Delta VFD-B Series User Manual

Chapter 2 Installation and Wiring_VFD-B Series
Revision 10/2005, BE13, SW V4.08 2-33
75-100 HP (55-75kW) 460V
VFD550B43A, VFD750B43A
T/L3S/L2R/L1
POWER
+1
V/T2U/T1
+2
200kgf-cm
(17 3in-lbf)
Screw Torque:
IM
3
W/T3
MOTOR
Control Terminal
Torque: 4Kgf-cm (3 in-lbf)
Wire: 12-24 AWG (3.3-0.2 mm
2
)
Power Terminal
Torque: 200 kgf-cm (173 in-lbf)
Wire: VFD550B43A : 2/0 AWG (67.4 mm
2
)
VFD750B43A: 3/0 AWG (85 mm
2
)
Wire Type: Stranded copper only, 75qC

Delta VFD-B Series Specifications

General

Series	VFD-B
Cooling Method	Fan cooling
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Control Mode	V/F control, Sensorless Vector Control
Communication	RS-485
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overload, Overtemperature, Short Circuit
Operating Temperature	-10°C to +50°C
Storage Temperature	-20°C to +60°C
Humidity	90% RH (non-condensing)
Altitude	1000m (Derating required above 1000m)