GE EPM 5350, EPM 5300, EPM 5200 User Manual

EPM 5200, 5300, 5350

DIGITAL MULTIFUNCTION POWER MONITORS

Instruction Manual

GEK-106557A

Copyright © 2004 GE Multilin

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	GE Industrial Systems
NORTH AMERICA	EUROPE
215 Anderson Avenue, Markham, Ontario, L6E 1B3 Canada	Avenida Pinoa 10 – 48710, Zamudio (Vizcaya) Spain
Tel: [phone] Fax: [phone]	Tel: [phone] Fax: [phone]
E-mail: [e-mail]
Internet: http://www.GEindustrial.com/multilin

TABLE OF CONTENTS

CHAPTER 1: AC POWER
MEASUREMENT .............	1
1.1: Single Phase System................	1
1.2: Three-Phase System ................	2
1.3: Consumption, Demand and
Poor Power Factor....................	3
1.4: Waveform and Harmonics ........	4
CHAPTER 2: MECHANICAL
INSTALLATION ...............	5
CHAPTER 3: ELECTRICAL
INSTALLATION ...............	7
3.1: Current Circuit...........................	7
3.2: CT Connection..........................	7
3.3: Voltage Circuit...........................	8
3.4: Selecting the Voltage Fuses .....	8
3.5: Connection to the Main Power
Supply .......................................	8
3.6: Electrical Connection
Installation.................................	8
3.7: Relay, Protection and Pulse
Output .......................................	14
3.8: KYZ Pulse Outputs: NL2
Option .......................................	15
CHAPTER 4: COMMUNICATION
INSTALLATION ...............	17
4:1: RS-232C ...................................	17
4.2: RS-485......................................	17
4.3: Network and Long Distance
Communication.........................	20
CHAPTER 5: OVERVIEW .........................	23
5.1: Accessing the Power
Functions ..................................	24
5.2: Accessing Voltage and
Current Phases.........................	24
5.3: Accessing %THD Functions .....	24
5.4: Viewing Individual Phase
Indication for Power
Functions .................................	25
5.5: Accessing Max/Min Values.......	26
5.6: Resetting Values.......................	26
5.7: Resetting Hour Readings..........	28

5.8: Accessing the LM1/LM2
Set Limits..................................	28
5.9: Voltage Phase Reversal and
Imbalance ................................	29
5.10: Access Modes ........................	30
5:11: Print Operating Data...............	30
5.12: Print Programming Data.........	31
5.13: Accessing Firmware
Version/LED Test ...................	31
CHAPTER 6: OVERVIEW.........................	33
6.1 General Procedure ....................	33
6.2: Switch Packs ............................	33
6.3: Data Entry.................................	34
6.4: Standard Numeric Data Entry...	34
CHAPTER 7: EPM 5200P......................	35
CHAPTER 8: ENTERING THE
PROGRAMMING MODE ...	37
8.1: Checksum Error—Protective
Self-Checking Algorithms .........	37
8.2: Password Entry ........................	37
CHAPTER 9: PROGRAMMING GROUP 0:
GLOBAL METER SETUP . 39
9.1: Group 0, Function 0
The Integration Interval.............	39
9.2: Group 0, Function 1—
The Meter Address ...................	40
9.3: Group 0, Function 2—
BAUD RATE .............................	41
9.4: Group 0, Function 3—
System Configuration ..............	42
9.5: Modbus Plus Capability............	44
9.6: Group 0, Function 3—
Programming Procedure ..........	45
9.7: Relay Mode ..............................	46
9.8: Group 0, Functions 4–5—Time
Delay for Relays 1 and 2
(Option – NL) ............................	49
9.9: Group 0, Function 6—KYZ
Parameter Selection ................	51
9.10: Group 0, Function 7—
Number of Phases....................	54

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EPM 5000 series Advanced Power Meters

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CHAPTER 10: PROGRAMMING GROUP 1:
VOLTAGE, AMP AND WATT
SCALE SETTINGS.........	55
10.1: Group 1, Function 0—Full
Scale Voltage Settings, Scale
Factor & Decimal Point
Placement ...............................	55
10.2: Group 1, Function 1—
Amperage Full Scale...............	58
10.3: Group 1, Function 2—Scale
Selection and Decimal
Placement for Watts................	59
CHAPTER 11: PROGRAMMING GROUP 2:
METER CALIBRATION .......	63
11.1: Calibration Requirements .......	63
11.2: Group 2, Functions 0–8—
High End Calibration of Voltage
Channels, High and Low End
Calibration of Amperage
Channels.................................	64
CHAPTER 12: GROUPS 4, 5 AND 6: SET
LIMITS AND RELAYS ...	67
12.1: Trip Relay................................	67
12.2: Time Delays & Relay Mode ....	67
12.3: Group 4, Functions 0–3—
LM1/LM2 Set Limits ................	68
12.4: Group 5, Functions 0–7—
LM1/LM2 Set Limits ................	69
12.5: Group 6, Functions 0–5—
LM1/LM2 Set Limits and
Relay Triggers for Over/Under
%THD Conditions ...................	72
12.6: Limits or Relays Programming
Procedure ...............................	72
CHAPTER 13: PHASE REVERSAL
AND PHASE IMBALANCE
SET LIMITS/RELAYS..........	75
13.1: Phase Reversal and Phase
Imbalance ...............................	75
13.2: Trip Relay................................	75
13.3: Group 7, Function 0—Voltage
Phase Reversal Detection ......	76
13.4: Group 7, Function 1—
Percentage Voltage Phase
Imbalance ...............................	77

