4 Device status and fault detection
4.2 Error acknowledgment
52
Elektronischer Motorstarter EMS/Electronic Motor Starter EMS
04/15 MN03407009Z-DE/EN
www.eaton.com
4.2 Error acknowledgment
There are three ways to acknowledge an error or fault:
•
Manually, using the Reset button
Pressing the Reset pushbutton on the front of the device will acknowl-
edge an error/fault. If the Reset pushbutton is still being pressed after a
time of approx. 2 seconds has elapsed, the electronic motor starter will
reassume its error condition. If the acknowledgment request is present
(i.e., if the Reset pushbutton is held down) for more than 6 seconds, an
expanded test will be performed on the power output stage and the
device will then switch to the “Parameter configuration“ operating
mode.
•
Manually, using a remote acknowledgment signal
A remote acknowledgment control section can be implemented by con-
necting a pushbutton (N/O) between the MAN and RES / A1 (24 V DC)
and RES terminals. An acknowledgment signal will be triggered as soon
as a positive edge is detected at the MAN input. If a negative edge is not
detected after a time of approx. 2 seconds elapses, the electronic motor
starter will reassume its error condition, as it will be impossible to rule
out tampering with or a defect in the acknowledgment circuit.
•
Automatic
If an electrical connection is established between the RES and AUT
terminals, the device will acknowledge errors and faults automatically
after the bimetal monitoring mechanism is actuated and the subsequent
cool-down period elapses.
DANGER
Please note that automatic restarts can result in bodily injury
and/or property damage!
The risk of an automatic restart exists when using the
“automatic reset“ operating mode (electrical connection
between RES – AUT terminals).
This automatic restart will occur after the cool-down period
elapses (20 minutes).
DANGER
Do not use the automatic restart function in explosion protection
applications!
