GE EPM 5200 Chapter Entering Programming Mode, Checksum Error-Protective Self-Checking Algorithms

CHAPTER 8: ENTERING PROGRAMMING MODE

CHAPTER 8

ENTERING PROGRAMMING MODE

8.1: Checksum Error—Protective Self-Checking Algorithms

This checksum error is a protective self-checking wealth algorithm designed to alert the user when a procedure has not been correctly followed, ensuring that the meter does not display inaccurate readings.

If the control power is interrupted while in Programming Mode or the user does not completely exit, the meter enters a checksum mode. The max LED flashes. Press AMPS and PHASE/NEXT simultaneously and the unit recovers. Follow the procedure to enter Programming Mode to check program data. If the data is correct, then exit.

8.2: Password Entry

The EPM 5300P and 5200P are password protected. To enter the Programming Mode, key in the following password: 555.

The password entry may seem awkward at first. It is designed to be difficult to use initially. This secures unauthorized tampering. After you become familiar with password entry, you will find it quick and easy to accomplish.

NOTE: The meter will not store any programming unless properly exited (see Chapter 14 to Exit).

Entering Programming Mode:

MAX			AC VOLTS
			A B C A B C
MIN			N N N B C A
LM1
LM2			AC AMPS
			A B C N
			POWER
			PF
			KW
			KVA
KVAH	KWH	FREQ	KVAR

MAX/MIN	VOLTS	AMPS	POWER	PHASE
LIMITS				NEXT

Step 1:

a.Press and hold PHASE/NEXT.

b.While holding PHASE/NEXT, press AMPS until a number appears in middle display. Then release both buttons.

!If 3 is not already displayed:

c. Press AMPS until 3 appears.

d. Press PHASE/NEXT to multiply the 3 to 333.

!333 flashes momentarily in middle display.

MAX	AC VOLTS
	A B C A B C
MIN	N N N B C A
LM1
LM2	AC AMPS
	A B C N
	POWER

PF

KW

KVA

KVAH KWH FREQ KVAR

MAX/MIN	VOLTS	AMPS	POWER	PHASE
LIMITS				NEXT

Step 2:

!Digits begin scrolling in upper display.

⌦The password is 555.

a. Press PHASE/NEXT each time the digit 5 appears.

!Selected digits appear in middle display.

MAX	AC VOLTS
	A B C A B C
MIN	N N N B C A
LM1
LM2	AC AMPS
	A B C N
	POWER

			PF
			KW
			KVA
KVAH	KWH	FREQ	KVAR
MAX/MIN	VOLTS AMPS	POWER	PHASE
LIMITS			NEXT

!Display blanks and PPP flashes in upper display, confirming a correctly entered password.

!PPP is replaced by 0. and the meter is now in Programming Mode, GROUP 0.

!You are now in the Programming Mode. CONGRATULATIONS!

GE Industrial Systems 5300P Advanced Power Meter 41