CHAPTER 14: EXITING THE PROGRAMMING
MODE .............................	79
CHAPTER 15: PROGRAMMING QUICK
REFERENCE………………81
15.1: Entering the Programming
Mode ......................................	81
15.2: Data Entry Sequence .............	81
15.3: Programming Groups .............	81
15.4: Group 0: Global Setup............	82
15.5: Group 1: Full Scale Setup ......	83
15.6: Group 2 Calibration ................	83
15.7: Group 3 Calibration Ratios .....	83
15.8: Group 4: Volt/Current Limits...	83
15.9: Group 5: Power Function Limits
.........................................................	84
15.10: Group 6: THD Limits.............	84
15.11: Group 7 Imbalance/Reversal
Limits ....................................	84
15.12: Group 8: DC Output
Calibration ............................	84
CHAPTER 16: ETHERNET OPTION .........	87
16.1: Ethernet Module
...............................................	87
16.2: Ethernet Option Setup............	88
16.3: Default IP Address…………….89
16.4: AutoIP…………………………..89
16.5: Setting the IP Address………..89
16.6: Network Configuration………..90
16.7: Configuration Parameters…….91

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EPM 5000 series Advanced Power Meters

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CHAPTER 1: AC POWER MEASUREMENT

CHAPTER 1

AC POWER MEASUREMENT

The economics of electric power distribution networking dictate several configurations of AC power transmission. The number of phases and voltage levels characterize these configurations.

1.1: Single Phase System

A single phase system is a basic two-wire system used in low power distribution applications, such as residential communities or offices. Typically, the voltage is 120V AC. For higher power requirements, such as small commercial facilities, the typical power configuration is two lines of 120V AC opposite in phase (see Figure 1.1 B, below).

This system produces 120 volts from line to neutral for lighting and small appliance use. The line-to-line voltage is 240V AC, used for higher loads such as water heaters, electric dryers, ranges and machinery.

Line

A)

Single Phase

2 Wires

Neutral

Line 1

	B)
	Single Phase	Neutral
	3 Wires

Line 2

Figure 1.1: Single Phase System: (A) Two-Wire, (B) Three-Wire

The power (W) in a single phase system is: W =E • I• cosΘ

E = potential, I = current, and cosΘ = phase difference between the potential and the current. Power in a 120/240V AC system is: W = (ELine1 • ILine1 • cosΘ) + (ELine 2 • ILine 2 • cosΘ)

Phase differential between the potential and the current results from a non-resistive load, either reactive or capacitive.

Reactive power (VAR): The additional power consumed that does not produce any work but must be delivered to the load: VAR = E I sinΘ . This is a measure of the inefficiency of the electrical system.

Apparent power (VA): The total power delivered to the load, and the vector sum of real power and reactive power.

Power Factor (PF): The ratio between real power and apparent power: PF =	W	=	W
	VA		W 2 + VAR2

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Apparent Power (VA)	Reactive
	Power
	(VAR)
Real Power (W)

Figure 1.2: Relationship between apparent, real and reactive power

Ideal power distribution should have a PF of 1. This condition can be met only if no reactive power loads exist. In real life applications, many loads are inductive loads. Often, corrective capacitors are installed to correct Poor Power Factor (see Section 1.3).

1.2: Three-Phase System

A three-phase system delivers higher levels of power for industrial and commercial applications; the three phases correspond to three potential lines. A 120° phase shift exists between the three potential lines.

A typical configuration has either a Delta connection or a Wye connection (see Figure 1.3, below).

In a three-phase system, the voltage levels between the phases and the neutral are uniform and defined by:

Ean = Ebn = Ecn = Eab3 = Ebc3 = Eac3

A

1) Delta

B

C

A B

2) Wye

N

C

Figure 1.3: Three-Phase System: (1) Delta, (2) Wye

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CHAPTER 1: AC POWER MEASUREMENT

Voltages between the phases vary depending on loading factors and the quality of distribution transformers. The three-phase system is distributed in different voltage levels: 208V AC, 480V AC, 2400V AC, 4160V AC, 6900V AC, 13800V AC, and so on.

Power measurement in a poly phase system is governed by Blondel's Theorem. Blondel’s Theorem states that in a power distribution network which has N conductors, the number of measurement elements required to determine power is N-1. A typical configuration of poly phase system has either a Delta connection or a Wye connection (see Figure 1.4, below).

