Schneider Electric PM870, PM820, PM810, PM850 manual CT and PT ratings, System Type, Nominal

PowerLogicTM Series 800 Power Meter			63230-500-225A2
Chapter 10—Maintenance and Troubleshooting			3/2011
	Table 10–1: Troubleshooting
	Potential Problem	Possible Cause	Possible Solution
			Go to DIAGNOSTICS > MAINTENANCE.
	The maintenance icon is	When the maintenance icon is	Error messages display to indicate the
		illuminated, it indicates a potential	reason the icon is illuminated. Note these
	illuminated on the power
		hardware or firmware problem in the	error messages and call Technical
	meter display.
		power meter.	Support, or contact your local sales
			representative for assistance.
	The display shows error	Loss of control power or meter	Set date and time.
	code 3.	configuration has changed.
	The display is blank after		• Verify that the power meter line (L) and
	applying control power to	The power meter may not be	neutral (N) terminals (terminals 25 and
	the power meter.	receiving the necessary power.	27) are receiving the necessary power.
			• Verify that the heartbeat LED is
			blinking.
			Verify that the power meter is grounded as
		Power meter is grounded incorrectly.	described in “Grounding the Power Meter”
			in the installation manual.
			Check that the correct values have been
			entered for power meter setup parameters
		Incorrect setup values.	(CT and PT ratings, System Type, Nominal
			Frequency, and so on). See “Power Meter
	The data being displayed is		Setup” on page 13 for setup instructions.
			Check power meter voltage input terminals
	inaccurate or not what you
	expect.	Incorrect voltage inputs.	L (8, 9, 10, 11) to verify that adequate
			voltage is present.
			Check that all CTs and PTs are connected
			correctly (proper polarity is observed) and
		Power meter is wired improperly.	that they are energized. Check shorting
			terminals. See “Instrument Transformer
			Wiring: Troubleshooting Tables” on
			page 73. Initiate a wiring check using
			PowerLogic software.
			Check to see that the power meter is
		Power meter address is incorrect.	correctly addressed. See “COMMS
			(Communications) Setup” on page 15 for
			instructions.
			Verify that the baud rate of the power
		Power meter baud rate is incorrect.	meter matches the baud rate of all other
			devices on its communications link. See
			“COMMS (Communications) Setup” on
	Cannot communicate with		page 15 for instructions.
	power meter from a remote	Communications lines are improperly	Verify the power meter communications
	personal computer.		connections. Refer to the PM800-Series
		connected.	Installation Guide.
			Check to see that a multipoint
		Communications lines are improperly	communications terminator is properly
		terminated.	installed. Refer to the PM800-Series
			Installation Guide.
		Incorrect route statement to power	Check the route statement. Refer to your
			software online help or documentation for
		meter.
			instructions on defining route statements.

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