Rockwell Automation 1404-M4, 1404-M5, 1404-M6, 1404-M8 User Manual

Installation Instruction

Powermonitor 3000

(Catalog Numbers: 1404-M4, 1404-M5, 1404-M6, 1404-M8)

Inside. . .
Important User Information...............................................................	2
European Communities (EC) Directive Compliance........................	3
Using This Installation Instruction ....................................................	4
Safety Considerations.........................................................................	6
Product Description ...........................................................................	7
Master Module....................................................................................	8
Display Module ................................................................................	10
LED Indicators..................................................................................	11
Quick Start Guidelines.....................................................................	15
Installation ........................................................................................	15
System Accuracy Considerations.....................................................	17
Wiring ...............................................................................................	19
Wiring Diagrams ..............................................................................	23
Communication Wiring....................................................................	38
Maintenance .....................................................................................	51
Catalog Number Explanation ..........................................................	55
Dimension Drawings .......................................................................	56
Product Approvals ...........................................................................	57
Technical Specifications...................................................................	59

Publication 1404-IN007D-EN-P - October 2004

2 Powermonitor 3000

Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application,

Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

WARNING

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

IMPORTANT

Identifies information that is critical for successful application and understanding of the product.

ATTENTION

Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

SHOCK HAZARD Labels may be located on or inside the drive to alert people that dangerous voltage may be present.

BURN HAZARD	Labels may be located on or inside the drive to alert
	people that surfaces may be dangerous temperatures.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 3

European Communities (EC)

Directive Compliance

If this product has the CE mark, it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EEC Electromagnetic Compatibility (EMC) by applying the following standards, in whole or in part, documented in a technical construction file:

•EN 50081-2 EMC — Generic Emission Standard, Part 2 — Industrial Environment

•EN 50082-2 EMC — Generic Immunity Standard, Part 2 — Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of IEC 1010-1, Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use.

This equipment is classified as an open style device. Open style devices must be provided with environmental and safety protection by proper mounting in enclosures designed for specific application conditions. See NEMA Standards publication 250 and IEC publication 529, as applicable, for explanations of the degrees of protection provided by different types of enclosure.

Publication 1404-IN007D-EN-P - October 2004

4 Powermonitor 3000

Using This Installation	What This Manual Doesn’t Contain
Instruction	This manual does not contain the following information. Except as
	noted, refer to the Powermonitor 3000 User Manual, Publication
	1404-UM001 for detailed information on the topics in this list.
	• Information on metering functionality and measurements
	• Use of the Display Module for configuration, monitoring and
	commands
	• Discussion of communications options, functionality,
	configuration and operation
	• Setpoint configuration and operation
	• Discrete I/O configuration and operation
	• Data logging including Event Log, Trend Log, Min/Max Log,
	Load Factor Log
	• Advanced features including Oscillography, Harmonic Analysis
	and Transient Detection
	• Powermonitor 3000 data tables
	• Sample ladder diagrams for communicating with the
	Powermonitor 3000 using various communications options
	• Display module installation instructions (refer to Publication
	1404-IN005)
	For More Information on Additional Power Quality Products
	Table 1 Related Documentation
	For this information:	Refer to Publication:
	Powermonitor 3000 User Manual	1404-UM001
	Powermonitor 3000 Display Module Installation	1404-IN005
	Instructions
	Bulletin 1403 Powermonitor II Tutorial	1403–1.0.2
	Ethernet Series B Release Note	1404-RN008

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 5

Terms and Conventions

In this manual, the following terms and conventions are used:

Table 2

Abbreviation	Term
AWG	American Wire Gage
CSA	Canadian Standards Association
CT	Current Transformer
DM	Display Module
EMI	Electromagnetic Interference
ID	Identification
IEC	International Electrotechnical Commission
LED	Light Emitting Diode
NEMA	National Electrical Manufacturers Association
PLC	Programmable Logic Controller
PT	Potential Transformer
	(Also known as VT in some countries)
RAM	Random Access Memory
RFI	Radio Frequency Interference
R I/O	Remote Input/Output
RMS	Root–mean–square
SLC	Small Logic Controller
SPDT	Single Pole Double Throw
UL	Underwriters Laboratories
VA	Volt–ampere
VAR	Volt–ampere Reactive
CIP	Control and Information Protocol
NAP	Network Access Port

Publication 1404-IN007D-EN-P - October 2004

6 Powermonitor 3000

Safety Considerations

ATTENTION

Only qualified personnel, following accepted safety procedures, should install, wire and service the Powermonitor 3000 and its associated components. Before beginning any work, disconnect all sources of power and verify that they are de-energized and locked out. Failure to follow these instructions may result in personal injury or death, property damage or economic loss.