A

X

EAB IA

1) Delta

P = EAB IA + ECB I C

C

B

X

ECB I C

X

EAN I A

A

B

2) Wye

X

EBN I B

N

P = E

I

+

E

I

+

E

I

A

BN

B

CN

C

AN

C

X

ECN I C

Figure 1.4: Poly Phase System: (1) Delta, (2) Wye

1.3: Consumption, Demand and Poor Power Factor

CONSUMPTION: WH = W × T W = instantaneous power T = time in hours The total electric energy usage over a time period is the consumption of WH.

Typically, the unit in which consumption is specified is the kilowatt-hour (KWH): one thousand watts consumed over one hour. Utilities use the WH equation to determine the overall consumption in a billing period.

DEMAND: Average energy consumed over a specified time interval. The utility determines the interval, typically 15 or 30 minutes. The utility measures the maximum demand over a billing period. This measurement exhibits a deviation from average consumption, causing the utility to provide generating capacity to satisfy a high maximum consumption demand. The highest average demand is retained in the metering system until the demand level is reset.

POOR POWER FACTOR: Results in reactive power consumption. Transferring reactive power over a distribution network causes energy loss. To force consumers to correct their Power Factor, utilities monitor reactive power consumption and penalize the user for Poor Power Factor.

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CHAPTER 1: AC POWER MEASUREMENT

1.4: Waveform and Harmonics

Ideal power distribution has sinusoidal waveforms on voltages and currents. In real-life applications, where inverters, computers, and motor controls are used, distorted waveforms are generated. These distortions consist of harmonics of the fundamental frequency.

SINUSOIDAL WAVEFORM: A • sin (ω t)

DISTORTED WAVEFORM: A • sin(ω• t) + A1 • sin(ω1 • t) + A2 • sin(ω2 • t) + A3 • sin(ω3 • t) +L

TOTAL HARMONIC DISTORTION (THD):

% of THD =	RMS of Total Harmonic Distortion Signal	× 100
	RMS of the Fundamenta l Signal

HARMONIC DISTORTION: A destructive force in power distribution systems. It creates safety problems, shortens the life span of distribution transformers, and interferes with the operation of electronic devices. The Futura+ monitors the harmonic distortion to the 31st harmonic. A waveform capture of distorted waveform is also available.

% THD GRAPH

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CHAPTER 2: MECHANICAL INSTALLATION

CHAPTER 2

MECHANICAL INSTALLATION

These diagrams display the various possible mechanical installations and Communication Converter installation. The various models use the same hookup and installation.

							4.50
							SQ.
MAX			AC VOLTS
MIN			A B C		A	B	C
			N N N		B	C	A
LM1
MAX			AC AMPS
THD
K				A B C N
				POWER
					PF		2.0
					KW
					KVA
KVAH	KWH		FREQ		KVAR
MAX/MIN	VOLTS	AMPS	POW ER	PHASE			3.0
LIMITS				NEXT
		4.375					0.890
		SQ.

Diagram 2.1: Standard installation

3.50					3 FOOT CABLE
				0.80
MAX		AC VOLTS
MIN		A B C A B C
		N N N B C A
LM1
LM2			AC AMPS	4.50
THD			A B C N
K				SQ.
			POWER
			PF		0.336
			KW
			KVA
KVAH	KWH	FREQ	KVAR
MAX/MIN			PHASE		2.45
	VOLTS AMPS	POWER		2.425
LIMITS			NEXT
	4.375		0.890	(4) 8-32 SCREWS	0.714
	SQ.
				5.00

Diagram 2.2: Installation with K-110 option for limited space conditions

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SIDE VIEW

	(4) 8-32 SCREWS	FIRST PUT (16) PIN
		CONNECTOR TOGETHER.

0.80

RECOMMENDED

CUTOUT

0.198 DIA.

1.6875

(2) 8-32 SCREWS WILL LINE UP WITH 2 PEMS ON THE BACK PLATE.

4.0 DIA.	3.375

1.6875

3.375

BACK VIEW

Diagram 2.3: Standard cutout

W Port

Diagram 2.4: Optional Communication Converter or DC Output Module Installation * Recommended wire gauge is 20 AWG for DC Output or RS-485 options.

Note: Carefully line up the guide screw and 8 pin port connector to prevent pin breakage.

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CHAPTER 3: ELECTRICAL INSTALLATION

CHAPTER 3

ELECTRICAL INSTALLATION

3.1: Connecting the Current Circuit

Install the wiring for the current at 600V AC insulation as a minimum. The cable connector should be rated for 6 Amps or greater and have a cross-sectional area of 16 AWG minimum.

Mount the current transformers (CTs) as close as possible to the meter for best accuracy. The following table illustrates the maximum recommended distances for various CT sizes, assuming the connection is via 16 AWG cable.

