Chapter 1: Getting Started
Page 1–14
DuRApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
speCifiCaTions appliCable To all gs4 models
GS4 General Specifications (Applicable to All Models)
Control
Characteristics
Control Method 1: V/F (V/Hz control); 2: SVC (sensorless vector control)
Starting Torque Up to 120% (VT) or 150% (CT) for one minute
V/F Curve 4 point adjustable V/F curve and square curve
Speed Response Ability 5Hz
Torque Limit
VT: 170% torque current
CT: 180% torque current
Torque Accuracy ±5%
Max Output Frequency (Hz)
230V series: 600.00 Hz (75hp & above: 400.00 Hz)
460V series: 600.00 Hz (125hp & above: 400.00 Hz)
Output Frequency Accuracy
Digital command: ±0.01%, -10°C to +40°C
Analog command: ±0.1%, 25±10°C
Output Frequency
Resolution
Digital command: 0.01Hz
Analog command: (0.03) x (max output frequency) / 60Hz [±11 bit]
Overload Tolerance
VT duty: rated output current is 120% for 60 seconds
CT duty: rated output current is 150% for 60 seconds
Frequency Setting Signal +10V to -10V, 0 to 10V, 4~20mA, 0~20mA
Accel/Decel Time 0.00~600.00 / 0.0~6000.0 seconds
Main Control Function
Fault restart; Parameter copy; Dwell; BACnet communication;
Momentary power loss ride-through; Speed search; Over-torque
detection; Torque limit; 16-step speed (max); Accel/Decel time
switch; S-curve accel/decel; 3-wire sequence; Auto-Tuning (rotational,
stationary); Frequency upper/lower limit settings; Cooling fan on/
off switch; Slip compensation; Torque compensation; JOG frequency;
MODBUS communication (RS-485 RJ45, max 115.2 kbps); DC injection
braking at start/stop; Smart stall; PID control (with sleep function);
Energy saving control
Fan Control
230V model GS4-2020 and above: PMW control
230V model GS4-2015 and below: ON/OFF switch control
460V model GS4-4025 and above: PMW control
460V model GS4-4020 and below: ON/OFF switch control
Protection
Characteristics
Motor Protection Electronic thermal relay protection
Over-current Protection
For drive model 230V and 460V:
Over-current protection for 240% rated current
Current clamp: VT duty 170–175%; CT duty 180~185%
Over-voltage Protection
230V: drive will stop when DC-BUS voltage exceeds 410V
460V: drive will stop when DC-BUS voltage exceeds 820V
Over-temperature
Protection
Built-in temperature sensor
Stall Prevention
Stall prevention during acceleration, deceleration, and running
independently
Restart After Instantaneous
Power Failure
Parameter setting up to 20 seconds
Ground Leakage Current
Protection
Leakage current is higher than 50% of rated current of the AC motor drive
Agency Approvals
CE,
c
UL
us
, Reach, RoHS
(Agency approvals do not apply to accessory conduit box kits, fan kits,
flange mount kits, and braking resistors.)
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