Safety and operating instructions
16 © Construction Tools GmbH | 3390 5149 01 | 2020-09-22
Original Instructions
LED 3
Yellow operation indicator
Quick demagnetization enabled. "Drop-
ping“.
LED lights up during the quick demag-
netization.
LED goes out when the quick demag-
netization is complete.
LED also goes out when the quick de-
magnetization is cancelled.
LED flashes when (advanced sorting)
has been requested by the operator, a
slow drop and thus decreases the mate-
rial very slowly and controlled.
Note: The magnet plate may for some
time have a remanent magnetism be-
cause the demagnetization proceeds
much more slowly.
LED 4
Red error indicator
Interruption / Error
LED lights up:
Interruption:
The magnet plate connection cable is
not plugged in or has been interrupted.
After switching on, the system checks
whether a current flows to the magnet
plate. If no current is flowing (Interrup-
tion), the magnet plate is automatically
switched off for security reasons after
about 1-2 seconds, and the LED lights
up.
LED goes out when the fault no longer
exists after the next restart.
LED flashes:
Error:
Error occuring in the connection be-
tween control center and display. The
display no longer responds.
LED 5
Red error indicator
Overload / System failure
LED lights up:
Overload:
The attached magnet plate is too large
for the system. The built-in overload and
fault current limiter of the system is ac-
tive. The LED remains on after restart.
LED does not go out until after the
next magnet plate switch on without de-
tection of an overload.
This error does not result in an auto-
matic shutdown of the magnet plate.
Note: Overload limiter active is a warn-
ing. This message is displayed only for
significant overload (>110%). However,
when shown, the suitability of the mag-
net plate for the system should be
checked.
LED flashes:
System failure:
A safety-critical error has occurred. The
output to the magnet plate is switched
off immediately.
LED goes out after a system restart.
Note: For error localization error blink
code can be read for generator systems.
Consult the Epiroc Customer Center /
dealer in your area.
LED 6
Red error indicator
Underspeed / Overspeed
LED lights up:
Underspeed:
The LED lights up to indicate that the
generator is running at underspeed. The
magnet plate is switched off automati-
cally.
LED goes out when the rotation speed
is back within the tolerance limits.
Note: At very low rotation speeds, it is
for security reasons no longer possible
to switch on the Hydro Magnet.
LED flashes:
Overspeed:
The generator is running at overspeed.
After dropping the load, no switching on
again is possible.
LED goes out when the rotation speed
is back within the tolerance limits.
Note: Too high rotation speeds can also
lead to system failure with diagnosis:
Overvoltage fault (error code: 10).
LED 7
Multi-coloured operation indicator
(50% green, 60% and 70% yellow,
from 80% red):
Relative duty cycle greater than or equal
to 80%The relative duty cycle of the
magnet plate is the ratio between be-
tween on-period and off-period. An on-
period of 1 minute and a following off-
period of 1 minute, for example, corre-
spond to a relative duty cycle of 50%. In
normal operation, the relative duty cycle
should be between 50% and 70%.
With a relative duty cycle of 80%, there
is a risk that the magnet plate over-
heats. To protect the magnet plate, re-
duce the on-period of the magnet plate
until the display is back to the normal
range between 50% and 70%.
Light sensor
Auto brightness control
To ensure that the display is always
easy to read, the brightness of the LEDs
is automatically adjusted with the help of
this sensor. The LEDs light, for exam-
ple, brighter in sunlight than in low light
conditions.
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