CT Size	Maximum Distance (CT to Meter)
2.5 VA	10 FEET
5.0 VA	15 FEET
7.5 VA	30 FEET
10.0 VA	40 FEET
15.0 VA	60 FEET
30.0 VA	120 FEET

Table 3.1: CT Size and Maximum Distance

WARNING:

DO NOT leave secondary of the CT open when primary current is flowing. This causes high voltage that will overheat the secondary of the CT. Use a shorting block on the secondary of the CT.

3.2: CT Connection

If the meter is connected directly to the current (up to 10 Amps max.), maintain the exact connection to avoid incorrect polarity.

When the meter is connected using the CTs, you must maintain the correct CT polarities. CT polarities are dependent upon correct connections of CT leads, and upon the direction the CTs are facing when clamped around conductors. The dot on the CT must face the line side; the corresponding secondary connection must connect to the appropriate input on the meter. Failure to connect CTs properly results in inaccurate power readings. If your meter is not reading power properly, it is more than likely the CT is incorrectly wired.

Note: CTs are shorted if connected to the terminal block model DSP2 or 3 even if it is detached from the meter.

HELPFUL DEBUGGING TOOLS

OPTION 1: ISOLATING A CT CONNECTION REVERSAL POWER READING

If your meter does not read the correct watts after installation, it almost always means that the CT’s have been wired in the wrong polarity. To check the polarity of the CT after the monitor has been installed, look at the single phase WATT readings to see that each of the readings are positive (assuming you are consuming power). If one of the WATT readings is negative, that particular phase CT is reversed.

To check the single phase WATT reading, press the Power button twice while the annunciator is positioned to WATTS. Then press the Phase/Next button to cycle through the phases. After connecting the polarity of the CTs, the WATT and VAR readings should be correct.

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OPTION 2: ISOLATING A CT CONNECTION REVERSAL USING VOLTAGE READINGS

!Remove potential connections to terminals 6 and 7. Observe the KW reading. It should be positive.

!If negative, reverse the CT wires on terminals 8 and 9.

Connect terminal number 6 potential. If KW decreases to about zero, reverse CT wires on terminals 10 and 11.

Connect terminal number 7 potential. If KW is one-third of expected reading, reverse CT wires to terminals 12 and 13.

3.3: Connecting the Voltage Circuit

For proper meter operation, the voltage connection must be maintained. The voltage must correspond to the correct terminal.

The cable required to terminate the voltage sense circuit should have an insulation rating greater than 600V AC and a current rating greater than 0.1 A.

3.4: Selecting the Voltage Fuses

We strongly recommend using fuses on each of the sense voltages and the control power, although connection diagrams do not show them. Use a 1 Amp fuse on each voltage input.

The meter can handle a maximum voltage of 150V phase to neutral. PTs are required for higher voltages. Suffix -G extends the maximum direct voltage to 300V phase to neutral, 600 volt phase to phase.

3.5: Connection to the Main Power Supply

The meter requires separate control power to operate. Listed are the five different power supply options and corresponding suffixes.

CONTROL POWER	OPTION SUFFIX	CURRENT
120V AC	115 A	0.1 AAC
240V AC	230 A	0.05 AAC
12V DC	D4	0.10 ADC
24-48V DC	D	0.25-0.5 ADC
125V AC/DC (universal)	D2	0.10 AAC or DC

Table 3.2: Control Power and Current

Note: For DC-powered units, polarity should be observed. Connect the negative terminal to L and positive terminal to L1. An earth ground connection to chassis is mandatory for normal operation (terminal three). Do not ground the unit through the negative of the DC supply.

Note: Externally fuse power supply with a slow-blow 3 Amp fuse.

3.6: Electrical Connection Installation

Choose the diagram that best suits your application and maintain the CT polarity. Follow the outlined procedure to verify correct connection. IMPORTANT: For PT connections only, short terminals 3 and 4. Connect local ground to terminal 3. This protects the unit from spikes and transients.

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CHAPTER 3: ELECTRICAL INSTALLATION

•The meter and terminal module DSP3 are factory calibrated together; the serial numbers are matched on both. The DSP3 input module and the meter base MUST MATCH!

•Mismatching of the meter and DSP3 input module will cause inaccurate readings because calibration ratios are stored in the meter’s memory, not in the DSP3 input module.

LIST OF CONNECTION DIAGRAMS

NOTE: See phase reversal if a message of CBA appears after installation.

