NORD Drivesystems BU0750 - Manual (Page 139)

9 Technical data
BU 0750 GB-3311 Subject to technical amendments 139
9 Technical data
9.1 General Data
Function Specification
Output frequency 0.0 ... 400.0Hz
Pulse frequency 3.0 ... 16.0kHz (Standard = 6kHz)
Typical overload capacity 150% for 60s, peak value 200% for 3.5s
Protective measures against Overtemperature of the frequency
inverter
Over and under-voltage
Short-circuit, earth fault
Overload, idle running
Regulation and control Sensorless current vector control (ISD)
Field-orientated control Linear V/f characteristic curve
Setpoint input analog / PID input
(optional) 0 ... 10V,

10V, 0/4 ... 20mA
Analog setpoint resolution 10 bit based on measurement range
Analog output 0 ... 10V scaleable (optional)
Setpoint consistency analog < 1% digital < 0.02% (optional)
Motor temperature monitoring I
2
t-motor (UL/CUL certified), PTC / Bimetal switch (optional, not UL/CUL)
Ramp times 0 ... 320s
Control outputs (optional) 1 or 2 relays 28V DC / 230V AC, 2A
Interface (optional) According to option:
RS 485 (standard) CANbus
CANopen
DeviceNet Profibus DP
InterBus
AS interface
Efficiency of frequency inverter approx. 95%
Ambient temperature 0°C ... +50°C (S1 mode), 0°C ... +60°C (S3 mode) without condensation
Storage and transport temperature -25°C ... +60/70°C
Long-term storage See Section 10.6.1
Protection class IP54 air cooled version / IP65 water cooled version
Electrical isolation Control terminals (digital and analog inputs)
Max. installation altitude above sea level Up to 1000m: No power reduction
1000...4000m: 1%/ 100m power reduction (up to 2000m overvoltage
cat. 3)
2000...4000m: Only overvoltage category 2 is complied with, external
overvoltage protection at the mains input is necessary
Waiting time between two mains switching
cycles
60 sec for all devices in normal operating cycle
Ambient conditions Transport (IEC 60721-3-2): Vibration: 2M2
Operation (IEC 60721-3-3): Vibration: 3M7;
Climate: 3K3
Certifications CE, UL, cUL