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Power Measurement 3300 ACM Installation & Operation Manual

Economical digital power meter/transduser
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3300 ACM
Economical Digital
Power Meter/Transducer
Installation
& Operation
Manual
C O N T E N T S
Courtesy of NationalSwitchgear.com

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Summary of Contents for Power Measurement 3300 ACM

  • Page 1 3300 ACM Economical Digital Power Meter/Transducer Installation & Operation Manual C O N T E N T S Courtesy of NationalSwitchgear.com...
  • Page 2 B-1930 Zaventem SET FORTH HEREIN. (Brussels), Belgium Tel: 32-2-720-19-19 3300 ACM is a trade mark of Power Measurement Limited. Other brands and Fax: 32-2-720-95-86 their products are trade marks of their respective holders and should be noted as such. Asia & Pacific P O W E R M E A S U R E M E N T ©...
  • Page 3 CONVENTIONS Throughout this operation manual, the following methods are used to highlight important information: Describes important considerations related to a device setup, feature or application. Alerts you to a condition which could potentially cause damage to the device or other external equipment.

  • Page 4: Table Of Contents

    3300 ACM Installation and Operation Manual Power Measurement Ltd. Table of Contents INTRODUCTION Description ......................1-1 System Applications ....................1-2 INSTALLATION Location & Mounting ....................2-1 General Wiring Considerations ................2-2 Power Supply Connections ..................2-2 Chassis Ground Connection ..................2-3 Phase Voltage and Phase Current Input Connections ..........
  • Page 5 Introduction ......................5-1 RS-485 Communication ................... 5-1 Setting the COM MODE, UNIT I.D. & BAUD RATE ..........5-2 3300 ACM -TRAN Model Operation ................. 5-3 M-SCADA / L-SCADA ..................... 5-3 3300 RDT Remote Display Terminal ................ 5-4 Third Party System Compatibility ................5-4 Modicon Modbus Compatibility ................
  • Page 6 Appendices MECHANICAL & MOUNTING DIMENSIONS Display Module ....................... A-1 Base Module ......................A-2 3300 ACM FIRMWARE VERSIONS 3300 ACM TECHNICAL SPECIFICATIONS Accuracy, Resolution, & Range ................C-1 Input Ratings ......................C-1 MODEL/ORDERING INFORMATION WARRANTY & REGISTRATION Warranty ......................... E-1 Product Return Procedure ..................E-1 Registration ......................
  • Page 7 Pulse Output Connections ................2-16 OPERATION 3.3.1 3300 ACM Front Panel Displays ................3-2 3.3.2 3300 ACM Display Module Front Panel Features ............ 3-3 3.4.3 Programming Mode Display and Button Functions ..........3-5 3.4.5 Field Programming Example ................... 3-7 3.4.6a...
  • Page 8 SERIAL COMMUNICATIONS PROTOCOL Read Registers Packet ................... G-5 Write Registers Packet ................... G-7 G-3a 3300 ACM Data Registers - Part I ................G-8 G-3b 3300 ACM Data Registers - Part II ................. G-9 G-3c 3300 ACM Data Registers - Part III ..............G-10 G-3d 3300 ACM Setup Registers - Part IV ..............
  • Page 9 Courtesy of NationalSwitchgear.com...

  • Page 10: Introduction

    • Current on each phase hipot withstand capabilities. • Average current The basic model 3300 ACM can directly replace up to four • kW, total for all phases traditional analog meters and selector switches, while additional measurement options make it possible to •...

  • Page 11: System Applications

    The 3300 ACM is equipped with an optically isolated RS- 485 communications port for remote display of measured b) Co-generation systems. data. This allows the 3300 ACM to be incorporated as one Office and commercial buildings, including large element within sophisticated SCADA or Energy Manage- stores, shopping centres, and hotels.

  • Page 12: Installation

    INSTALLATION The enclosure that the 3300 ACM is mounted in (typically a switchgear cabinet) should protect the device from atmo- spheric contaminants such as oil, moisture, dust, and DANGER corrosive vapours, or other harmful airborne substances. The mounting enclosure should be positioned such that the...