IThree-Phase, Three-Wire System Delta with Direct Voltage and CTs

IIThree-Phase, Three-Wire Open Delta with two CTs and two PTs

(Open Delta System should only be used if the electrical system is a 3-wire 2 PT OPEN DELTA Open Delta can be enabled or disabled in Programming GROUP 0, FUNCTION 3, Chapter 9, section 9.4)

III Three-Phase, Three-Wire Open Delta with three CTs and two PTs

IV Three-Phase, Four-Wire Wye with Direct Voltage and CTs

V Three-Phase, Four-Wire Wye with CTs and PTs

VI Single Phase with CT and PT Connection

VII Dual-Phase System

VIII Three Phase System

	LINE					BACK VIEW
A	B	C
				7	8	9	10	11	12	13
				6
				5		PORT
				4
				3
		CONTROL	+	2	L1
		POWER
	LOAD
			-	1 L

I. Three Phase, Three-Wire System Delta with Direct Voltage and CTs

Note: Remember to make sure Open Delta bit is programmed in the meters (See Chapter 9).

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EPM 5000 series Advanced Power Meters

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CHAPTER 3: ELECTRICAL INSTALLATION

	LINE		BACK VIEW
A	B	C
			7	8	9	10	11	12	13
			6
			5			PORT
			4
			3
		+	2L1
	LOAD	POWER
		-	1 L

II. Three-Phase, Three-Wire Open Delta with two CTs and two PTs

Note: Remember to make sure Open Delta bit is programmed in the meter (see section 9.4).

	LINE		BACK VIEW
A	B	C
			7 8	9	10	11	12	13
			6
			5	PORT
			4
			3
		+	2 L1
	LOAD	POWER	1 L
		-

III. Three-Phase, Three-Wire Open Delta with three CTs and two PTs

Note: Remember to make sure Open Delta bit is programmed in the meter (see Chapter 9).

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CHAPTER 3: ELECTRICAL INSTALLATION

	LINE				BACK VIEW
N	A B	C
				7	8	9	10	11	12	13
				6
				5			PORT
				4
				3
		CONTROL	+	2	L1
		POWER
	LOAD
			-	1	L

IV. Three-Phase Four-Wire Wye with Direct Voltage and CTs

	LINE				BACK VIEW
N	A	B	C
				7	8	9	10	11	12	13
				6
				5		PORT
				4
				3
			+	2 L1
			POWER
	LOAD		-	1 L

V. Three Phase Four-Wire Wye with CT and PTs

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CHAPTER 3: ELECTRICAL INSTALLATION

The EPM 5300P-S

The EPM 5300P -S is essentially the 5300P, where through the Programming Mode calculations are changed to reflect either Single Phase or Dual Phase readings.

Single Phase—The connection MUST be identical to Diagram VI.

Dual Phase—The connection MUST be identical to Diagram VII.

Program 1 for Single Phase or 2 for Dual Phase in GROUP 0, FUNCTION 7 to remove Three-Phase indicators from view.

LINE			BACK VIEW
A
		7	8	9	10	11	12	13
		6
		5			PORT
		4
		3
	+	2	L1
LOAD	POWER
	-	1 L

VI. Single Phase with CT and PT Connection

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CHAPTER 3: ELECTRICAL INSTALLATION

LINE				BACK VIEW
A	B
			7	8	9	10	11	12	13
			6
			5		PORT
			4
			3
		+	2 L1
LOAD		POWER	1 L
		-

VII. Dual-Phase with CTs and PTs

	LINE
N	A	B	C			BACK VIEW
					7	8	9	10	11	12	13
					6
					5		PORT
					4
					3
			CONTROL	+	2	L1
	LOAD		POWER	-	1	L

VIII. Three-Phase Four-Wire WYE with 2.5 Element

Note: The 2.5 element option must be custom configured from the factory. You must pre-order this configuration.

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3.7: Relay, Protection and Pulse Output

(This section applies only to the -NL or -NL2 Relay Option.)

EPM 5300P RELAY OVERVIEW

The EPM 5300P offers dry contact relay output capability. The EPM 5200P only offers KYZ pulse outputs and cannot be configured to trip contacts on events.

FAIL-SAFE MODE: The EPM 5300P -NL option gives the user an adjustable tripping bandwidth. The user specifies a range over which functions, such as frequency, phase relation and voltage, are acceptable. The relay releases during times of normal operation, and engages when functions are outside specified normal levels. The relay can be programmed to engage during normal operating conditions, and release outside specified normal range (particularly when power is lost). This is the fail-safe mode.

HYSTERISIS: The EPM 5300P -NL option also includes adjustable hysterisis. In addition to a time delay on activating any contact, the user may specify a lower level to release the relay, rather than releasing after the initial alarm point. This is ideal during load shedding when an alarm activates at a certain level and the user does not want to turn off the alarm until a much lower, safer level.

SETABLE DELAYS: After reaching the alarm point, a change in relay status may be delayed for 255 seconds. The user also has the option of allowing the device to change relay status without any delay. After the alarm condition passes, the relay can be stopped from returning to a normal condition for a programmable time. Each delay time is independent of one another.

AND/OR LOGIC: If several parameters are assigned to one relay, the user can trip the relay if all functions are out of limit (and programming), or if one function is out of limit (or programming). For example, if limits on Voltage, Kilowatts, and Phase Imbalance are programmed and tied to Relay 1, the user can either trip the relay if one function is out of limit, or if all functions are out of limit.

