Manual MSD2
+
MA 2126
–A005 EN
38
9.1.2
Option „KS“
These LEDs indicate the status and error of the MSD2
+
power stage by colours:
LED
shines
Meaning
Basic position
(Zero Signal)
green
The output signal Basic position is
generated.
Overload
red
Overload error in the MSD2
+
: A short-
circuit over or between the motor phases
or towards GND or +U
B
has occurred.
Supply Failure
red
Supply voltage < 40 V or > 160 V
The supply voltage at the internal load
capacitor has dropped under 40 V.
An electronic current limitation or a not
adequate smoothing of the DC voltage
can be the reason for a short time
break of the supply voltage.
The rotatory energy is supplied back
as electric energy to the power stage.
Overvoltage in the internal load
capacitor will be the result. The error
message
“overload” can be caused by
operation with maximum power supply
(120 V), by motor mass inertia
(> 1.3 x 10
-4
kgm
2
) and high speed
(> 20 rev/s).
> 85 °C
red
The temperature at the heat sink of the
transistors is too high (> 85° C). The
power stage is powered off.