	ATTENTION			Never open a current transformer (CT) secondary
				circuit with primary current applied. Wiring between
				the CTs and the Powermonitor 3000 should include a
				shorting terminal block in the CT secondary circuit.
				Shorting the secondary with primary current present
				allows other connections to be removed if needed.
				An open CT secondary with primary current applied
				produces a hazardous voltage, which can lead to
				personal injury, death, property damage or economic
				loss.

		The Powermonitor 3000 is not designed for nor
	IMPORTANT
		intended for use as a circuit protective device. Do
		not use this equipment in place of a motor overload
		relay or circuit protective relay.

		The relay output contacts and solid-state KYZ output
	IMPORTANT
		contacts on the Powermonitor 3000 may be used to
		control other devices through setpoint control or
		communications. The response of these outputs to a
		communications failure is configurable by the user.
		Refer to Publication 1404-UM001 for information on
		configuring the outputs. Be sure to evaluate the
		safety impact of the output configuration on your
		plant or process.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 7

Other Warnings

Product Description

	ATTENTION	Electrostatic discharge can damage integrated circuits
		or semiconductors. Follow these guidelines when
		you handle the module.

• Touch a grounded object to discharge static potential.

•Wear an approved wrist strap-grounding device.

•Do not open the module or attempt to service internal components.

•If available, use a static safe workstation.

•When not in use, keep the module in its static shield bag.

The Bulletin 1404 Powermonitor 3000 is uniquely designed and developed to meet the needs of both producers of and users of electric power. A Powermonitor 3000 system consists of:

•Master Module which provides metering and native RS-485 communications

•Optional Display Module for configuration, commands and data display

•Optional communications port to serve data to other devices using a choice of networks

•Optional external devices and applications that display and utilize data for reporting, control and management of power and energy usage

The Powermonitor 3000 is a microprocessor-based monitoring and control device ideally suited for a variety of applications including:

•Load Profiling - Using the configurable trending utility to log power parameters such as real power, apparent power and demand, for analysis of power usage by loads over time.

•Demand Management - Understanding when and why demand charges occur allows you to make informed decisions that reduce your electrical power costs.

•Cost Allocation - Knowing your actual energy costs promotes manufacturing efficiencies.

Publication 1404-IN007D-EN-P - October 2004

8 Powermonitor 3000

Master Module

•Distribution System Monitoring - Using power parameters to show power flow, system topology and distribution equipment status.

•Emergency Load Shedding - Monitoring power usage to preserve system stability in the event of sudden utility outage.

•Power System Control - Managing system voltage, harmonic distortion and power factor.

The Powermonitor 3000 is a sophisticated modern alternative for traditional electro-mechanical metering devices. A single Powermonitor 3000 can replace many individual transducers and meters. The Powermonitor 3000 is operator-friendly and provides the user with easy to understand, accurate information in a compact economical package.

The Master Module contains the main microprocessor-based monitoring functions, including terminations for power system connections, status inputs, control outputs, a native RS-485 communications port and a port for the Display Module

Configuration

Although the Powermonitor 3000 ships from the factory with default settings, you will need to configure it for your particular requirements. You may configure the Powermonitor 3000 using the optional Display Module. Alternately, you may use an external device or application to write configuration, operational parameters and commands to the Master Module through its native or optional communications port. Refer to the Powermonitor 3000 User Manual, publication 1404-UM001 for additional detail.