2 RELAYS & 1 KYZ PULSE OUTPUT -NL OPTION

The EPM 5300P's flexibility accesses a variety of relay options through the Programming Mode (see programming sections). The relay option package consists of three relays: two can be dedicated to alarm or controlled through communication (or both) and one for KYZ pulse output.

If the relays are controlled through communication, there are two different modes:

	Lock ON	Relay will not be affected by any alarm condition.
	Lock OFF	Relay will not be affected by any alarm condition.

If the relays are used for communication and alarm, there are four different modes:

	Lock ON	Relay stays on regardless of any alarm condition.
	Lock OFF	Relay stays off regardless of any alarm condition.
	Free ON	Relay turns on unless other conditions force it off.
	Free OFF	Relay turns off unless other conditions force it on.

Relay connection (see Figure 3.1, below): Form C relays, rated 250V, 5A–2 each.

KYZ relay output (Form C), rated 200V, 100mA–1 each.

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20					N.O.	ALARM #1
21					N.C.

22 COM

23 N.O.

24			N.C.	ALARM #2

25 COM

26 K

27	Y	PULSE
28	Z	OUTPUT

Figure 3.1: Close-up of the Relay and KYZ pulse output on the rear panel.

Note: The relays shown in the figure above are in the NOT energized state.

THE INSTRUMENT DETECTS TWO LEVELS OF ALARM FOR THE FOLLOWING FUNCTIONS:

	Voltage:	AN, BN, CN, AB, BC, CA
	Current:	A, B, C, N

Over and Reverse Power

Under PF/KVAR Lead or Lag

Over KVA

Voltage Imbalance (One level only)

Over/Under Frequency

Voltage Phase Reversals (One level only)

Over/Under %THD (Available only with option –H)

Over/Under K-Factor

KYZ RELAYS: Provides pulses for energy management systems or any other type of recording device. These pulses represent accumulated watt-hour, negative watt-hour, or VA-hour. Accomplish this assignment through the Programming Mode (see programming sections). The pulse value is determined by the decimal increment of the power function assigned to the pulse. The EPM 5200P can be equipped with KYZ pulse outputs.

NOTE: Unless otherwise specified, standard KYZ setup represents positive watt hour. See table below for standard rate. The scale factor for wattage (KW or MW) and Full Scale Decimal Point Placement is selectable in Programming Mode GROUP 1, FUNCTION 2. Follow the Decimal Point Placement corresponding to the Change in Level. A multiplication or division factor can be programmed. See Programming GROUP 0, FUNCTION 6 for a different rate.

STANDARD RATE TABLE FOR WATTS*

DECIMAL POINT PLACEMENT	CHANGE IN LEVEL
(KW/MW)
9999.000	1.0 Units W-Hour
999.900	0.1 Units W-Hour
99.990	0.01 Units W-Hour
9.999	0.001 Units W-Hour

*Units could be KiloWatts or MegaWatts.

3.8: KYZ Pulse Outputs: NL2 Option

The -NL2 option for the meter is equipped with three KYZ outputs. KYZ relays provide pulses for energy management systems or any other type of recording device. These pulses represent accumulated positive watt-hour, negative watt-hour, VA-hour, positive VAR-hour, or negative VAR-hour. Accomplish this through Programming Mode GROUP 0, FUNCTION 6. The pulse value is dependent upon the Decimal Point Placement and is determined by the decimal increment of the power function assigned to the pulse. Refer to the situation that applies to the meter setting.

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Note: Unless otherwise specified, standard KYZ setup for Pulse Output 0 is positive Watt Hour, Pulse Output 1 is negative Watt-Hour, and Pulse Output 2 is VA-hour. See table below for standard rate.

Note: With Option R (available only with the EPM 5200P) the setup for Pulse Output 0 is positive Watt-Hour, Pulse output 1 is positive VAR-hour, and Pulse output 2 is negative VAR-hour.

The scale factor for Wattage (KW or MW) and Full Scale Decimal Point Placement is selectable in Programming Mode GROUP 1, FUNCTION 2. Follow the Decimal Point Placement corresponding to the Change in Level. A multiplication or division factor can be programmed. See Programming GROUP 0, FUNCTION 6 for a different rate.

STANDARD RATE TABLE FOR WATTS*

DECIMAL POINT PLACEMENT	CHANGE IN LEVEL
(KW/MW)
9999.0	1.0 Units W Hour
999.9	0.1 Units W Hour
99.99	0.01 Units W Hour
9.999	0.001 Units W Hour

*Units could be KiloWatts or MegaWatts.

2 0					K
2 1					Y			P U L S E
2 2					Z			O U T P U T 2
2 3					K
2 4					Y			P U L S E
2 5					Z			O U T P U T 1
2 6					K
2 7					Y			P U L S E
2 8					Z			O U T P U T 0

Figure 3.2: KYZ Relay Connection for -NL2 Option

KYZ relay output (Form C), rated 200V, 100mA: 3 separate KYZ Outputs (labeled 0 through 2).

