Nord Drivesystems SK 750E-751-323-A - Technical Data; General Technical Data

9 Technical data
BU 0750 GB Technical design subject to change 139
9 Technical data
9.1 General technical data
Function
Specification
Output frequency
0.0 ... 400.0 Hz
Pulse frequency
3.0 ... 16.0kHz (default = 6kHz)
Typical overload capacity
150% for 60s, 200% for 3.5 s max.
Protection ensured against
inverter overtemperature
over- and undervoltage
short-circuit and ground fault
overload, no-load
Types of control
No-sensor vectorial current control (ISD)
Flux current control
Linear v/f characteristic
Analogue setpoint input/PID input
(optional)
0 ... 10V, 10V, 0/4 ... 20mA
Analogue setpoint resolution
10-bit related to measuring range
Analogue output
0 ... 10V scalable (optional)
Setpoint stability
analogue < 1% digital < 0.02% (optional)
Motor temperature monitoring
I
2
t motor (UL/cUL-approved), PTC / bimetallic thermal relay (optional, not
UL/cUL-approved)
Ramp times
0 ... 320 s
Control outputs (optional)
1 or 2 relays 28V DC / 230V AC, 2A
Interface (optional)
Option types:
RS 485 (standard)
CANbus
CANopen
DeviceNet
Profibus DP
InterBus
AS-Interface
Frequency inverter efficiency
approx. 95%
Ambient temperature
0°C ... +50°C (S1 duty ratio), 0°C ... +60°C (S3 duty ratio) no condensa-
tion
Storage and shipping temperature
-25°C ... +60/70°C
Long-term storage
When a frequency inverter has been in storage for one year, it should be
connected to the mains for 60 minutes. Do not exceed this interval and
repeat this action annually for the entire storage period.
Type of protection
IP54 air-cooled design / IP65 water-cooled design
Electrical isolation
Control terminals (digital and analogue inputs)
Max. installation altitude a.m.s.l.
Up to 1000m: output is not affected
1000...4000m: output reduced by 1% / 100m (overvoltage category 3
up to 2000m)
2000...4000m: FI meets overvoltage category 2 only, the line
input should be provided with an external over-
voltage protection device
Waiting time between two cycles of con-
necting the FI to the mains
60 sec for all equipment types, in the course of normal operating duty
The device conforms to climatic
category 3K3.
Humidity of the air: 1-25 g/m³
Temperature range: 5-40°C
Atmospheric pressure: 86-106 kPa
Licenses and approvals
CE, UL, cUL