Optional external applications that you may use for Powermonitor 3000 configuration include RSPower32™ and RSEnergyMetrix™ software operating on a personal computer. Contact your local Rockwell Automation sales office or distributor, or visit http://www.software.rockwell.com/ for more information on available software packages.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 9

Communications

Every Powermonitor 3000 comes with a native RS-485

communications port. The RS-485 port may be configured to use the Allen-Bradley DF1 half-duplex slave protocols or Modbus RTU

slave. The native port is suitable for communicating to master devices including:

• PLC-5 , SLC 500 and ControlLogix processors

• RSLinx software with DDE/OPC server functionality

•Modbus RTU Master devices

•Other third-party devices

•Software that you develop

You may also specify Powermonitor 3000 units with optional communications ports including:

•Serial RS-232 (DF1 half-duplex or Modbus RTU slave)

•Remote I/O

•DeviceNet

•EtherNet/IP

•ControlNet

A Powermonitor 3000 may be easily integrated into a programmable controller or computer based control and monitoring system, using any of the communications methods listed above.

Publication 1404-IN007D-EN-P - October 2004

10 Powermonitor 3000

Figure 3 Master Module with Communication Options

	Removable Status Input
	Connector
Terminal Blocks
	LED Indicators
Powermonitor 3000	Powermonitor 3000
	Display Module Port	NAP Port
Optional		ControlNet
		Channel A
RS-232 Port
		ControlNet
	RS-485 (Native)	Channel B
	Communications Port

			Auxiliary
Powermonitor 3000	Powermonitor 3000	Powermonitor 3000	Port (not	Powermonitor 3000
			used)
Optional	Optional		Optional	Optional
Remote I/O	DeviceNet		Ethernet	Ethernet
Port	Port		10BaseT	10BaseT
			Port	Port
			(Series A)	(Series B)

Display Module

The Bulletin 1404 Display Module is an optional user interface device. The Display Module provides the most economical and simplest method for setting up and configuring the Master Module for operation.

The Display Module has a highly visible, two-line LED display and four operator buttons with tactile feedback. Use the buttons and display to navigate through a series of menus for configuration, commands and data display.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 11

LED Indicators

Figure 5 LED Indicators

Powermonitor 3000

MODULE

STATUS

RX

RS-485

TX

The Display Module is shipped with a 3-meter (10 ft) long, shielded 4-pair cable that provides power and serial communications between the Master Module and the Display Module. The Display Module fits into a standard ANSI four inch analog meter cutout for panel mounting. Only one Display Module may be connected to a Master Module, although you may use one Display Module to configure and monitor any number of Master Modules; one at a time.

Figure 4 Display Module

The Powermonitor 3000 is equipped with six bi-color light emitting diodes (LED’s) arranged as shown in Figure 5.

The three LED’s on the left display the same information on Powermonitor 3000 modules with any communication option including native RS-485 communications only. The three LED’s on the right have different labels and different indications depending on the communications option selected, as shown in the charts below.

Table 6 LED Indicators All Powermonitor 3000 Models

LED	LED Color	LED State and Communications
		Condition
Module Status	Off	Control power is off or insufficient
	Steady Red	Major fault; internal self-test has failed. If a
		power cycle does not correct the problem,
		call customer support
	Steady Green	Powermonitor 3000 is operating normally
RS-485 RX	Off	The RS-485 bus is idle; no active data is
		present
	Flashing Green	Active data is present on the RS-485 bus
RS-485 TX	Off	Powermonitor 3000 is not transmitting data
		onto the RS-485 bus
	Flashing Green	Powermonitor 3000 is transmitting data
		onto the RS-485 bus

Publication 1404-IN007D-EN-P - October 2004

12 Powermonitor 3000

Powermonitor 3000

F1

F2

F3

Powermonitor 3000

F1

RXTX }RS-232

Powermonitor 3000

F1

F2

R I/O

Table 7 Native RS-485 Communications only (catalog numbers ending in -000)

LED	LED Color	LED State and Communications
		Condition
F1	Off	Not Used
F2	Off	Not Used
F3	Off	Not Used

Table 8 RS-232 Optional Communications (catalog numbers ending in -232)

LED	LED Color	LED State and Communications
		Condition
F1	Off	Not Used
RS-232 RX	Off	The RS-232 bus is idle; no active data is
		present
	Flashing Green	Powermonitor 3000 is receiving data.
RS-232 TX	Off	The Powermonitor 3000 is not transmitting
		any data onto the RS-232 bus
	Flashing Green	The Powermonitor 3000 is transmitting
		data.