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CHAPTER 4: COMMUNICATION INSTALLATION

CHAPTER 4

COMMUNICATION INSTALLATION

4.1: RS-232C

(This section applies to the RS-232C or RS-485.)

All EPM 5300P and 5200P instruments can be equipped with RS-232C or RS-485 communication.

RS-232C communication links a single instrument with a computer or device such as an RTU or PLC. Its capability is up to 100 feet. A standard 9-pin female serial port connector mounts on the instrument for direct connection to a computer with a 9-pin cable.

BACK VIEW

RS-232 COMMUNICATION CONNECTION

8 9 10 11 12 13

	7			CONNECTION FOR DB-9 FEMALE
			20
				PIN 2 - RECEIVE OF THE HOST/COMPUTER
	6		21
	5	COMMUNICATION	22	PIN 3 - TRANSMIT OF THE HOST/COMPUTER
				PIN 5 - GROUND OF THE HOST/COMPUTER
	4	CONVERTER	23
		Model	24
	3			5	4 3 2 1
		SF-232DB3	25
	2						DETAIL OF DB-9
			26
					9 8	7	6
	1		27
			28

LAPTOP

DB-9 CONNECTOR

A DIRECT PIN-TO-PIN CABLE CAN BE USED.

NO NULL MODEM IS REQUIRED.

Figure 4.1: RS-232C Communication Connection Installation

Note: To avoid ground loops, the neutral and safety ground (pin 3) should be connected together at only one point.

4.2: RS-485

Each EPM 5300P or 5200P instrument has a unique address up to four digits long. This allows the user to communicate with up to 10,000 instruments. Available standard baud rates are 1200, 2400, 4800, and 9600. To select the proper baud rate, apply the following rules:

The unit operates up to 9600 baud. For a smaller number of instruments over a long distance, use a lower baud rate. Optimal recommended baud rate is 1200 baud, if noisy conditions exist.

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CHAPTER 4: COMMUNICATION INSTALLATION

RS-485 Hookup Diagram (2 wire) Half Duplex

5300P Instruments (rear view)

RS-485

Communications Port

Model#SF485DB

RT

RT

RS-485

UNICOM 2500

(Bottom View Shown)

RS-232

PC

(+) (-)

Figure 4.2: 2-Wire RS-485 Communication Connection Installation half duplex —Detail view on following page

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CHAPTER 4: COMMUNICATION INSTALLATION

RS-485 Hookup Diagram (2 wire) Half Duplex (Closed Loop)

5300P Instruments (rear view)

RS-485

Communications Port

Model #SF485DB

RS-232

RS-485

UNICOM 2500

(Bottom View Shown)

Figure 4.3: 2-Wire RS-485 Communication Connection Installation half duplex (closed loop)

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CHAPTER 4: COMMUNICATION INSTALLATION

	RS-485 Hookup Diagram (2 wire) Half Duplex: Detail View
		RS-485	RS-485
		Communications	Communications
		Port	Port
		Model#	Model#
		SF485DB	SF485DB
		G R+ T+ R- T-	G R+ T+ R- T-
		RT
RS	RS
232-	485-	T-
		R-
		T+
		R+
		Gnd
		)-(
	UNICOM 2500	(+)
	(Bottom View Shown)

Figure 4.4: 2-Wire RS-485 Communication Connection Installation half duplex, detail view

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CHAPTER 4: COMMUNICATION INSTALLATION

RS-485 Hookup Diagram (4 wire) Full Duplex

5300P Instruments (rear view)

RS-485

Communications Port

Model#SF485DB

Note: This does not represent a twisted pair. It shows the cross-over from R to T between the Unicom and the rest of the bus.

RS-485

RS-232

UNICOM 2500

(Bottom View Shown)

PC

R+ R- T+ T-

Figure 4.5: 4-Wire RS-485 Communication Connection Installation full duplex —Detail view on following page

Connecting 4-Wire bus to RS-485 Port:

•Connect the T- wire of the Unicom 2500 to the R- on the RS-485 port

•Connect the R- wire of the Unicom 2500 to the T- on the RS-485 port

•Connect the T+ wire of the Unicom 2500 to the R+ on the RS-485 port

•Connect the R+ wire of the Unicom 2500 to the T+ on the RS-485 port

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CHAPTER 4: COMMUNICATION INSTALLATION

RS-485 Hookup Diagram (4 wire) Full Duplex: Detail View

Note: This does not represent a twisted pair. It shows the cross-over from R to T between the Unicom and the rest of the bus.