  • Page 13: General Wiring Considerations

    Power Supply Options to be mounted against a wall with the terminal strip in a The basic model 3300 ACM can be powered by 108 to 132 vertical orientation. However, the module can be mounted VAC/47 to 66 Hz at 0.25 Amps. A number of power supply in whichever orientation is most convenient.

  • Page 14: Chassis Ground Connection

    CONNECTION Devices equipped with any one of the HIACC options are The ground terminal, G, of the 3300 ACM serves as the zero designed to be used with the specific system voltage defined voltage reference point for voltage measurements, as well as by the option.

  • Page 15: Phase Current Inputs

    PTs is over 25 Watts the secondaries should be fused. The 3300 ACM uses CTs to sense the current in each phase of the power feed. The selection of the CTs is important because it directly affects accuracy.
  • Page 16 Figure 2.5.4a below. VOLTS MODE should be set to 4 WIRE wire Wye system configurations. WYE. For a 4 wire Wye system, the 3300 ACM senses the line-to- neutral (or ground) voltage of each phase and current of each phase, making for an equivalent 3 element metering configuration.
  • Page 17 CT SHORTING SWITCH OR TEST BLOCK Base Module 6703 RAJPUR PLACE POWER MEA SUREMENT VICTORIA, B.C. LTD . CANADA V8X 3X1 MODEL: 3300 ACM SERIAL NUMBER: OPTIONS: SWITCHGEAR CHASSIS GROUND ELECTRICAL RATINGS 250 mA SLO BLO MADE IN CANADA SUPPLY POWER...
  • Page 18 The 3300 ACM also supports a 2½-element connection WARNING scheme which requires only two PTs. In this mode, the phase B voltage reading is derived from the other available VOLTS MODE = 3 WIRE WYE will only voltages. provide accurate power measurement if the voltages are balanced.
  • Page 19 When the common or star point of a 3 wire Wye system is This configuration is shown in Figure 2.5.4d. The VOLTS grounded, the 3300 ACM may be connected directly without MODE should be set to 4 WIRE WYE. the use of PT’s (provided the voltages are within the input range of the unit).
  • Page 20 2.5.5 CONNECTION FOR THREE PHASE The 3300 ACM may be connected in either of two ways: using 2 or 3 CTs. Figure 2.5.5a below shows ungrounded DELTA SYSTEMS Delta connection using 3 CTs. VOLTS MODE should be set For ungrounded (floating) 3 wire Delta systems, the 3300 to 3 WIRE DELTA.
  • Page 21 CT SHORTING SWITCH OR TEST BLOCK Base Module 6703 RAJPUR PLACE POWER MEA SUREMENT VICTORIA, B.C. LTD . CANADA V8X 3X1 MODEL: 3300 ACM SERIAL NUMBER: OPTIONS: SWITCHGEAR CHASSIS GROUND ELECTRICAL RATINGS 250 mA SLO BLO MADE IN CANADA FUSES...

  • Page 22: Connections For Single Phase Systems

    3300 ACM should be set to SINGLE PHASE. the two voltage phases (each 180 degrees with respect to each other) to the V1 and V2 inputs of the 3300 ACM, and the outputs of the two corresponding current transformers to the I1 input pair and I2 input pair.

  • Page 23: Communications Connections

    COM128 offers a total of four RS-485 ports that can each CONNECTIONS support up to 32 devices. The 3300 ACM is equipped with an RS-485 communications port. Optical coupling provides full isolation between the RS- 485 communication lines and the metering equipment.
  • Page 24 Devices on an RS-485 bus are connected in a point-to-point When determining the overall length of an RS-485 communi- configuration, with the (+) and (-) terminals of each device cation straight-line or loop connection, it is important to connected to the associated terminals on the next device. This account for all cable segments.
  • Page 25 STRAIGHT-LINE TOPOLOGY Last 3300 ACM 3300 ACM 3300 ACM RS-485 Device Base Module Base Module Base Module (End Point) RS-485 PORT RS-485 PORT RS-485 PORT SHLD SHLD SHLD RS-232C to RS-485 Converter RS-485 Cable Termination Resistor SHLD AWG 22 shielded twisted pair. Overall length: 4000 ft. maximum.
  • Page 26 T-CONNECTION 3300 ACM 3300 ACM Base Module Base Module RS-485 PORT RS-485 PORT RS-485 PORT RS-485 PORT 3-way star SHLD SHLD connection point not allowed 3300 ACM 3300 ACM Base Module Base Module RS-485 PORT RS-232C to RS-485 Converter RS-485 PORT...

