telescope section as far as possible.
• Extend the locking pins on the telescope section by putting the rocker switchSelect locking/unlockingin the central position.
!= !=
!= != !=
2§6
18.03.1999
jj
The locking pins on the telescope section are slid out, the green indicator lampTelescope section lockedlights up and the red warning lampTelescope section unlocked goes out..
• Unlock the telescoping cylinder. To do this press theSelect locking/un-lockingrocker switch down.Extending the telescoping cylinder without the telescope section
S
Risk of damage to the main boom!As you are extending or retracting the telescoping cylinder, you must ne-ver operate the rocker switchSelect locking/unlocking.If you switch the rocker switch to the central position, the locking pins on the telescoping cylinder are slid out immediately and they can damage or tear the electri-cal or hydraulic components in the main boom.
• Extend the telescoping cylinder slowly.
e
• Extend the telescoping cylinder until it reaches the nearest foot section.
When the foot section is reached, the corresponding position light Tele-scoping cylinder in foot section I to Vlights up (e. g. for telescope sectionII) and
theInformation display shows the respective extended length of the tele-scoping cylinder (e. g. 16.3 ft for the locking point of telescope sectionII at 50%, values
➠
p. 16-79)S
Risk of damaging the telescoping gear!To check the position of the telescoping cylinder in relation to the locking point, always observe both display elements (indicator lamp and display Information).
In this way, you avoid going beyond the locking point and damaging the telescoping gear in case a display element fails (e. g. if the position light is faulty or if a proximity switch fails).
.
• When you have reached the locking point, lock the telescoping cylinder.To do this move the rocker switchSelect locking/unlockingto the central position.
h
When the telescoping cylinder is locked, the green indicator lamp Telesco-ping cylinder lockedlights up.1&3
H
current telescope status does not correspond with the last telescope sta-tus stored from the crane control. You must input the current telescoping status on theCrane controldisplay after repairs and before the next crane operation;➠
Enter telescope status after emergency operation menu, p. 16-80.Retracting with an error on the proximity switch
If the error is on a proximity switch of the locking pins, one or more of the following warning and indicator lamps no longer display the actual values:
i
– Warning lampTelescoping cylinder unlocked,j
– Warning lampTelescope section unlocked,h
– Indicator lampTelescoping cylinder locked,j
– Indicator lampTelescope section locked.When locking the telescoping cylinder, observe the following:
• Always move the telescoping cylinder to the correct length for the locking point be-fore you lock it with the telescope section.
The length is indicated on theCrane control display(e. g. 16.3 ft for the locking point of telescope sectionIIat 50%, values
➠
p. 16-78)• After locking, check that both locking pins are extended:
Carefully try to extend or retract the telescoping cylinder. If both locking pins are extended, the indicated length L must not change.
Otherwise, you can retract the main boom exactly as with an error on a length indicator (
➠
p. 16-78).H
Some warning and indicator lamps may show correct displays of the locking status. While locking and unlocking, you can check if individual lamps still display correctly.H
When there is an error on a proximity switch, the hydraulic/mechanical safety circuit continues to prevent the simultaneous unlocking of the tele-scope section and the telescoping cylinder, but this is no longerelectronically monitored.
– 0 – 0 – 0 – 0 – 0
TELESCOPING
EMERGENCY OPERATION L: 16.3 ft T. 180 s
18.03.1999
Table for approa-ching the locking points
The following table shows the extended length of the telescoping cylinder at the locking positions of the various telescope sections.
Telescope section Locking point at fixed length
[%]
Extended length of the telescoping
When you have retracted the main boom with the emergency operation, or when the power supply on the crane control is interrupted during the storage process, the indicated telescope status no longer corresponds with the actual status of the telescope sections.
In this case you must enter the actual telescope status in the crane control.
The menu is started:
Ä
– If you press theEnter telescope status after emergency operationmembrane switch three times (within about 3 seconds) orÖ
– If theDifferent telescope statuserror message was confirmed and the Display telescope status and teleautomaticmenu is selected.In the first line there is the message SET TELESCOPE STATUS.
In the second line there are telescope secti-ons T1 to T5 and in the line underneath the numerical value 0 is displayed for every tele-scope section.
In addition, the entry request (
●
) flashes on the numerical value for T1.You can enter the actual telescope status for every telescope section with the membrane switchesView and entry display, located to the right, next to the display.
You can only enter the value on which the entry request flashes.
+ *
• Press one of these two membrane switches as many times as necessary until the entry request flashes on the numerical value which you would like to enter.
> T1 < T2 – T3 – T4 – T5 SET TELESCOPE STATUS
>
●
< 0 – 0 – 0 – 018.03.1999
: <
• Enter the actual telescope status for the telescope section with these two membrane switches. The following values are available:
For T1 : 0 50 100 >n<
For T2 : 0 50 100 >n<
For T3 : 0 50 100 >n<
For T4 : 0 50 100 >n<
For T5 : 0 50 100 >n<
n here represents the displayed numerical value of the last saved current intermediate length (e. g. 37%)
H
If a telescope section is at an intermediate length, select the indicated va-lue n between the two angular brackets.• Enter the actual telescope status for all telescope sections.