Table 9 Remote I/O Optional Communications (catalog numbers ending in -RIO)

LED	LED Color	LED State and Communications
		Condition
F1	Off	Not Used
F2	Off	Not Used
R I/O	Off	Remote I/O communications has not been
		established
	Flashing Green	Remote I/O communications has been
		established but there are errors
	Steady Green	Remote I/O communications has been
		established

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 13

Powermonitor 3000

F1

F2

NETWORK

STATUS

Powermonitor 3000

LINK

RX

TX

Table 10 DeviceNet Optional Communications (catalog numbers ending in -DNT)

LED	LED Color	LED State and Communications
		Condition
F1	Off	Not Used
F2	Off	Not Used
NETWORK STATUS	Off	Power is off or the Powermonitor 3000 is
		not online
	Flashing Green	Network status is OK, no connections
		established
	Steady Green	Network status is OK, connections
		established
	Flashing Red	Recoverable communications failure; port is
		restarting
	Steady Red	Non-recoverable communications error;
		check wiring and configuration parameters

Table 11 Ethernet Optional Communications (Series A catalog numbers ending in -ENT)

LED	LED Color	LED State and Communications
		Condition
LINK	Off	Ethernet connection is inactive
	Steady Green	Ethernet connection is active
RX	Off	Ethernet is idle, no active data present on
		port
	Flashing Red	Active data is present on Ethernet port
TX	Off	Powermonitor 3000 is not transmitting any
		data through the Ethernet port
	Flashing Red	Powermonitor 3000 is transmitting data

Publication 1404-IN007D-EN-P - October 2004

14 Powermonitor 3000

Powermonitor 3000

Powermonitor 3000

LNK

ACT

F1

F2

NETWORK STATUS

CHAN A

CHAN B

NETWORK STATUS

Table 12 Ethernet/IP Optional Communications (Series B catalog numbers ending in -ENT)

LED	LED Color	LED State and Communications
		Condition
LNK	Off	No valid physical Ethernet connection
	Steady Green	Valid physical Ethernet connection
ACT	Strobing or	Powermonitor 3000 transmitting onto
		Ethernet
	Solid Yellow
F1	Off	Not Used
F2	Off	Not Used
NETWORK STATUS	Off	No power
	Flashing Green	No established connections
	Steady Green	Connected; has at least one established
		connection
	Flashing Red	Connection timeout; one or more
		connections to this device has timed-out
	Steady Red	Duplicate IP; the IP address assigned to this
		device is already in use
	Flashing Green/Red	Selftest; this device is performing a
		power-up self test

Table 13 ControlNet Optional Communications (catalog numbers ending in -CNT)

	LED	LED Color	LED State and Communications
			Condition
	CHAN A and	Off	No power or Channel disabled
	CHAN B
		Steady Red	Faulted unit
		Alternating	Self-test
		red/green
		Alternating red/off	Incorrect node configuration
		Steady green	Normal operation
		Flashing green/off	Temporary errors or node is not configured
			to go on-line
		Flashing red/off	Media fault or no other nodes present on
			network
		Flashing red/green	Incorrect network configuration
	Status	Off	Normal operation
		Flashing green	Communication card power-up self-test

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 15

Quick Start Guidelines

Installation

The Powermonitor 3000 may be used in many electric power monitoring and control systems. Whether your Powermonitor 3000 is a complete power and energy monitor or a component in a plantor enterprise-wide energy management system, there are a few basic steps to follow to make your unit operational.

1.Install your Powermonitor 3000 master module within a suitable enclosure. Refer to Installation on page 15.

2.Install your optional Display Module. Refer to the Installation Instructions included with the Display Module, publication 1404-IN005.

3.Determine your Wiring Mode and install wiring between the Powermonitor 3000 and your power system. Connect control power wiring, preferably from a separate source of control power. If used, connect wiring to the status inputs, Form C control relay, and KYZ solid-state outputs. Refer to Wiring of Master Module on page 20.

4.Configure the potential transformer (PT) and current transformer (CT) ratios to match those used in your power system connections. Configure the Voltage Mode of the Powermonitor 3000 to match your power system configuration.

5.Configure Powermonitor 3000 communications. This step varies depending upon the communications option you have selected.

6.Configure other optional performance features such as Setpoint Control, Data Logging, etc.

Refer to the Powermonitor 3000 User Manual, publication 1404-UM001, for complete information on configuring and operating your Powermonitor 3000.

