26.03.1996 • KHH SEENXL13A
•For Authorized KCI Service Agents Only•
KCI Hoists Corporation reserves the right to alter or amend the above information without notice
Page 12
XL
Service Manual
CU1
KCI KONECRANES GROUP
KCI HOISTS CORPORATION
8 Ready
6 Load
8 Ready
7 Brake7 Brake
8 Ready
is still allowed. (Hoisting motion is also prevented if a CU1 notices that the weight of
load is less than -20 %.)
The red Load-light is lit and the Ready-light (and the Remote-light) blinks as long as the
overloading situation exists (See Figure 7).
Normal display e.g: Overloading e.g:
(display in load mode) (Display in load mode)
(Lifting is prevented)
(lights)
(blinks)
Remote-light (blinks; option)
Figure 7: Indications of 'Load'.
3.7 Detection of the hoisting motor's brake wearing (Brake)
If CU1 detects an excessive wear of the hoisting motor's brake, CU1 shifts into a warning
state and the Brake-light as well as the Ready-light (and the Remote-light) start blinking.
Note that CU1 checks brake wearing only when hoisting motor is started.
A maximum of 100 starts is allowed during the warning period. If the brake is not
renewed the red Brake-light turns on and the hoisting motion will be prevented until the
brake has been renewed and (see Figure 8).
Note: The warning state will be cancelled after 10 starts with the renewed brake.
The brake wear sensor is a 'wire loop' inside the friction material of the hoisting motor's brake. If
the 'wire loop' is opened or if it contacts ground (PE), CU1 detects that the brake has worn out too
much and the brake should be renewed.
Warning period, max. 100 starts: Brake is not renewed during the warning
period:
(Brake wear sensor is cut off) (Brake wear sensor is cut off)
(Lifting is allowed) (Lifting is prevented)
(blinks) (lights)
after 100 starts
→
(blinks) (blinks)
Remote-light (blinks; option) Remote-light (blinks; option)
Figure 8: Indications of the 'Brake wearing'.
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