Power Logic

[aelectricalman]

Does anyone know what an alarm code P1LOG means on a power logic? I got the below information from the literature....


P - The Over Analog alarms will occur whenever the test register value is more positive than the pickup setpoint (or less negative) and remains greater than the pickup long enough to satisfy the pickup delay. When the value becomes less positive than the dropout setpoint (or more negative) and remains below the setpoint long enough to satisfy the dropout delay, the alarm will dropout. Pickup and Dropout setpoints can be positive or
negative, delays are in seconds.

Thanks in advance.

 

[templdl]

Does anyone know what an alarm code P1LOG means on a power logic? I got the below information from the literature....


P - The Over Analog alarms will occur whenever the test register value is more positive than the pickup setpoint (or less negative) and remains greater than the pickup long enough to satisfy the pickup delay. When the value becomes less positive than the dropout setpoint (or more negative) and remains below the setpoint long enough to satisfy the dropout delay, the alarm will dropout. Pickup and Dropout setpoints can be positive or
negative, delays are in seconds.

Thanks in advance.

Would it be correct then that neither the instruction manual nor the GE technical support could answer this question?

 

[aelectricalman]

Would it be correct then that neither the instruction manual nor the GE technical support could answer this question?

It's a Sq D product... The explanation I got was exactly from the manual and it too made zero sense. That except you saw above was it. I need some way to break this down into plain English so I thought I would reach out here, hoping there might be a power logic expert around.

 

[templdl]

It's a Sq D product... The explanation I got was exactly from the manual and it too made zero sense. That except you saw above was it. I need some way to break this down into plain English so I thought I would reach out here, hoping there might be a power logic expert around.

I pulls up a PDF of those instructions and they are as clear as mud. I would pound SqD for an actual applications engineer should you be lucky enught to have found one and pose this question to him. Is more less or less more or if it is less positive but more than negative. It may even be a positive maybe.

 

[aelectricalman]

I pulls up a PDF of those instructions and they are as clear as mud. I would pound SqD for an actual applications engineer should you be lucky enught to have found one and pose this question to him. Is more less or less more or if it is less positive but more than negative. It may even be a positive maybe.

Sounds to me like the sqrt(complicated) ^2 = complicated! thanks for the input.

 

[electric_cal]

Does anyone know what an alarm code P1LOG means on a power logic? I got the below information from the literature....


P - The Over Analog alarms will occur whenever the test register value is more positive than the pickup setpoint (or less negative) and remains greater than the pickup long enough to satisfy the pickup delay. When the value becomes less positive than the dropout setpoint (or more negative) and remains below the setpoint long enough to satisfy the dropout delay, the alarm will dropout. Pickup and Dropout setpoints can be positive or
negative, delays are in seconds.

Thanks in advance.

Got this from Square D Support. Hope it helps you.

PowerLogic Knowledge Base Procedure​

CM2 Clearing Alarms Front Panel.doc Rev:05/22/99 1 of 1​

?​

1999 Square D Company, All Rights Reserved​

Viewing and Clearing P1 Alarms from the CM2000 Front Panel​

Procedure​

1. Press the MODE button until the red LED next to ALARM glows steadily. The circuit monitor​

displays ?P1.Log.?
2. Press the Enter button to see which P1 alarms have not yet been cleared. To see if there is morethan one P1 alarm, press the blue arrow buttons. It will list different P1 alarms as you press thebutton.
3. Press the Enter button one time, and ?CLEAr? should be displayed.
4. We want to go into CLEAR Mode, so press the Enter button ONCE. The circuit monitor displays?CLr. No?.
5. To clear the log, press the up arrow button to change from ?CLr. No? to ?CLr.YES.? Then press theEnter button. The circuit monitor clears the P1 Log, and releases any latched relays IF THEALARM IS not STILL ACTIVE.
6. After clearing the P1 Log, the display should read ?AL.CodE?. Press the Enter Button to verifythere are no active alarms (it will say ?NONE-).​

7. Press the Enter button again to go to the P1.Log. Press Enter and the P1 Log should also say ?- NONE".

 

[jim dungar]

Is more less or less more or if it is less positive but more than negative. It may even be a positive maybe.

Is -99MW greater than 50MW?

The instructions are clear, if you read what is actually written.
Power can flow 'from the grid' and it can 'flow to the grid', therefore there is a need to define direction as well magnitude when comparing to values.
The OP instructions say the alarm is active when the measured valued is a more positive value (i.e. when graphed, it is to the right of the set point).