A drive dedicated to variable speed control for HVAC applications

Size: px

Start display at page:

Download "A drive dedicated to variable speed control for HVAC applications"

Beatrix Quinn
5 years ago
Views:

A drive dedicated to variable speed control for HVAC applications Designed for easy installation in mechanical fan and pump systems with reliable connectivity to building automation networks.

1 A drive dedicated to variable speed control for HVAC applications Designed for easy installation in mechanical fan and pump systems with reliable connectivity to building automation networks. VTAC 9 Drive with Bypass Option Electro-mechanical bypass control provides easy-to-read indication of motor operation. The complete unit is factory assembled and tested with drive to ensure proper operation. The complete assembly is UL 508C listed. The VTAC 9 is a microprocessor based Pulse Width Modulated (PWM) variable frequency AC drive. The VTAC 9 takes advantage of a highlevel microprocessor and robust power circuit to deliver trouble-free operation. Reliance Electric VTAC drives are dedicated to the needs of the HVAC industry. The icon-based drive keypad simplifies drive set-up, monitoring and operation. The bypass control and display board provides quick and visible notification of HVAC system status along with easy-to-use selector switches for Drive/Drive Test/Bypass and Hand/ Off/Auto. Main Features Ratings: 5-20 HP at 480V AC and 3-10 HP at 208V AC IGBT Switching: 4 khz carrier frequency standard adjustable up to 10 khz for quieter motor operation. Controlled IGBT rise time to minimize reflected waves and associated voltage spike on motor insulation systems. Harmonics Mitigation: Designed to comply with IEEE guidelines for harmonic distortion. DC bus inductor is included standard to minimize harmonic distortion (7.5 HP and larger at 480V AC; 5 HP and larger at 208V AC). Maximum Uptime: Intelligent Thermal Management (ITM ) system monitors drive heatsink temperature that can automatically change drive operating conditions to avoid drive shutdown during ambient over-temperature conditions when enabled. - Overcurrent rating of 110% for 60 seconds and 150% for 3 seconds - Full-digital PWM operation utilizing microprocessor control for increased reliability and temperature insensitivity - Up to 100,000 AIC ratings for connection to high capacity power line feeds - UL and NEC approved electronic motor overload protection Operator Interface: Detachable 5-line multi-language LCD keypad with icons for drive setup, control, fault indication, diagnostics and metering. Keypad copies configuration files for easy duplication of setup parameters from one drive to another. PC Configuration: Drive serial interface port for configuration, monitoring and diagnostics.

2 HVAC Driven Features Selectable PWM carrier frequency for system acoustical tuning S curve acceleration and deceleration for smooth speed transitioning of high inertia loads Power line dip ride through capability for up to 10 seconds with energy recovery from high inertia loads Three frequency avoidance bands with adjustable bandwidth to lock out mechanical resonance points Adjustable auto restart (number of restarts and time delay between attempts are selectable). Display indicates when controller is attempting a restart. Restart into rotating (windmilling) loads without tripping with selectable speed search sequencing Simple connection to fire and life safety systems: - Smoke and fire purge as well as freezestat and other selectable interlocks - HVAC-dedicated Purge digital input: can override Stop and Run Enable commands from network or terminal strip Line-to-line and Line-to-ground output short circuit protection during running and starting Eight programmable pre-set speeds Two 0-20 ma, 4-20 ma or 0-10V DC analog inputs for speed reference and sensor feedback 0-10V DC output proportional to speed or load Two Form C relay outputs Indication LED s on the drive for Run/Stop/Fault and Communications status Building Automation Network Connectivity Internally mounted communication cards to allow network connectivity Option for single RS485 network card with Johnson Metasys N2, Siemens Building Technologies P1-FLN, and Modbus protocols, field selectable by dip switches Option for BACnet or Lonworks Packaged Options Enclosures for housing modifications are available. Style A - Main Input Disconnect and Input Fuses Style B - Main Input Disconnect, Input Fuses; Three-Contactor Bypass with cover control and indicating lights Special options such as Input Line Reactor, Pressure-to-Electrical Transducer, and Multi-motor Operation are also available. Drive Keypad Standard detachable digital keypad functions: - Password protection - Start/Stop - Hand/Auto - Basic and advanced level parameters - Icon-driven programming procedures - Multi-line & multi-language LCD graphical display of motor information including: - Speed reference - Motor volts - Motor amps - Motor speed - kw - Elapsed time meter - PI Loop Values Alphanumeric display and time stamp of the following fault conditions: - User Interlock Open - High DC Bus Voltage - Low DC Bus Voltage - Over-Current (Running, Accelerating, or Decelerating) - Over-Frequency - Over-Temperature - Electronic Motor Overload - Motor Phase Loss Option for LED keypad or no keypad. Keypad copies configuration files for easy duplication of setup parameters from one drive to another. VTAC 9 LCD Keypad

VTAC 9 Drive Bypass Although the reliability of variable frequency drives has significantly improved, bypass continues to be a popular option in the HVAC industry to satisfy building control needs

Three-contactor electro-mechanical bypass active down to -30% of rated line voltage Bypass Control and Status Display Quick visual indication of drive/ bypass status through LEDs and schematic

