IPC402x-UM-2209-1-2.x.x (en)
Ensto Protrol AB
Phone: +46 31 45 82 00
Alfagatan 3
internet: www.protrol.se
431 49 Mölndal, SWEDEN
8
e-mail: [email protected]
The table beneath describes the other LED indicators on the front panel.
LED
Description
PWR
Green diode indicating that the device is powered up
RUN
Green diode normally flashing at 0.5 Hz frequency
EVNT
Yellow diode indicating that there is an unsent telegram in the queue for slave transmission
on the system interface
AUX
Yellow diode that normally indicates that the device is handling a frequency deviation
IRF
Red diode that indicates internal fault
USB
Yellow diode indicating a connected USB port
OC
Red diode indicating that an overcurrent has been detected
EF
Red diode indicating that an earth fault has been detected
Tx Master
Yellow diode indicating that a telegram is being sent on the serial master interface
Rx Master
Yellow diode indicating that a telegram is being received on the serial master interface
Tx Slave
Yellow diode indicating that a telegram is being sent on the serial slave interface
Rx Slave
Yellow diode indicating that a telegram is being received on the serial slave interface
Tx/Rx (USB)
Dual-coloured green-red diode which alternates when there is traffic on the USB port.
EX1
Yellow diode indicating that Detector 1 has identified a fault
EX2
Yellow diode indicating that Detector 2 has identified a fault
– applies to expanded device
EX3
Yellow diode indicating that Detector 3 has identified a fault
– applies to expanded device
EX4
Yellow diode that in normal configuration indicates start fault detection, detector 1-3
Some LEDs, such as AUX and EX1-4, can have other functionality for certain option choices.
4.1.1 Push-button for Local Acknowledge
There is a push-button, ACN, on the far right of the front panel for local acknowledge of the overcurrent
and earth fault indications, and factory reset. Remote acknowledge from the dispatch center and automatic
self-acknowledge after a configurable time delay are described in a separate chapter of this text manual.
4.2 Startup
After a restart of the device, i.e., if there has been a disturbance in DC supply or a restart has been ordered
from remote, inputs and outputs are updated with the current status. Any outputs that were activated
before the restart, return to inactive position unless the conditions for activation are valid.