AmpCom Consultant Specification /
AmpCom - Networkable Motor & Energy Management System (MC16) /
Products and Brands
Motor Control & Drives
Version : 0.7

Technical Specification – [AmpCom –Networkable Motor & Energy Management System]

Table of Contents

1General

1.1Scope

1.2Standards and Codes

2Abbreviations

3AmpCom...... 6

3.1General...... 6

3.2Construction...... 7

3.3Protection Functions...... 8

3.4Metering Functions...... 11

3.5Control Functions...... 11

3.6Communications...... 12

3.7Statistical Data...... 12

3.8Diagnostic Historical Data...... 12

1General

1.1Scope

This specification covers motor and energy management systems primarily being used for protecting motors and various motor load applications. It also covers motor and energy related diagnostics over Profibus-DP and Modbus Ethernet/TCP networks.

1.2Standards and Codes

All motor & energy management systemsshall comply with the construction and operational requirements as stipulated by International standards and Australian/New Zealand standards.

In the event of conflicting requirements between standards and codes, the Australian requirements shall apply.

Applicable standards include but are not limited to:

AS/NZS 60947.1-2007 / Low-voltage switchgear and controlgear – General rules
AS/NZS 60947.4.1-2004
AS/NZS 60947.5.1-2004 / Low-voltage switchgear and controlgear – Contactors and motor-starters – Electromechanical contactors and motor-starters
Low voltage switchgear and controlgear – Control circuit devices and switching elements – electromechanical control circuit devices

2Abbreviations

The following abbreviations are used throughout this specification:

CPU / Central Processing Unit
SPST / Single Pole Single Throw
N.O. / Normally Open
AC-1 / Utilisation Category of Control for Non Inductive or Slightly Inductive loads, resistance furnaces & VSDs according to AS/NZS 60947.5.1-2004
AC-15 / Utilisation Category of Control for A.C. electromagnetic loads according to AS/NZS 60947.5.1-2004
DC-12 / Utilisation Category of Control for Control of resistive and solid-state loads according to AS/NZS 60947.5.1-2004
DC-13 / Utilisation Category for Control of D.C. electromagnets according to AS/NZS 60947.5.2-2004
RTD / Resistance Temperature Detector
PTC / Positive Temperature Coeffecient
AC / Alternating Current
V / Volts
DC / Direct Current
I/O / Inputs and Outputs
mA / Milli Amperes
LED / Light-Emitting Diode
Hz / Hertz
°C / Degrees Centigrade
IP20 / International Protection Rating according to AS/NZS 60529-2004 – Solid particle protection >12.5mm (fingers or similar objects)
IP65 / International Protection Rating according to AS/NZS 60529-2004 – Solid particle protection – dust tight (no ingress of dust; complete protection against contact) and Liquid Ingress Protection – water jets (water projected by a nozzle (6.3mm) against enclosure from any direction shall have no harmful effects)
IN / Nominal Current
VN / Nominal Voltage
FLA / Full load amperes
m / Meters
mm / Milli Meters
A / Amperes
TCU / Thermal Capacity Utilised
kW / Kilo Watts
kVAR / Kilo Volt-Ampere Reduction
kVA / Kilo Volt-Ampere
RJ11 / Registered Jack 11 connector
PT100 / Platinum Thermometer - 100 ohms at 0°C
RS485 / Standard defining the electrical characteristics of drivers and receivers for use in balanced digital multipoint systems published by the Telecommunications Industry Association/Electronic Industries Alliance.
GSD / General Station Description – Profibus devices