Only qualified personnel should install, wire, service and maintain this equipment. Refer to and follow the safety guidelines found starting at page 6 and pay attention to all warnings and notices in these instructions.

Publication 1404-IN007D-EN-P - October 2004

16 Powermonitor 3000

Prevent Electrostatic Discharge

	ATTENTION	Electrostatic discharge can damage integrated circuits
		or semiconductors. Follow these guidelines when
		you handle the module.

• Touch a grounded object to discharge static potential.

• Wear an approved wrist strap grounding device.

• Do not open the module or attempt to service internal components.

• If available, use a static safe work station.

• When not in use, keep the module in its static shield bag.

Mounting of Master Module

Mount the Powermonitor 3000 Master Module in a suitable protective enclosure. Select an enclosure that will protect the Master Module from atmospheric contaminants such as oil, water, moisture, dust corrosive vapors and other harmful airborne substances. The enclosure should also protect against personnel contact with energized circuits. The ambient temperature within the enclosure must remain within the limits listed in the Specifications, page 61.

Select an enclosure that will provide adequate clearance for ventilation and wiring for the Powermonitor 3000 and other equipment to be installed within the enclosure. See Figure 41 and Figure 42 for dimensions and spacing guidelines for the Powermonitor 3000.

Mount the Master Module so that the metal grounding clips on the bottom of the mounting feet make direct contact with the enclosure mounting panel. If the mounting panel is painted, scrape or sand the paint down to bare metal. Use star washers to assure good long-term electrical contact with the mounting panel. Ensure that the mounting panel is properly connected to a low-impedance earth ground.

Mount the enclosure in a position that allows full access to the Powermonitor 3000 Master Module. Install the Master Module with the ventilation slots in the bottom and top of the unit unobstructed to assure adequate free convection cooling of its internal electronic components.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 17

System Accuracy

Considerations

		Use caution not to block the ventilation slots of the
	IMPORTANT
		Master Module. All wiring and other obstructions
		must be a minimum of 50 mm (2.0 inches) from the
		top and bottom of the unit.

See Figure 41 on page 56 for mounting hole dimensions. Mount the Master Module with four (4) No. 8-32 UNC or M4 screws with flat washers and lock washers.

User supplied potential transformers (PTs) and current transformers (CTs), as well as wiring from the CTs to the Powermonitor, may reduce the accuracy of your Powermonitor 3000 system. The quality of the Powermonitor 3000’s measurements can be no better than the quality of the signals presented to its input terminals. It is the user’s responsibility to select transformers that are adequate for the desired metering accuracy.

ANSI/IEEE C57.13, Requirements for Instrument Transformers, defines three classes of transformer accuracy: class 1.2, class 0.6, and class 0.3. The application should dictate the transformer accuracy class to be used.

PTs and CTs may introduce errors in three areas: ratio errors, phase errors, and bandwidth errors.

Ratio Errors

The voltage ratio of a PT is the number of primary turns of wire divided by the number of secondary turns. Manufacturing tolerances may cause the ratio to be slightly different than the design specifies, causing an error affecting the voltage input to the Powermonitor 3000.

Likewise, the current ratio of a CT is a function of the ratio of the number of turns of wire on the primary and secondary. Some error in this ratio is quite common in commercial grade PTs and CTs.

Other errors include magnetic core losses, winding impedance, and the burden, or load, on the transformer secondary. The combination of these errors is known as “Ratio Error”. You may compensate for Ratio Error, if known, by adjusting the Basic Configuration entries for PT and CT primary or secondary voltages.

Publication 1404-IN007D-EN-P - October 2004

18 Powermonitor 3000

For a PT the Ratio Error increases as the transformer’s load current increases, so its total load impedance should be as high as possible. Conversely, a CT’s Ratio Error increases as the voltage supported by the transformer secondary increases, so its total load impedance, including the impedance of the wire connecting the CTs to the metering device, should be as low as possible. This is why #12 AWG or larger is usually recommended for wiring CTs with a 5 amp secondary rating.

