4 Device status and fault detection
4.1 Device status
Elektronischer Motorstarter EMS/Electronic Motor Starter EMS
04/15 MN03407009Z-DE/EN
www.eaton.com
51
Table 7:
Status LED state combinations and corresponding device statuses
State
Description
LED
Error acknow-
ledge
PWR
R/ON
L/-
ERR
Off
No supply voltage available
off
off
off
off
–
Operational readiness
Supply voltage available
on
off
off
off
–
Drive switched on
Anticlockwise operation (L)
on
off
on
off
–
Clockwise rotation (R)
on
on
off
off
–
Internal error
Internal fault –
The device needs to be replaced
on
off
off
on
not possible
External fault in control
section or peripherals
(requires servicing,
NE 44)
Bimetal function
The motor current is greater than the speci-
fied rated motor current (e.g., class 10A):
cool-down period in progress (20 minutes)!
An error has occurred during anticlockwise
operation.
on
off
on
flashing
automatic
1)
A fault occurred during clockwise rotation
on
on
off
flashing
automatic
1)
The L or R LED flashes after 2 minutes
elapse: A manual reset is required
An error has occurred at anticlockwise oper-
ation.
on
off
flashing
flashing
manual
A fault occurred during anticlockwise rota-
tion
on
flashing
off
flashing
manual
Error while attempting to determine the
system state: incorrect checksum
The bimetal function‘s thermal memory will
be set to the maximum value.
The error must be acknowledged manually
even during automatic operation.
on
flashing
flashing
flashing
manual
Balance
The motor currents are different from each
other by more than 33 %.
on
off
off
flashing
manual
Block
The maximum measurable motor current is
exceeded for more than 2 seconds.
The motor has stalled during anticlockwise
operation.
on
off
flashing
flashing
manual
The motor has stalled during clockwise oper-
ation.
on
flashing
off
flashing
manual
msg
(the power path remains
connected)
Message with control signal present
• Two or more phases are missing
• No connected motor
• The motor current is lower than the
minimum configurable current for more
than 2 seconds on at least two phases
The message is sent during anticlockwise
operation
flashing
off
on
flashing
automatic
2)
The message is sent during clockwise opera-
tion
flashing
on
off
flashing
automatic
2)
1) Link between RES and AUT terminals
2) No additional action required
