3-29
1.4.5 OTHER MOMENT LIMITER FUNCTIONS
[1] WORKING ENVELOPE RESTRICTION WARNING
When the working envelope gets close to the set restriction value, a warning is issued to notify the
operator and people around of the situation.
The last status of the set value for the working envelope restriction is memorized even if the starter switch
is turned to the OFF position.
NOTES
See “Operation 1.4.4 [1] Descriptions of Switches on Moment Limiter Display Unit” for how to set the
value for working envelope restriction.
When the working envelope has been set, the restriction will be as
follows.
1. SAFETY ZONE
•
The appropriate working envelope restriction LED (red) lights
up.
•
Green of the working status lamp lights up.
2. PRE-WARNING
•
The appropriate working envelope restriction LED (red) lights
up.
•
The alarm sounds intermittently.
•
Yellow of the working status lamp lights up.
3. LIMIT WARNING
•
The appropriate working envelope restriction LED (red) lights
up.
•
Red of the working status lamp lights up.
•
The alarm sounds continuously.
•
The appropriate operation of the crane stops automatically.
[2] OVER HOIST DETECTOR
CAUTION
Pay attention to the distance between the hook and boom when raising the hook.
Extending the boom also raises the hook.
Always check the hook height when extending the boom.
When you overwind the hook when raising the hook or extending
the boom,
• The “Overwinding” LED (red) flashes.
• The alarm sounds continuously. (It stops sounding when the
operation lever is released.)
• The hook raising, boom extending and boom raising operation
stop automatically.
In case of auto stop, immediately perform the recovery operation.
Perform hook lowering and boom retracting operations as recovery
operations.
Summary of Contents for MC-174CRM
Page 2: ......
Page 8: ...0 6...
Page 60: ...2 38 31 Precautions for use portable card 101 2141000...
Page 62: ...2 40...
Page 77: ...3 15...
Page 117: ...3 55 5 Push the choke knob forward to return the original position...
Page 195: ...4 23...
Page 197: ...4 25...
Page 214: ...5 4 2 OVERALL DIMENSIONS...
Page 215: ...5 5 3 OUTRIGGER SPREAD DIMENSIONS...
Page 219: ...5 9 5 WORKING RANGE...
Page 220: ...5 10...