Phase Error

Phase shift between the primary to secondary signals is another source of inaccuracy introduced by the user-supplied PTs and CTs. Phase shift is generally not of concern for simple voltage or current measurements. When these signals are combined, for instance when calculating line to line voltage or phase power, the effect of phase shift can become significant. The difference in phase error among different transformers causes measurement errors. If all the PTs and CTs introduced a five-degree phase shift, there would be no error in the measured quantities. If on the other hand the PTs had a phase error of one degree and the CTs had a phase error of six degrees, there would be a five-degree phase error in the power calculation. This would show up as power factor and reactive power (VAR) errors. Phase errors can not be corrected by adjusting the Powermonitor 3000 configuration since the errors change based on varying conditions of the power system.

A typical PT phase error varies from ±1° to ±0.25° depending on the PT’s accuracy class. Applying higher than rated voltage increases the phase error and may saturate the transformer and cause even larger errors.

The phase error in a CT increases as its current decreases, and is lowest when the current is greater than 80% of the CT rating. Because significant phase error can occur when CT current is less than 20% of rated current, CTs sized for protection do not perform well when used for metering.

The phase error of both PTs and CTs are also affected by the power factor of the load on the secondary. For best accuracy, loads should be resistive, with PT loads as high as possible and CT loads as low as possible.

Publication 1404-IN007D-EN-P - October 2004

Powermonitor 3000 19

Bandwidth Error

For fundamental 50 Hz or 60 Hz measurements, bandwidth error has no affect on accuracy. However, for waveforms with significant harmonic content, the user-supplied PTs and CTs may attenuate higher harmonics. Most instrument quality PTs have a flat frequency response out to 3 kHz, or the 50th harmonic on a 60 Hz system. Current transformers, especially older, existing units, tend to be less linear, with a flat response only out to 300 Hz, or the fifth (60 Hz) harmonic. Wide-band instrument CTs are available for improved frequency response. Bandwidth error cannot be corrected by adjusting the Powermonitor 3000 configuration.

In addition, operation of either the PTs or CTs at extremely low frequencies may also cause saturation and resulting magnitude and phase errors.

For more detailed information on instrument transformer accuracy and power measurement, refer to publication 1403-1.0.2, “Bulletin 1403 Powermonitor II Tutorial”.

Wiring

ATTENTION

Only qualified personnel, following accepted safety procedures, should install, wire and service the Powermonitor 3000 and its associated components. Before beginning any work, disconnect all sources of power and verify that they are de-energized and locked out. Failure to follow these instructions may result in personal injury or death, property damage or economic loss.

Wiring of the Powermonitor 3000 includes the following steps:

•Connection of voltage and current signals from PTs and CTs

•Connection of control power

•Connection of status inputs and status/control outputs

•Communications wiring

Please follow these guidelines to help assure reliable, trouble-free operation of your Powermonitor 3000.

Publication 1404-IN007D-EN-P - October 2004

20 Powermonitor 3000

•Install and connect all wiring in a neat and workmanlike manner. Use wire tags to identify connections. Bundle wiring neatly and maintain a minimum of 50 mm (2.0 inches) clearance from the Master Module ventilation slots to avoid a buildup of heat within the unit

•Furnish and install properly-selected fuses for voltage signals and control power

•Use 600 volt wiring rated at 75°C (167°F) or higher. We strongly recommend the use of flame-retardant wire rated VW-1 by Underwriters Laboratories

•Use a shorting terminal block (provided by customer) for CT wiring, to permit servicing connected equipment such as the Powermonitor 3000 Master Module without de-energizing the power system

•Use ring lugs or locking spade lugs for voltage and current connections to provide additional wiring security and safety

•Pay careful attention to correct phasing and polarity for proper operation

•Connect the Master Module to a low-impedance earth ground using its grounding terminal and a dedicated grounding wire at least as large as the largest current-carrying wire connected to the Master Module. Keep grounding wiring as short as possible. To obtain maximum EMI immunity, the Master Module mounting feet should make electrical contact with the mounting panel. Refer to Mounting of Master Module on page 16 for additional information.

•Connect all equipment ground terminals (Master Module, PT and CT secondary) to a single point, low impedance earth ground

For information on wire sizes and types for grounding electrical equipment, refer to publication 1770-4.1, Industrial Automation Wiring and Grounding Guidelines for Noise Immunity or the National Electric Code published by National Fire Protection Association (NFPA).

Wiring of Master Module

Terminal Blocks Wire Sizes and Screw Torques - Observe all wire lug sizes and screw torques. Refer to Technical Specifications on page 59.

Publication 1404-IN007D-EN-P - October 2004