	-RS	-RS	T-
	232	485
			R-
			T+
			R+
			Gnd

UNICOM 2500

(Bottom View Shown)

RS-485

Communications

Port

Model#

SF485DB

G

R+

T+

R-

T-

RS-485

Communications

Port

Model#

SF485DB

G

R+

T+

R-

T-

Enlarged view of twisted pair segments

	Receive Pair
-R	R-
R+	R+
	Transmit Pair
-T	T-
T+	T+

Figure 4.6: 4-Wire RS-485 Communication Connection Installation full duplex, detail view

Connecting 4-Wire bus to RS-485 Port:

•Connect the T- wire of the Unicom 2500 to the R- on the RS-485 port

•Connect the R- wire of the Unicom 2500 to the T- on the RS-485 port

•Connect the T+ wire of the Unicom 2500 to the R+ on the RS-485 port

•Connect the R+ wire of the Unicom 2500 to the T+ on the RS-485 port

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CHAPTER 4: COMMUNICATION INSTALLATION

4.3: Network of Instruments and Long Distance Communication

The RS-485 Transceiver is required for a large network of instruments.

•In a two-wire connection, a maximum of 900 instruments can be included in the same network (Figure 4.7)

•In a four-wire connection, a maximum of 3600 instruments can be included in the same network (Figure 4.8).

			RS-485
DEVICE	32 UNITS	DEVICE	TRANSCEIVER
			(Acts as Repeater)
			32	COMPUTER
			TRANSCEIVERS
			RS-485
DEVICE	32 UNITS	DEVICE	TRANSCEIVER
			(Acts as Repeater)

Figure 4.7: 2-Wire RS-485 Communication Installation Connection with Transceiver

DEVICE	32 UNITS	DEVICE	RS-485
			TRANSCEIVER
			(Acts as Repeater)
			32	COMPUTER
			TRANSCEIVERS
DEVICE	32 UNITS	DEVICE	RS-485
			TRANSCEIVER
			(Acts as Repeater)

Figure 4.8: 4-Wire RS-485 Communication Installation Connection with Transceiver

Use modems (dedicated or dial-up) when the instruments are located at great distances. However, set the modem to auto answer at the recommended value of 1200 baud rate, if noise conditions exist. Also, flow control must be disabled.

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CHAPTER 4: COMMUNICATION INSTALLATION

YOU MAY WANT TO USE A MODEM MANAGER RS485-RS232 CONVERTER

When speaking to most RS-485 or RS-232C based devices, the remote modem must be programmed for the communication to work. This task is often quite complicated because modems are quirky when talking to remote devices. To make this task easier, EIG has designed a Modem Manager RS-485 to RS-232C converter. This device automatically programs the modem to the proper configuration. Also, if you have poor telephone lines, modem manager acts as a line buffer, making the communication more reliable.

I. MODEM CONNECTED TO COMPUTER (ORIGINATE MODEM)

Programming the Modem

Comply with the modem’s instruction manual and follow these instructions:

RESTORE MODEM TO FACTORY SETTINGS:

•This procedure erases all previously programmed settings.

SET MODEM TO DISPLAY RESULT CODES:

•The device uses the result codes.

SET MODEM TO VERBAL RESULT CODE:

•The device uses the verbal codes.

SET MODEM TO IGNORE DTR SIGNAL:

•Necessary for the device to ensure connection with originate modem.

SET MODEM TO DISABLE FLOW CONTROL:

• Necessary to communicate with remote modem connected to device.

TELL MODEM TO WRITE THE NEW SETTINGS TO ACTIVATE PROFILE:

•Places these settings into nonvolatile memory; the settings take effect after the modem powers up.

II. MODEM CONNECTED TO THE DEVICE (REMOTE MODEM)

Programming the Modem

Comply with the modem’s instruction manual and follow these instructions:

RESTORE MODEM TO FACTORY SETTINGS:

•This procedure erases all previously programmed settings.

SET MODEM TO AUTO ANSWER ON N RINGS:

• Sets the remote modem to answer the call after n rings.

SET THE MODEM TO AUTO NEGOTIATE MODE:

•Sets the remote to auto negotiate to communicate successfully with EPM 5300P and other devices in the modem.

SET MODEM TO RETURN NUMERIC RESULT CODES:

•Increases speed connection with EPM 5300P.

SET MODEM TO IGNORE DTR SIGNAL:

•Necessary for device to ensure connection with originate modem.

SET MODEM TO DISABLE FLOW CONTROL:

• Necessary to communicate with remote modem connected to EPM 5300P.

TELL THE MODEM TO WRITE THE NEW SETTINGS TO ACTIVATE PROFILE:

•Places new settings into nonvolatile memory; settings take effect after the modem powers up.

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CHAPTER 4: COMMUNICATION INSTALLATION

Debugging Communication Problems

If you experience NO communication, check these conditions:

•Is the Baud Rate set correctly (see Part II: Programming Section)?

•Is the Meter Address set correctly (see Part II: Programming Section)?

•Is the correct protocol set? Modbus, DNP 3.0?

•Set the meter for the appropriate protocol for the internal software.

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