  • Page 27: Kwh Pulse Output

    Power Measurement Ltd. KWH PULSE OUTPUT MAINTENANCE The RS-485 communications port of the 3300 ACM can The 3300 ACM contains a non-volatile memory (NVRAM) alternatively be used to provide a kWh pulse output, suitable that provides an integrated battery backup system. The for driving a relay.

  • Page 28: Field Service Considerations

    CONSIDERATIONS without open circuiting the CTs. The shorting block should be wired so that protective relaying is not In the unlikely event that the 3300 ACM unit should fail, servicing will require disconnection and removal of the unit affected. from its mounting for the purpose of repair, or for exchange with a replacement unit.
  • Page 29 Courtesy of NationalSwitchgear.com...

  • Page 30: General Operation

    INTRODUCTION appropriate voltage to the POWER input terminals. This chapter describes the following: The 3300 ACM will first enter its display mode, presenting Volts- Phase-Amps-Power Function. The power function displayed a) Power up procedure. on power-up will depend on the measurement options with b) Front panel operation, included instructions for which the 3300 ACM has been equipped.

  • Page 31: Display Mode

    The following information and Display Resolution formats can be displayed: The 3300 ACM front panel can display readings with up to 9 digits of resolution. The readings for most measured BASIC PHASE DISPLAY parameters are displayed in integer format. Frequency This display is presented on initial power-up (refer to readings are displayed with one decimal place of resolution.

  • Page 32: Front Panel Buttons

    3.3.2 FRONT PANEL BUTTONS Single-phase labels indicate line-to-neutral values are The 3300 ACM uses two long-life, stainless steel membrane being displayed for the indicated phase. switches for parameter selection and programming functions. (See figure 3.3.2) Dual-phase labels indicate line-to-line values are being If the standard display is being viewed, the PHASE button displayed for the indicated phase.
  • Page 33 A complete description of each parameter is provided in Chapter • line-to-line average of the three phases • 3-phase line-to-line Volts display: V(LL) The 3300 ACM can be made to automatically cycle the front • 3-phase Amps display panel display through a preset sequence of measured param-...

  • Page 34: Function Button

    FIELD PROGRAMMING 3.4.2 ENTERING PROGRAMMING MODE To program the setup parameters of the 3300 ACM from the 3.4.1 INTRODUCTION front panel, the user must first enter programming mode. To Basic device programming can be performed quickly and enter programming mode, pressing and holding down the easily from the front panel, or via the communications port CURSOR and INCREMENT buttons together.

  • Page 35: Entering And Changing The Password

    PASSWORD. The entire parameter list wraps around. If a parameter is When the 3300 ACM is shipped, the PASSWORD will be 0. missed, the CURSOR and INCREMENT button combination The correct PASSWORD must be entered if any parameter may be pressed repeatedly to return to the desired parameter.
  • Page 36 Press and quickly release CURSOR & INCREMENT buttons once. PASSWORD= * * * * Enter password by using INCREMENT and CURSOR buttons. Note: 3300 ACM is shipped with password = 0. PASSWORD= * * * 0 Press and quickly release CURSOR & INCREMENT buttons once.

  • Page 37: Operating Parameter Descriptions

    Sets the kWh PULSE pulse width in multiples of 10 milliseconds. 1 to 99 Parameter only appears if PULSE FORMAT = PULSE. BAUD RATE Baud Rate at which the 3300 ACM transmits and receives 300, 1200, 2400, information via communications. 4800, 9600, 19,200...
  • Page 38 NO = bypass diagnostics DIAGNOSTIC MODE parameter group listed below. YES = gain access SERIAL NUMBER The user may view the 3300 ACM factory set serial number. 5 digit # FIRMWARE VER These two parameters indicate the current version and revision...
  • Page 39 This section details the minimum basic programming setup required for proper operation of the 3300 ACM. The 3300 ACM also offers a 1AMP option which for use with CTs with 1 Amp full scale output. If the CTs are not rated for a 5 Amp or 1 Amp full scale...

