Trade.Information

Product Name: E7L Drive Bypass

Product Description

Specifications and Features: - The E7L Drive/Bypass System is an E7 drive with Bypass and Touchpad Control. This variable torque AC drive system is designed specifically for HVAC applications in building automation. The E7 drive sets a new benchmark for cost, performance, benefits and quality. It includes numerous built-in features such as Network Communications, H/O/A, PI (set point control), and energy-saving functions. The E7 drive has embedded serial communication for the popular building automation protocols; Johnson Controls Metasys® N2 and Siemens APOGEE™ FLN, as well as Modbus. An optional LonWorks® interface card is also available. The Touchpad Control/Operator is equipped with 6 LED illuminated selector buttons: Hand, Off, Auto, Drive Select, Bypass Select and Drive Test. The E7L also features 11 other status LED indicators: Control Power, Drive Ready, Drive Run, Drive Fault, Bypass Run, Motor O/L, Safety Open, Damper/BAS Interlock, Smoke Purge, Auto Transfer, and Auto Run. DriveWizard software allows upload/download, as well as graphing and monitoring of drive parameters from a PC for ease of drive management. User parameter settings can be recovered at any time via the User Re-initialization function. Built-in PI maintains set point for closed loop control of fans and pumps for pressure, flow or temperature regulation and eliminates the need for closed loop output signals from a BAS. The PI includes feedback display, inverse, square root and differential control functions. The E7L Drive/Bypass standard inputs are Safety Interlocks, Auto Run/Stop, Damper/BAS Interlock, Remote Transfer to Bypass, Smoke Purge, 0-10 VDC or 4-20 mA input speed signal and an RS485 communication port. The standard outputs include 3 Programmable (Form C) Relays, 1 Motor Run (Form A) Relay (all output relays rated 250 VAC, 1 Amp) and 2 programmable analog outputs (0-10 VDC or 4-20 mA). A Sleep function provides significant energy savings by minimizing operating hours. Under-torque detection alerts the operator to conditions such as loss of load or broken belts. Energy savings control is an automatic output voltage adjustment responsive to actual motor load. Real-time energy saving is based on motor algorithms. Motor efficiency is increased by several percent. Built-in kW-hour and kW display eliminates the need for an external signal conditioner for energy monitoring. The standard enclosure is NEMA 1 with an option for NEMA 12 FVFF. Peformance Features VT Ratings: 1/2-25 HP, 208 VAC 1/2-30 HP, 230 / 240 VAC 1/2-60 HP, 480 VAC Overload capacity: 110% for 60 sec (150% peak) Starting torque: 100% at 3 Hz DC injection braking: at start or stop, adjustable, current limited (anti-windmilling) Motor preheat function Adjustable accel/decel: 0.1 to 6000 sec. Controlled speed range: 40:1 Critical frequency rejection: 3 selectable, adjustable bands Current limiting: 30-180% Energy $aving control Torque boost: full range, automatic Power loss ride-thru: 2 seconds Inertia ride-thru Auto restart after power loss or resettable fault, selectable, programmable Feedback signal loss detection Serial communication loss detection "Up/Down" floating point control capability Stationary motor auto-tuning Customizable monitor display Sleep function Run permissive input Ramp-to-stop or coast-to-stop selection Runtime changes in control and display Project-specific parameter reinitialization Copy keypad Protective Features Current-limited stall prevention Heat sink over-temperature, speed fold-back Cooling fan operating hours recorded Bi-directional start into rotating motor at synchronized speed DC bus charge indicator Current-limiting DC bus fuse Optically-Isolated controls Short circuit protection: Phase-phase and phase-neutral Ground fault protection Short circuit withstand rating: 65K RMS, 100K RMS with bus reactor Electronic motor overload: UL Current and torque limit Fault display: last 10 faults Fault trace capabilities Over torque and under torque protection Program security code "Hunting" prevention logic Input source protection (MOV’s) Input/output phase loss protection E7L Available Options Circuit Breaker/Motor Circuit Protection RFI/EMI filter Drive input fuses Drive input disconnect Input impedance Custom name plate LCD drive option 3-15 PSI transducer LonWorks communication NEMA 12 FVFF Design Features 32-bit microprocessor logic Flash upgradeable firmware Non-volatile memory, program retention Surface-mount devices Displacement power factor: 0.98 Output frequency: 0.1 to 120 Hz Frequency resolution: 0.06 Hz Frequency regulation: 0.1% Carrier frequency: selectable to 15 kHz 3% DC bus reactor: 30 HP, 240 VAC; 40-60 HP, 480 VAC (optional on lower ratings) LED display 24 VDC control logic Transmitter/Option power supply Input/output terminal status Timer function: Elapsed time, Delay on start, Delay on stop Embedded Metasys N2, APOGEE FLN, and Modbus Volts/hertz ratio: Preset and programmable V/Hz patterns Remote speed command: 0-10 VDC or 4-20 mA, direct or reverse-acting Setpoint (PI) control with inverse or square root input, differential control via two feedback capability Feedback signal: low pass filter Speed command: bias and gain Meter Functions: Volt, amp, kilowatt, elapsed run time, speed command Output Current Transformers: qty 3 UL, cUL listed and CE marked; IEC 146; MTBF: exceeds 28 years Emergency Override Feature Bumpless transfer, between Hand & Auto Motor preheat feature Cooling tower fan, de-ice feature Service Conditions Ambient Temperature: -10°C to 40°C (14° F to 104° F) Humidity: 95% RH, non-condensing Altitude: 3300 ft; higher by derate Input voltage: +10%/-15% Input frequency: 50/60 Hz ± 5% 3-phase, 3-wire, phase sequence insensitive Plenum rated (UL 1995) Bypass Features Bypass and Drive are factory assembled, and electrically interlocked, utilizing 2 contactors with Electronic Control System NEMA 1 metal enclosure standard Input disconnect switch with a lockable, through-the-door operating mechanism Sealed Bypass Control Keypad mounted on front door with integrated Drive touchpad control Drive Output and Bypass contactors Bi-metallic thermal overload relay, provides motor protection in both the "drive" and "bypass" modes 120 VAC control power transformer Control and safety circuit terminal strip (Selectable for 120 VAC or 24 VDC input) Indicator LED’s for Control Power, Drive Ready, Drive Run, Drive Selected, Drive Fault, Drive Test, Bypass Selected, Bypass Run, Motor OL, Safety Open, Damper/BAS, Auto Run, Auto Transfer, Smoke Purge, Hand Mode, Off Mode, and Auto Mode. 3 programmable Form C contacts (250 VAC, 1 Amp) for: Motor Run, Damper/BAS, Drive Run, Hand Mode, Auto Mode, Bypass Run, Fault or 1 selectable from the drive menu Remote Run/Stop via contact closure or serial communication Input speed command via 0-10 VDC, 4-20 mA or serial communication 2 Programmable analog outputs (0-10 VDC or 4-20 mA ) Damper control circuit Programmable auto transfer to bypass on drive fault Remote transfer to bypass via contact closure Smoke purge function via contact closure Safety (freezestat, firestat, duct pressure, etc) interlock Building Automation System (BAS) interlock