NORD Drivesystems BU0240 - Manual (Page 37)

7 Technical data
BU 0240 GB 37
7 Technical Data Frequency Inverter
Function Specification
Output frequency 0.0 … 400.0Hz
Pulse frequency 3.0 … 16.0kHz, standard setting = 6kHz
Power reduction > 8kHz for 115/230V device, >6kHz for 400V device.
Typical overload capacity 150% for 60s, 200% for 3.5s
Protective measures against Over-heating of the frequency inverter,
overvoltage and undervoltage Short-circuit, earthing fault,
overload, idling
Regulation and control Sensorless current vector control (ISD), linear V/f characteristic curve,
automatic flux adaptation (energy-saving function)
Motor temperature monitoring I 2 t motor, PTC / Bimetal switch
Digital input 4x, Low 0-5V, High 14-30V, R
i
= 9.5k Ω, C
i
= 10nF, cycle time = 4ms
Electrical isolation Control terminals
Control outputs digital output:
Brake rectifier:
18-30V DC (according to VI 24V), max. 200mA, max. 100k Ω load
max. 0.5A choke voltage, voltage according to mains
Interfaces Standard: RS 485 (USS)
RS 232 (Single Slave)
System bus
Option: Profibus
CANopen
DeviceNet
AS Interface
Efficiency of frequency inverter approx. 95% according to size
Storage and transport temperature -25°C … +60/70°C
Operating / ambient temperature -25°C … +50°C, according to operating mode (Details: see BU0200)
ATEX: -20…+40°C (Details: Section 4.2)
Long-term storage Connect the FI and the 24V modules to the mains voltage for 60 minutes at
the latest after one year.
Connect the FI and all other modules to be supplied with 24V to the 24V
control voltage for 60 minutes at the latest after one year.
Maintain this cycle throughout the storage period.
Protection class IP55, optional IP66
Max. mounting 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 maintained, external
overvoltage protection at the mains input is necessary
Waiting period between two power-up
cycles
60 sec for all devices in normal operating cycle
Mains/motor/brake
resistance 4mm 2 flexible with wiring sleeves, 6mm 2 with rigid cable
Control unit /System bus 2.5mm 2 , with1.5mm 2 wiring sleeves
Terminal screw
tightening
torque
1.2...1.5Nm
Connection
terminals
RS485 / RS232 1x RJ12 (6-pin)
External 24V supply voltage 18…30V DC, at least 200...800mA according to load