  • Page 40: Display Format

    CHOOSING A DISPLAY FORMAT ACM’s accuracy is specified in per- centages of full scale reading. How- The 3300 ACM front panel display can present numeric ever, the High-Resolution feature can information and phase labels in a number of different formats display resolutions of readings greater which reflect various world and industrial standards.

  • Page 41: Using The Kwh Pulse Output Function

    USING THE DIAGNOSTIC OUTPUT FUNCTION PARAMETERS The RS-485 port of the 3300 ACM can also be used to provide As mentioned, the group of parameters accessed using the a kWh pulse output which can be used to control an external DIAGNOSTICS MODE? parameter are not typically used in relay.

  • Page 42: Measured Parameters

    This chapter provides detailed descriptions of each measured mode are listed in Figures 4.1.1a and 4.1.1b. parameter provided by the basic model 3300 ACM , and those Items in parentheses are not included in the display labels. equipped as possible measurement options. These are...
  • Page 43 DISPLAY LABELS DESCRIPTION Parameter Phase Basic Measurements (Voltage) A, B, C, Voltage, per phase and average, line-to-neutral and line-to-line. (Current) A, B, C, Current, per phase and average. (total) Instantaneous real power flow (kW), total of all phases. KWH TOT (total) Total accumulated real energy (i.e.
  • Page 44 DISPLAY LABELS DESCRIPTION Parameter Phase Optional Measurements (continued) a, b, c (total) Instantaneous reactive power flow (kVAR), per phase and total. KVR MIN a, b, c, (total) Minimums for instantaneous reactive power flow, per phase and total. KVR MAX a, b, c, (total) Maximums for instantaneous reactive power flow, per phase and total.

  • Page 45: Parameter Descriptions

    Beyond this value, readings will roll over to zero (0). The user can reset the value of all energy readings with which the 3300 ACM has been equipped (kWH, kVARH, kVAH). This can be performed using the CLEAR ALL HOURS? parameter from the front panel in programming mode, or via communications.

  • Page 46: Measurement Modes

    MEASUREMENT MODES The 3300 ACM provides a large number of optional thermal Some optional measured parameters provide additional demand measurements. Thermal demand values are calcu- measurement modes which are accessible from the front panel lated for real-time measurements using a method which is using the FUNCTION button.
  • Page 47 This has the eter. The 3300 ACM demand period will be reset, and all effect of improving the response time as compared to the fixed sliding window demand measurements will be cleared.

  • Page 48: Minima/Maxima

    MAX, respectively. NOTE Conventions used in regards to energy im- If the 3300 ACM has been equipped with one or more port/export are described in Section 4.3.4. minima/maxima parameters, the user can reset their values. This can be perfomed using the RESET MIN/MAX? param- eter from the front panel in programming mode, or via communications.

  • Page 49: Power Reading Polarities

    4.3.4 POWER READING POLARITIES Figure 4.3.4 illustrates how the 3300 ACM interprets and displays signed values for power, energy import/export indication, and power factor leading/lagging indication. NOTE The polarity of energy import/export read- ings can be reversed by reversing the polar- ity of the CTs connected to the 3300 ACM.

  • Page 50: Communications

    Future 3300 ACM firmware updates, when made available by Power Measurement, can be quickly performed via the RS-485 port; therefore, it is strongly recommended that all 3300 ACM devices be connected onto a communication bus when installed, even if remote communications are not initially required.
  • Page 51 The next step is to program the communication parameters of side the working range of the modem. Do- the 3300 ACM, and all other connected devices. The follow- ing so will cause that meter to cease com- ing parameters must be programmed via the front panel of municating.

  • Page 52: 3300 Acm -Tran Model Operation

    The TRAN (transducer) model of the 3300 ACM provides all compatible with the entire family of 3000 series digital the functions of the basic model 3300 ACM, except that it has instrumentation, which includes power meters, power no front panel display or keypad. All measured parameters demand controllers, and smart transducer interfaces.