3 VTAC 9 Drive Bypass Although the reliability of variable frequency drives has significantly improved, bypass continues to be a popular option in the HVAC industry to satisfy building control needs under the most adverse operating conditions. Three-contactor electro-mechanical bypass active down to -30% of rated line voltage Bypass Control and Status Display Quick visual indication of drive/ bypass status through LEDs and schematic diagram. Large selector switches make it easy for operator to change modes. Eliminates guesswork prior to troubleshooting for run and fault status. All contactors are electrically interlocked Class 20 motor overload protection in bypass circuit Control power transformer fused on both primary and secondary for protection during power disturbances Optional Class J 200,000 AIC fuses Single customer terminal block for all field wiring Hand/Off/Auto and Drive/Drive Test/Bypass switch for operation mode selection Operation and diagnostic display with LEDs to indicate Run and Fault modes Special options such as Input Line Reactor, Pressure-to-Electrical Transducer, and Multi-motor Operation are also available. Automatic bypass operation standard in the assembly Remote activation of bypass standard in the assembly VTAC 9 Bypass Unit 1. Bypass control and status display board 2. Drive/Drive Test/Bypass switch and Hand/Off/Auto switch 3. Main Input Disconnect Handle 4. Drive Main Input Contactor 5. Drive Motor Output Contactor 6. Bypass Motor Overload Relay 7. Drive Bypass Contactor 8. Primary Fuses V Control Transformer 10. Field Control Wiring Terminal Block 11. Door Interlocked Main Input Line Disconnect, Fused or Nonfused 12. Field Input Power Wiring Terminal Block Bypass Control and Status Display 1. Hand/Off/Auto Switch 2. Drive/Drive Test/Bypass Switch 3. Status Display LEDs - Ready - Interlock Open - Drive Output Enable - Purge - Bypass Trip - Bypass Run

4 Drive Specifications and Dimensions Category Specifications VTAC 9 Drive 208V AC Drive 480V AC Drive Agency Certification AC Input Overvoltage Trip 286 V AC 570V AC AC Input Undervoltage Trip 113 V AC 280V AC Bus Overvoltage Trip 405 V AC 810V AC Bus Undervoltage Trip 160 V AC 407V AC Nominal Bus Voltage 290 V AC 648V AC Heat Sink Thermistor Monitored by microprocessor overtemp trip (Intelligent Thermal Management - ITM ) Drive Overcurrent Trip: Software Current Limit Hardware Current Limit Instantaneous Current Limit Line transients Control Logic Noise Immunity Power Ride-Thru Logic Control Ride-Thru Ground Fault Trip Short Circuit Trip Motor Lead Length % of rated current 200% of rated current (typical) % of rated current (dependent on drive rating) up to 6000 volts peak per IEEE C Showering arc transients up to 1500V peak 15 milliseconds at full load 0.5 seconds minimum, 2 seconds typical Phase-to-ground on drive output Phase-to-phase on drive output 200 feet maximum* The drive is designed to meet the following specifications: NFPA 70 - US National Electrical Code NEMA ICS Safety standards for Construction and Guide for Selection, Installation and Operation of Adjustable Speed Drive Systems. NEMA Enclosures for Electrical Equipment IEC International Electrical Code. FCC Part 15 UL and cul Listed to UL508C and CAN/CSA-C2.2 No. 14-M91 Marked for all applicable European Directives EMC Directive (89/336/EEC) Emissions: EN Adjustable Speed electrical power drive systems Part 3 Immunity: EN Second Environment, Restricted Distribution Low Voltage Directive (73/23/EEC): EN Safety of Machinery- Electrical Equipment of Machines, EN Electronic Equipment for use in Power Installations Environment Altitude Ambient Operating Temperature without derating: Open Type NEMA Type 1 NEMA Type 12 Storage Temperature (all const.) Relative Humidity Shock Vibration 1000 m (3300 ft.) max. without derating 0 to 50ºC (32 to 122ºF) 0 to 40ºC (32 to 104ºF) 0 to 40ºC (32 to 104ºF) 40 to 70ºC ( 40 to 158ºF) 5 to 95% non-condensing 15G peak for 11ms duration (1.0 ms) mm (0.006 in.) displacement, 1G peak * Drive is designed not to generate potentially damaging voltage pulses based on limits set by NEMA MG1 section For motor lead lengths up to 200 feet, minimum rise time is greater that 0.1 microseconds, and maximum voltage peak is less than 1600 volts per this standard.

