The E7N Bypass package is a 2-contactor style bypass with HOA touchpad control, allowing motor operation from either the drive or across the line. This allows continued operation even if the E7 drive is disabled, by fault or intention. Drive maintenance must be delayed until line power can be removed. The E7 and E7N Bypass have been designed for flexibility in providing the features and options commonly specified by facility designers.

The E7 Drive is a variable torque AC drive, designed specifically for HVAC applications in building automation. A new benchmark for size, cost, performance, benefits, and quality, the E7 includes numerous built-in features such as Network Communications, PI control and energy savings functions.

The E7 has embedded communications for the popular building automation protocols, Johnson Controls Metasys N2 and Siemens APOGEE, as well as Modbus. An optional LonWorks or BACnet interface card is available.

Performance Features VT Ratings: 1/2-25 HP, 208 VAC 1/2-50 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-windmill-ing) 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 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 (MOVs) Input/output phase loss protection E7N Available Options Circuit breaker (MCP) disconnect Main disconnect Semi-conductor fast acting fuses Drive input fused disconnect RFI cap network 3% or 5% line impedance LCD "Alpha" drive keypad Pneumatic pressure transducer : 3-15 psi BACnet and LonWorks communication Engraved nameplate 3-Contactor Bypass

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: 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 programma-ble 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 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 Bypass Features Bypass and Drive are factory assembled 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 Integrated Drive touchpad control Drive Output and Bypass contactors Bi-metallic thermal overload relay, pro-vides 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/Rem 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 select-able 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

E7N Narrow Bypass - 1/2-50HP, 208 and 480V, 3-phase input, NEMA 1 enclosure, with factory installed and wired options

208V | 480V

Rated InputVoltage	Bypass Model Number	Rated Output Current (Amps)	Nominal HP1
208V	E7NVD002	2.4	1/2
	E7NVD003	3.5	3/4
	E7NVD004	4.6	1
208V	E7NVD007	7.5	2
	E7NVD010	10.6	3
	E7NVD016	16.7	5
208V	E7NVD024	24.2	7.5
	E7NVD030	30.8	10
	E7NVD046	46.2	15
208V	E7NVD059	59.4	20
	E7NVD074	74.8	25

 

Rated InputVoltage	Bypass Model Number	Rated Output Current (Amps)	Nominal HP1
480V	E7NVB001	1.6	1/2
			3/4
	E7NVB002	2.1	1
480V	E7NVB003	3.4	2
	E7NVB004	4.8	3
	E7NVB007	7.6	5
480V	E7NVB011	11	7.5
	E7NVB014	14	10
480V	E7NVB021	21	15
	E7NVB027	27	20
	E7NVB034	34	25
480V	E7NVB040	40	30
	E7NVB052	52	40
	E7NVB065	65	50

 

1. Horsepower rating is based on standard NEMA B 4-pole motor design as represented in NEC table 430.150 Full-Load Current, Three-Phase Alternating Current Motors