YASKAWA Inverter G7 Series

This innovative drive utilizes 3 level control to offer the best solution for challenging installations. Yaskawa is the only manufacturer to offer a low voltage drive with this architecture. 3 level technology minimizes drive induced problems associated with long motor cables and premature motor bearing failures. In addition, overall electrical noise is greatly reduced, resulting in the most problem free installations.

Features:
Performance Features

• Ratings: 0.5 to 150 HP, 240 VAC
  0.5 to 500 HP, 480 VAC
• Overload capacity: Heavy duty, 150% for 1 minute, 200% peak
• Starting torque: 150% at frequency;
  1.0Hz (V/f), 0.5Hz (open loop vector), 0.0Hz (closed loop vector)
• Output frequency: 0.01 to 400 Hz
• Output frequency resolution: 0.001 Hz
• Speed control range:
  40:1 (V/f), 200:1 (open loop vector), 1000:1 (closed loop vector)
• Speed regulation:
  1.0% (V/f), 0.2% (open loop vector),
  0.01% (closed loop vector)
• Speed response: 60 Hz
• Torque response: 300 Hz
• Speed reference resolution:
  0.01 Hz with digital reference,
  0.03 Hz with analog reference,
  0.01 Hz with network reference
• Speed/Torque/Position control
• Zero-servo mode
• Adjustable accel/decel: 0.01 to 6000 seconds
• S-Curve: 0.00 to 2.50 seconds, adjustable for each corner
• Stall prevention: Accel / decel / running
• Power loss ride-thru: Auto-restart or inertia ride-thru

Protective Features

• Torque limit (four quadrant)
• Electronic motor overload (UL 508C)
• Over-torque / under-torque detection
• Phase-to-phase and ground fault short circuit protection
• Over-current, over-voltage, and overtemperature protection
• Input / output phase loss protection
• Optically-isolated controls
• DC bus charge indicator
• Motor thermistor input

Inputs and Outputs

• Analog inputs:
  3 (2 programmable), -10 to +10 VDC (20k) or 4 to 20 mA (250), 11 bit plus sign
• Analog outputs:
  2 programmable, -10 to +10 VDC or 4-20 mA, 9 bit plus sign
• Digital inputs:
  12 (10 programmable), sinking or sourcing
• Digital outputs:
  5 programmable, 3 form A and 2 open collector
• Pulse train input:
  1 programmable, 32 kHz max
• Pulse train output:
  1 programmable, 32 kHz max
• Fault contact: 1 form C
• RS-232/422/485: Modbus RTU

Standards & Reliability

• UL, cUL, and CE listed
• MTBF: Exceeds 28 years

Design Features

• LCD keypad display: 5 lines x 16 characters, backlit, 7 languages, copy function
• Simple programming: Quick start and modified parameter groups
• Microprocessor logic: 32-bit
• Memory type: Flash memory for easy updates, custom software applications, and non-volatile program retention
• Control logic: 24 VDC (sinking or sourcing)
• Terminal strip: Quick disconnect
• Front cover: Split for easy wiring
• Heat sink fan: Plug-in with on-off control
• Motor auto-tuning: Static and rotational
• Speed search: Bi-directional into rotating motor
• Process control: PID, reference with PID trim
• Motor parameters: 2 sets
• Stopping methods: Ramp stop, coast stop, fast stop, or high-slip braking
• DC injection braking: Adjustable level and time
• Speed reference presets: 17 available
• Timer function: Programmable on / off delay
• Digital M.O.P.: Up / down / hold / reset reference
• Bias and gain: All analog and pulse train I/O
• Common DC bus capability: All models
• Dynamic braking transistor: 20 HP and below (240 VAC), 25 HP and below (480 VAC)
• DC bus choke: 25 HP and above (240 VAC) 30 HP and above (480 VAC)
• Twelve-pulse capability: 25 HP and above (240 VAC), 30 HP and above (480 VAC)

Service Conditions

• Enclosure: NEMA 1 or protected chassis
• Ambient service temperatures:
  -10 to 40°C (104°F) NEMA 1,
  -10 to 45°C (113°F) protected chassis
• Input frequency: 50 / 60 Hz ± 5%
• Input voltage: +10% / -15%, 3 phase, 240 or 480 VAC, phase insensitive
• Humidity: Non-condensing, 95% maximum
• Altitude: 3300 feet (1000 meters) w/o derate
• Vibration: 1G (10 to 20 Hz), 0.6G or less (20 to 55 Hz)

Three-Level 480V Inverter Benefits

• Lead length: Meets NEMA MG1 Part 31
• Four times the motor bearing life
• Quiet operation: 5-10 dB of noise reduction
• Common mode current: 50% reduction