6 Status messages
6.1 LEDs on the front of the device
EMS2… Electronic motor starter
10/19 MN034003EN
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41
Table 11:
Status messages – combination of four LEDs
LED
Status
Description
Reset
PWR
ERR
L / (–)
R / (ON)
Off
No control voltage U
S
present
–
Ready for operation
Control voltage U
S
present
–
Drive switched on
Counterclockwise operation (L)
–
Drive switched on
Clockwise operation (R or ON)
–
Internal error
Device needs to be replaced
Not possible
Motor protection tripped during
counterclockwise operation
Motor protection in cooling-down
phase,
reset not possible.
Manually after a cooling-down time
of approx. 2 min;
automatically after approx. 20 min
with a bridge between AUT and RES
Motor protection tripped during
counterclockwise operation
Cooling-down phase concluded,
manual reset possible
Manually after a cooling-down time
of approx. 2 min;
automatically after approx. 20 min
with a bridge between AUT and RES
Motor protection tripped during
clockwise operation
Motor protection in cooling-down
phase,
Reset not possible.
Manually after a cooling-down time
of approx. 2 min;
automatically after approx. 20 min
with a bridge between AUT and RES
Motor protection tripped during
clockwise operation
Cooling-down phase concluded,
manual reset possible
Manually after a cooling-down time
of approx. 2 min;
automatically after approx. 20 min
with a bridge between AUT and RES
Bad checksum
Error during system recovery. The ther-
mal memory of the motor protection
function is set to the maximum value.
The error must be manually acknowl-
edged in automatic mode.
Manual
Asymmetrical phase current
The currents in the phases deviate
from one another by more than 33%.
Manual
Motor is stalled
(counterclockwise operation)
The maximum measurable motor
current is exceeded for longer than 2 s.
Manual
Motor is stalled
(clockwise operation)
The maximum measurable motor
current is exceeded for longer than 2 s.
Manual
• Phase failure
• No motor connected
• Motor current < I
min
for longer
than 2 s
Error has occurred during counter-
clockwise operation. The power circuit
is still connected.
Automatic, as soon as the error has
been remedied
• Phase failure
• No motor connected
• Motor current < I
min
for more
than 2 s
Error has occurred during clockwise
operation. The power circuit is still
connected.
Automatic, as soon as the error has
been remedied