3AmpCom – Motor & Energy Management System

3.1General

  • The motor and energy management system shall consist of a Current/Voltage Measurement Module and a Main CPU Module.
  • The motor and energy managements system shall have a current operating range of 0.1 and 2000 amperes.
  • The motor and energy management system shall provide current, voltage, power and temperature measurement-based protection functions.
  • Current and Voltage measurements shall be performed by a three-phase Current/Voltage Modulethat provides electrical isolation between the primary measurement circuit and the Main CPU Module.
  • The three-phase Current/Voltage Module shall be capable of primary pass through of motor cables up to 5A.
  • In medium and high voltage applications or low voltage applications above 5A, the Current/Voltage Module shall be wired in series withsecondary windings from primary current transformers with a secondary current rating of 5 amperes.
  • The three-phase voltage inputs for the Current/Voltage Module shall be rated to 690V AC.
  • The three-phase voltage inputs on the Current/Voltageinputs shall accept inputs from potential transformers in star, deltaor open delta configurations.
  • Two SPST output relays shall be available on the Current/Voltage modulefor the motor startercontrol circuit.
  • Option for up to 20 configurable SPST output relays (10 x expansion I/O modules) can be added to the Main CPU Module.
  • All output relay contacts shall be rated AC-1, AC-15, DC-12 and DC-13.
  • All output relays shall be programmable for N.O., N.C. or combination of both operation.
  • All output relays shall default to N.O. when auxiliary power is removed from the Main CPU Module ensuring Fail-Safe operation.
  • The Main CPU Module shall provide a minimum of threeinputs that are configurablefor function.
  • Terminal connections and monitoring circuitry for connection of a zero sequence (corebalance) current transformer for Earth Fault and Earth Leakage detection shall be available as an option to the Main CPU Module.
  • Option for up to 20 inputs (10 x expansion I/O Modules) can be added to the Main CPU Module.
  • All inputs shall be configurable to accept digital Contact Resistance or NPN inputs. All inputs shall also be configurable to accept temperature PTC or PT100 inputs or combination of either digital or temepareture.
  • The configured temperature PTC inputs shall provide PTC protection and activate a Virtual Alarm. This Virtual Alarm’s resistance setpoint shall be at 3.1kΩ and the Virtual Alarm’s reset level shall be ≤ 1.65kΩ.
  • The configured temperature PTC inputs shall also provide detection for PTC short circuits (< 20Ω) and PTC open circuits (> 10kΩ).
  • The configured temperature PT100 inputs’ measurement range shall be between -50° to 850° C with a resolution of 1° C.
  • PT100 input Virtual Alarms shall be configurable to activate on , >, ≤ or ≥ of any of the values between the PT100 temperature measuring range.
  • The configured temperature PT100 inputs shall also provide detection for PT100 short circuits (< 15Ω) and PT100 open circuits
  • The motor and energy management system shall have an operating power supply of 24V DC.
  • The motor and energy management system shall be programmed by means of PC software and with the aid of a PC interface.
  • LED indicators shall provide status indication that the motor and energy management system is enabled & configured andwhether a communication bus fault is present.
  • The motor and energy management system shall be equipped with an RS485 port atthe Main CPU Module with a RJ11 connector and 3-wire terminals. This port shall facilitate system monitoring andprogramming.
  • The motor and energy management system shall continue to provide a high level of motor protection in the event of saturationof primary current transformers when used.

3.2Construction

  • The motor and energy management system shall be modular in construction such that the functionality provided can be configurable/expandable through the addition of field installable and pluggable ExpansionModules.
  • The dimensions of the Current/Voltage Module shall not exceed 90mm height x53.7mm width x 63.2mm mounted depth.
  • The dimensions of the Main CPU Module shall not exceed 90mm height x 35mm width x 63.2mm mounted depth.
  • Each additional Expansion Module (Earth Leakage & I/O) shall add no more than 17.5mm to the width of the Main CPU Module and maintain the same height and width as the Main CPU Module.
  • If required, Expansion Modules shall be detached from the Main CPU Module with the aid of a Separate Mount Coupler Module.
  • The motor management system shall be rated to IP65 when installed in an appropriateenclosure.
  • Wiring terminals shall provide IP20 finger protection.
  • The motor and energy management system and accessories shall be rated for an operating environment of -25to +55°C.
  • The motor and energy management system shall be capable of operating in an environment with a relativehumidity range of 0 to 90%, non-condensing.

3.3Protection Functions

The motor and energy management system shall incorporate the following protection function capabilities:

Current Elements

  • Thermal overload (49)

- The thermal overload computational algorithm shall employ a model that givesindividual consideration to the motor windings threshold.

- FLA (IN) setting range of 0.1 to 2000A

- Service factor setting range of 0.4 to 2.0

- Locked rotor current setting range of 250 to 1200% IN

- Locked rotor cold and hot time setting range of 1.0 to 18000 seconds

- Reset mode adjustable for manual or automatic reset

- Reset level setting range of 1 to 99% TCU

- Warning level setting range of 1 to 99% TCU

- Thermal start inhibit setting range of 1 to 99 % TCU

- Customization settings for cooling time and running state time constants

- Adjustment settings for second speed ratings

  • Current Imbalance

- Trip & Warning Setting range of 0 to 99%

- Trip Warningdelay setting range of 0 to 2000 seconds

  • Earth fault – residual method (64)

- Trip setting range of 1 to 200% IN

- Trip delay setting range of 0.1 to 99.9 seconds

  • Undercurrent – load loss (37)

- Trip & Warning setting range of 1 to 99% IN

- Trip & Warning delay setting range of 1 to 300 seconds

  • Overcurrent – load jam (50)

- Trip & Warning setting range of 10 to 600% IN

- Trip & Warning delay setting range of 0.0 to 120.0 seconds

  • Inverse Sequence Current (46)

- Setting for Time Dependent/Independent function

- Trip & Warning setting range of 10 to 600% IN

- Trip & Warning delay setting range of 0.0 to 120.0 seconds

  • Current Total Harmonic Distortion (Up to 32nd Harmonic)

- Trip & Warning setting range of 10 to 600% IN

- Trip & Warning delay setting range of 1 to 1999 seconds

Voltage Elements

  • Undervoltage (27S)

- Trip & Warning setting range of 10 to 100% Vnom

- Trip & Warning delay setting range of 1 to 120 seconds

  • Overvoltage (59)