  • Page 53: 3300 Rdt Remote Display Terminal

    SCADA system capabilities. ibility with the Modicon Modbus (see Section 5.8). This feature is provided as part of the basic model 3300 ACM, and The 3300 RDT looks and acts identical to the 3300 ACM by is user-selectable using the PROTOCOL parameter.

  • Page 54: Modicon Modbus Compatibility

    3300 ACMs. The 3300 ACM performs Modbus communications by emulating a Modicon 984 Controller. All measured data for the 3300 ACM can be accessed via Mechanical mounting, electrical wiring (other than communi- Modbus, including all real-time, thermal (running) or sliding cations), and general operation of units communicating on window demand, and minimum/maximum registers.
  • Page 55 Communications occurs from the Controller via the Modbus required RS-485 network connections. Plus network (using MSTR block), across the BM85 to the Modbus, and on to the 3300 ACM(s) via the RS-232C / RS- 485 converter. NOTE All communications between the BM85 and 3300 ACM(s)

  • Page 56: Plc/Ab Compatibility

    Unprotected Read and Unprotected Write. The Full Duplex DF1 protocol allows information and data to be efficiently NOTE transferred between an A-B PLC and a 3300 ACM. The PLC/AB option allows all real-time parameters, as well as Refer to converter manual for detailed in- kW total demand, kVar total demand, kVA total demand, formation regarding configuration.
  • Page 57 Courtesy of NationalSwitchgear.com...

  • Page 58: Mechanical & Mounting Dimensions

    APPENDIX A MECHANICAL & MOUNTING DIMENSIONS 1.00’’ Depth (25.4 mm) 7.66’’ (194.6 mm) 4.50’’ (114.3 mm) 2.14’’ (54.4 mm) 3.38’’ (85.9 mm) 3.83’’ (97.3 mm) 3.38’’ 2.3’’ (58.4 mm) (85.9 mm) 0.8’’ (20.3 mm) 2.00’’ (50.8 mm) 0.56’’ (14.2 mm) Existing ANSI C39.1 DISPLAY CABLE CONNECTOR Four #10/32 Mounting Studs...
  • Page 59 3.25” (82.6 mm) 6703 RAJPUR PLACE POWER Mounting Holes MEA SUREMENT VICTORIA, B.C. LTD . CANADA V8X 3X1 center-to-center 7.67’’ (194.8 mm) MODEL: 3300 ACM SERIAL NUMBER: OPTIONS: ELECTRICAL RATINGS DISPLAY TERMINAL STRIP Overall Height CABLE Large, barrier-style, 8.12’’ (206.3 mm) ’’...

  • Page 60: Display Module

    Either contact will The version number can be identified from the display module need to know the serial number of the 3300 ACM and the of the 3300 ACM by entering program mode and going to the current firmware version installed.

  • Page 61: 3300 Acm Technical Specifications

    3300 ACM Installation and Operation Manual Power Measurement Ltd. APPENDIX C 3300 ACM TECHNICAL SPECIFICATIONS ACCURACY, RESOLUTION, & RANGE Accuracy (% of Full Scale) Parameter Resolution Range Standard -HIACC Option Volts & Volts Demand 0.5 % 0.25 % 0.1 % 0 - 999,999 Amps &...
  • Page 62 Courtesy of NationalSwitchgear.com...

  • Page 63: Model/Ordering Information

    • kWh Total of all phases NOTE In situations where the power supply to the 3300 ACM might be unstable, the P120DC or P240DC power supply option should be used. These power supplies have much better immunity to power disturbances than the standard linear power supply provided by the basic model or P240 option.
  • Page 64 MIN. SLIDING MAX. SLIDING code. MEASUREMENT WIN. DEMAND WIN. DEMAND WIN. DEMAND Measurements marked by an asterisk (*) are not I avg available when using the 3300 ACM in a 3-wire Delta kW total configuration. kVAR total kVA total Basic Model...

