Control Methods 

V/f Control (V/f), Open Loop Vector Control (OLV), Closed Loop Vector Control (CLV) 

Frequency Control Range 

0.01 to 120 Hz 

Frequency Accuracy 
(Temperature Fluctuation) 

Digital input: within ±0.01% of the max output frequency (-10°C to +40°C) 
Analog input: within ±0.5% of the max output frequency (-10°C ± 40°C) 

Frequency Setting Resolution 

Digital inputs: 0.01 Hz 
Analog inputs: 1/2048 of the maximum output frequency setting (11 bit plus sign) 

Output Frequency Resolution 

0.001 Hz 

Frequency Setting Methods 

−10 to +10 V, 0 to +10 V, 4 to 20 mA 

Starting Torque 

V/f: 130% at 3 Hz, OLV: 130% at 0.3 Hz, CLV: 130% at 0 r/min 

Speed Control Range 

V/f: 1:20, OLV: 1:100, CLV: 1:1000 

Speed Control Accuracy 

V/f: ± 2 to 3%, OLV: ± 0.5%, (25°C ± 10°C), CLV: ± 0.02% (25°C ±10°C) 

Speed Response 

OLV: 10 Hz, CLV: 50 Hz 

Accel/Decel Time 

0.0 to 6000.0 s (4 selectable combinations of independent acceleration and deceleration settings) 

Motor Protection 

Electronic thermal overload relay 

Momentary Overcurrent Protection 

Drive stops when output current exceeds 132% 

Overload Protection 

Drive stops after 60 s at 110% of rated output current 

Overvoltage Protection 

Power Cell VPN > 1035 VDC 

Undervoltage Protection 

Power Cell VPN < 300 VDC 

Momentary Power Loss Ride-Thru 

Resumes operation if power loss is less than 2 s (standard) (UPS Required) 

Overheat Protection 

Power Cell = Thermistor, Transformer = PT100 and Thermal Switch 

Ground Fault Protection 

Electronic circuit protection 

Ambient Temperature 

-45°C to +50°C (de-rating may apply above 40°C) 

Humidity 

95% RH or less (no condensation) 

Storage Temperature 

-20°C to +60°C (short-term temperature during transportation) 

Altitude 

Up to 2000 m without derating, up to 4000 m with output current and voltage derating