MiCOM P921/P922/P923 - Schneider - error

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P92x/EN FT/H42Page 10/70Technical GuideUser GuideMiCOM P921/P922/P9231.1.4 LEDsThe LED labels on the front panel are by default written in English, however the userhas self-adhesive labels available with MiCOM relays on which it is possible to writeusing a ball point pen.The top four LEDs indicate the status of the relay (Trip condition, alarm LED,equipment failure, auxiliary supply).The four lower LEDs are freely programmable by the user and can be assigned todisplay a threshold crossing for example (available for all models) or to show thestatus of the logic inputs.The description of each one of these eight LEDs located inthe left side of the front view is given hereafter (numbered from the top to bottomfrom 1 to 8):LED 1LED 8P3951ENaLED 1 Colour: RED Label: TripLED 1 indicates that the relay has issued a trip order to the cut-off element (circuitbreaker, contactor). This LED recopies the trip order issued to the Trip logic output.Its normal state is unlit. As soon as a triggering order is issued, the LED lights up. Itis cleared when the associated alarm is acknowledged either through the frontpanel, or by a remote command, a digital input, or by a new fault(CONFIGURATION/Alarms menu).LED 2 Colour: ORANGE Label: ALARMLED 2 indicates that the relay has detected an alarm. This alarm can either be athreshold crossing (instantaneous), or a trip order (time delayed). As soon as analarm is detected, the LED starts blinking. After all the alarms have been read, theLED lights up continuously.After acknowledgement of all the alarms, the LED is extinguished.The alarm LED can be reset either through the front panel, or by remote command,by a digital input., etc.LED 3 Colour: ORANGE Label: WarningLED 3 indicates internal alarms of the relay. When the relay detects a « noncritical » internal alarm (typically a communication failure), the LED starts blinkingcontinuously. When the relay detects a fault that is considered as « critical », theLED lights up continuously. Only the disappearance of the cause of the fault canclear this LED (repair of the module, clearance of the Fault).
Technical GuideP92x/EN FT/H42User GuideMiCOM P921/P922/P923 Page 11/70LED 4 Colour: GREEN Label: HealthyLED 4 indicates that the relay is powered by an auxiliary source at the nominalrange.LED 5 to 8 Colour: RED Label: Aux.1 to 4.These LEDs are user programmable and can be set to display information aboutinstantaneous and time-delayed thresholds as well as the status of the logic inputs.Under the CONFIGURATION/LED menu of the relay, the user can select theinformation he wishes to associate with each LED. He can affect more than onefunction to one LED. The LED will then light up when at least one of the associatedinformation is valid (OR gate). The LED is cleared when all the associated alarmsare acknowledged.1.1.5 Description of the two areas under the top and bottom flaps1.1.5.1 Relay IdentificationUnder the upper flap, a label identifies the relay according to its model number(order number) and its serial number. This information defines the product in a waythat is unique. In all your requests, please make reference to these two numbers.Under the model and serial number, you will find information about the level ofvoltage of the auxiliary supply and the nominal earth current value.1.1.5.2 Lower flapUnder the lower flap, a RS232 port is available in all MiCOM relays. It can be usedeither to download a new version of the application software version into the relayflash memory or to download/retrieve settings plugging a laptop loaded with MiCOMS1 setting software.To withdraw more easily the active part of the MiCOM relay (i-e the chassis) from itscase, open the two flaps, then with a 3mm screwdriver, turn the extractor locatedunder the upper flap, and pull it out of its case pulling the flaps towards you.1.1.6 The USB/RS232 cable (to power and set the relay)The USB/RS232 cable is able to perform the following functions:1. It is able to power the relay from its front port. This allows the user to view or modifydata on the relay even when the auxiliary power supply of the relay has failed or whenthe relay is not connected to any power supply. The USB port of the PC supplies thepower necessary to energize the relay. This lasts as long as the battery of the PC canlast.2. It provides an USB / RS 232 interface between the MiCOM relay and the PC. Thisallows the user to be able to change the setting of the relay using a PC with its USBport.It eases the use of the relay allowing the retrieval of records and disturbance files forexample when the auxiliary supply has failed or is not available.The associated driver (supplied with the relay) needs to be installed in the PC. Formore information, refer to MiCOM E2 User Guide.
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MiCOMP921/P922/P923Voltage and Freq
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MiCOM P921/P922/P923 - Schneider - error

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