5 Drive Specifications and Dimensions (contd) Category Specifications Electrical Control Voltage Tolerance Frequency Tolerance Input Phases Displacement Power Factor Efficiency Max. Short Circuit Current Rating Using Recommended Fuse or Circuit Breaker Type Method Carrier Frequency Output Voltage Range Output Frequency Range Frequency Accuracy: Digital Input Analog Input Selectable Motor Control Stop Modes Accel/Decel Intermittent Overload Current Limit Capability Electronic Motor Overload Control (Inputs, Outputs, Power Supplies) Analog Input 1, Differential Voltage Input: Signal Level Differential Input Resistance Initial Accuracy C) Input Processing Period Analog Input 1, Differential Current Input: Signal level Differential Input Resistance Initial Accuracy C) Input Processing Period Analog Input 2, Differential Voltage Input: Signal Level Differential Input Resistance Initial Accuracy C) Common Mode Rejection Ratio Input Processing Period 10% of minimum, +10% of maximum Hz. Three-phase input provides full rating for all drives. Single-phase operation provides 50% of rated current. Range between 1.0 and 0.95 lagging over the entire speed range) 97.5% at rated amps, nominal line volts. Maximum short circuit current rating to match specified fuse/circuit breaker capability. Sine coded PWM with programmable carrier frequency khz. Drive rating based on 4 khz 0 to rated motor voltage 0 to 400 Hz. Within ±0.01% of set output frequency. Within ±0.4% of maximum output frequency. Standard V/Hz with full custom capability. Multiple programmable stop modes including - Ramp, Coast, DC-Brake, Ramp-to- Hold and S-curve. Two independently programmable accel and decel times. Each time may be programmed from seconds in 0.1 second increments 110% Overload capability for up to 1 minute 150% Overload capability for up to 3 seconds Proactive Current Limit programmable from 20 to 160% of rated output current. Independently programmable proportional and integral gain. Class 10 protection with speed sensitive response. Investigated by U.L. to comply with N.E.C. Article 430. U.L. File E59272, volume to +10V 60k9 17V 0.3% ESD protected (6 kv contact discharge, 8 kv air discharge) 0(4) to 20mA V 0.3% ESD protected (6 kv contact discharge, 8 kv air discharge) -10V to +10V 88k9 165V 0.3% 70dB up to 500Hz over temperature range ESD protected (6 kv contact discharge, 8 kv air discharge)

6 Drive Specifications and Dimensions (contd) Category Specifications Control (Inputs, Outputs, Power Supplies) Analog Input 2, Differential Current Input: Signal level Differential Input Resistance Initial Accuracy C) Common Mode Rejection Ratio Input Processing Period Analog Output: Analog Output Voltage Range Loading Impedance Accuracy Over Temperature Range Frequency of Output Waveform Output Processing Period Reference Power Supply: Output Voltage Potentiometer Resistance Range Accuracy Over Temperature Range 24V Power Supply: Output Voltage Output Current Six Digital Inputs: Input Voltage Logic Thresholds Input Resistance Assertion Response (Hardware Only) Negation Response (Hardware Only) Two Form C Relay Outputs: Maximum Contact Voltage Contact Rating for Resistive Loads Contact Switching for Resistive Loads Contact Rating for Inductive Loads Contact Switching for Inductive Loads Test Voltage 0(4)-20mA V 0.3% 70dB up to 500Hz over temp range ESD protected (6 kv contact discharge, 8 kv air discharge) 0 to +10V 2k9 minimum 2.35% maximum 160Hz maximum 10V 2k9 to 10k9 2.35% maximum 24V to 28V 250mA maximum 25V 24V (nominal) logic 0: V in < 5V; logic 1: V in > 8V 2k9 25V 9ms maximum 1ms maximum 250V AC, 220V DC 0.40 A at 125V AC, 2 A at 30V DC 50 VA, 60 W 0.20 A at 125V AC, 1 A at 30V DC 25 VA, 30 W 1900V DC for one minute

7 Dimensions and Ratings Drive Frame B (9.24 H x 6.74 W x 7.08 D) Power Volts Continuous Amps Amps for 1 Minute Wt (lbs) 3 HP HP Frame C (11.81 H x 7.32 W x 7.08 D) Power Volts Continuous Amps Amps for 1 Minute Wt (lbs) 5 HP HP HP Frame D (13.78 H x 8.68 W x 7.10 D) Power Volts Continuous Amps Amps for 1 Minute Wt (lbs) 7.5 HP HP HP HP Drive with Style A Option Frame Size HP at 208 V A B C Wt (lbs) Frame B 5 HP Frame C 5 HP Frame D HP Frame Size HP at 480 V A B C Wt (lbs) Frame B 5 HP Frame C HP Frame D HP Mounting Fastener Locations Frame Size D E F Frame B Frame C Frame D

8 Drive with Style B Option Frame Size HP at 208 V A B C Wt (lbs) Frame B 1-3 HP Frame C 5 HP Frame D HP Frame Size HP at 480 V A B C Wt (lbs) Frame B 1-5 HP Frame C HP Frame D HP Mounting Fastener Locations Frame Size D E F Frame B Frame C Frame D This document located at: NOTE: This material is not intended to provide operational instructions. Appropriate Reliance Electric Drives instruction manuals precautions should be studied prior to installation, operation, or maintenance of equipment. Publication D April Rockwell Automation Corporation. All Rights Reserved

PowerFlex 400 AC Drive Guide Specification

PowerFlex 400 AC Drive Guide Specification Adjustable Frequency Drives with Bypass 3.0 50HP @ 208V AC 3.0 350HP @ 480V AC PART 1 GENERAL 1.01 Quality Assurance A. The manufacturer shall have minimum 5