  • Page 65: Warranty & Registration

    APPENDIX E WARRANTY & REGISTRATION WARRANTY Power Measurement Ltd. warrants its products to be free Pack the unit safely, preferably in the original ship- from manufacturing defects for three years from the date ping carton, and include the detailed report described of shipment from the factory.
  • Page 66 Courtesy of NationalSwitchgear.com...

  • Page 67: Troubleshooting

    APPENDIX F TROUBLESHOOTING A number of problems can cause the 3300 ACM not to If the kW or power factor readings are incorrect but function properly. This appendix lists a number of symptoms, voltage and current readings are correct: and explains how to correct them.
  • Page 68 Courtesy of NationalSwitchgear.com...

  • Page 69: Serial Communications Protocol

    Under no circumstances will a SLAVE device initiate a nications protocol used to pass commands, information and data into and out of the model 3300 ACM Power Meter. communications sequence. Provided is all the information necessary for a 3rd party OEM...

  • Page 70: Description Of The Packet Structure

    Slave device used. 00063C hex (or 1596 kW in decimal). For packets sent to/by the model 3300 ACM power meter, the Device Type sub-field is always set to 253 Each piece of metering data, as well as each setup parameter, decimal = FD Hex.

  • Page 71: Message Termination Field

    0A03 hex, the first command in data field will be composed of specific register values inter- the data field from the 3300 ACM will be to select page 10 (0A spersed with page change commands.

  • Page 72: Broadcast Packets

    Slave Devices. The time between the end of a MASTER To send broadcast commands to all 3300 ACM units on an STATION message request packet and the beginning of a RS-485 loop, the Device Type Sub-field must be 253 decimal or...

  • Page 73: Packet Communications

    This request packet is sent by the Master Station (the PC) to This section details all packet communications into and out of request that the 3300 ACM respond with all valid registers the model 3300 ACM power meter. There are only two within the range given by Start register and End register.
  • Page 74 To access the high-resolution values through communica- tions, a High-Resolution Result Request Flag must be appended to Beginning with firmware release 1.2.2.0, the 3300 ACM is the end of the Data Field. The Request Flag is a single byte capable of communicating high-resolution results if the containing the value FF hex.

  • Page 75: Write Registers Packet

    This packet allows the master to program the setup param- The basic model 3300 ACM is equipped with the following eters of a 3300 ACM meter. In order to write to a meter the registers: meter password must be known and placed in the password 10,11,12,13,14,15,16,17,20,21,22,23,33,54,55 location of the write registers packet.
  • Page 76 PG # REG # REG DESCRIPTION BASIC/ PG # REG # REG DESCRIPTION BASIC/ TYPE (b) OPTIONAL TYPE (b) OPTIONAL REAL TIME PARAMETERS: PAGE 0 Thermal Demand Values The Thermal demand values are a running average of the real time parameter PAGE Register Basic over a user specified time period from...
  • Page 77 PG # REG # REG DESCRIPTION BASIC/ PG # REG # REG DESCRIPTION BASIC/ TYPE (b) OPTIONAL TYPE (b) OPTIONAL MINIMUM VALUES: PAGE 1 Minimum Thermal Demand Values Van Dmd Opt. PAGE Register Basic Vbn Dmd Opt. Vcn Dmd Opt. Minimum Real Time Values Vln aver Dmd Opt.
  • Page 78 3300 ACM DATA REGISTERS PG # REG # REG DESCRIPTION BASIC/ PG # REG # REG DESCRIPTION BASIC/ TYPE (b) OPTIONAL TYPE (b) OPTIONAL MAXIMUM VALUES: PAGE 2 Maximum Thermal Demand Values Van Dmd Opt. PAGE Register Basic Vbn Dmd Opt.
  • Page 79 Figure G-3d 3300 ACM Setup Registers - Part IV PG # REG # REG DESCRIPTION BASIC/ TYPE (b) OPTIONAL SPECIAL PURPOSE REGISTERS: PAGE 10 10 0 Page Register Basic 10 1 PT primary voltage Basic 10 2 PT secondary voltage...

  • Page 80: Packet Examples

    PACKET EXAMPLES The following two sections contain examples of actual packets sent to a 3300 ACM meter, and the response packets issued by that meter. To make the packets easier to read the bytes have been blocked into groups of 4.

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