- Trip & Warning setting range of 0.1 to 760 Volts

- Trip & Warning delay setting range of 1 to 30000 seconds

  • Phase Reversal (47) – voltage based

- Setting to enable/disable function

- A trip shall occur 0.5 second after application of three-phase voltage and phase rotationdetermined

  • Phase Loss (27D) – voltage based

- Setting to enable/disable function

- Trip when VN drops below 70% within 3 seconds

  • Voltage Assymetry

- Trip & Warning setting range of 1 to 200% VN

- Trip & Warning delay setting range of 1 to 30000 seconds

  • Voltage Total Harmonic Distortion (Up to 32nd Harmonic)

- Trip & Warning setting range of 0.1 to 760 Volts

- Trip & Warning delay setting range of 1 to 1999 seconds

Power Elements

  • Under and Over Real Power

- Trip & Warning setting range of 1 to 25,000 kW

- Trip & Warning delay setting range of 0 to 2000 seconds

  • Power Factor

- Lead and lag Trip & Warning setting ranges of 0.05 to 0.99

- Trip & Warning delay setting range of 0 to 2000 seconds

  • Reactive Power

- Negative and positive Trip & Warning setting ranges of 1 to 25,000 kVAR

- Trip delay setting range of 0 to 2000 seconds

  • Over and Under Apparent Power

- Trip & Warning setting range of 1 to 25,000 kVA

- Trip & Warning delay setting range of 0 to 2000 seconds

  • Under and Over Frequency

- Trip & Warning setting range of 1 to 250Hz

- Trip & Warning delay setting range of 0 to 2000 seconds

Temperature Elements

  • PTC Thermistor

- Reset mode adjustable for manual or automatic reset

  • RTD PT100

- Each channel shall be individually settable

- Trip & Warning setting range of -50 to 850° C

Motor Starting Elements

  • Start Inhibit (66)

- Setting range of 1 to 100 starts/hour

- Setting range for minimum time between starts of 1 to 5400seconds

- Setting range for minimum time between stop and start of 1 to 5400 seconds

  • Emergency Start

- Implemented by the use of the pre-defined configuration

  • Reduced Voltage Starting (Star-Delta Starting)

- Implemented by the use of the pre-defined configuration

  • Reversing motor control

- Implemented by the use of the pre-defined configuration

Other Elements

  • Remote Trip

- The motor & energy management system shall have provisions for tripping from an external device (e.g.vibration switch) through contact closure to an assigned input.

3.4Metering Functions

The motor & energy management system shall offer the following metering functions:

  • Individual phase currents in amperes (± 1% accuracy)
  • Average current in amperes (± 2% accuracy)
  • Average motor load as a percentage of the motor full load ampere rating (± 2% accuracy)
  • Percent current imbalance (± 2% accuracy)
  • Residual ground fault current in amperes (± 2% accuracy)
  • Zero sequence (core balance) ground fault current in amperes (± 2% accuracy)
  • Phase-to-phase voltage measurements (± 1% accuracy)
  • Three-phase average phase-to-phase voltage measurements (± 2% accuracy)
  • Phase-to-neutral voltage measurements (± 1% accuracy)
  • Three-phase average phase-to-neutral voltage measurements (± 2% accuracy)
  • Percent voltage asymmetry (± 2% accuracy)
  • Real three-phase power expressed in kW (± 1% accuracy)
  • Reactive three-phase power expressed in kVAR (± 2% accuracy)
  • Apparent three-phase power expressed in kVA (± 5% accuracy)
  • Power factor (± 2% accuracy)
  • Frequency (± 0.1 Hz of reading)
  • Individual RTD temperature measurements in °C (± 0.5°C accuracy)

3.5Control Functions

  • The motor & energy management system shall have provisions to reset a trip through contact closure to an assigned input.
  • The motor & energy management systemshall incorporate control capability for star (wye)-delta motor applications.
  • The motor & energy management systemshall provide two on-delay timers for control purposes. The timers shall have an adjustable range of 0 to 6500 seconds.

3.6Communications

  • Network communications shall be accomplished through the Main CPU Module expansion slot in the motor & energy management system. Communication options shall include:

- Modbus Ethernet/TCP

- Profibus-DP

  • The Profibus-DP version shall be supported by a GSD file.

3.7Statistical Data

The motor & energy management systemshall provide the following statistical values related to motor operation.

-Percent thermal capacity utilized (%TCU)

-Active Energy – kWh

-Reactive Energy -kVARh

-Total Number of Starts

-Number of Starts per Hour

-Time before trip (associated with ANSI 49)

-Time before restart (associated with ANSI 66)

- Total Running Hours

- Partial Running Hours

- Maximum Motor Start Time (associated with ANSI 51LR)

3.8Diagnostic Historical Data

The motor & energy management systemshall store diagnostic data events. The data chosen shall record based on:

  • Event
  • Time Interval
  • Start Up

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