Danfoss iC7 Motion Series Application Manual page 110

Application Guide | iC7 Series Motion
Table 33: Selection Descriptions
Selection Name
Low Voltage Range
Medium Voltage Range
High Voltage Range
P 2.2.1.2 Overload Mode
When configuring a drive, it is important to know the load characteristic and load cycle of the application, so that it is possible to get the
most out of the drive. The available output current depends on the application load profile. In addition, derating of the output current
may be needed, for example, if operational temperature is increased, or the drive is installed in an altitude above 1000 m (3300 ft).
iC7-Automation drives support 4 different overload modes:
Low overload (LO): 110% load for a minimum of 1 minute every 10 minutes.
l
High overload (HO1): Up to 160% load for 1 minute every 10 minutes, with a breakaway torque of up to 200%.
l
High overload with increased duty (HO2): In drive parameters, this mode is called High overload (HO2). Up to 160% load for 1 minute
l
every 5 minutes and with a breakaway torque of up to 200% in the start of the process.
Automatic: In this mode, the drive automatically switches between LO and HO1 depending on the load conditions.
l
170
160
150
140
130
120
110
100
90
-1 0 1 2 3 4 5 6 7 8 9 10 11 12
LO
Figure 71: Overload Modes
Table 34: Selection Descriptions
Selection Name
Automatic Mode
Low Overload Mode (LO)
108
| © 2023.11
Selection Description
Unit nominal voltage and current are configured according to the lowest voltage of the power
unit's voltage range. For example:
In 380–500 V (3N05) rated units, the range is 380–440 V AC.
Unit nominal voltage and current are configured according to the medium voltage level of the
power unit's voltage range. For example:
In 380–500 V (3N05) rated units, the range is 441–480 V AC.
Unit nominal voltage and current are configured according to the highest voltage level of the
power unit's voltage range. For example:
In 380–500 V (3N05) rated units, the range is 481–500 V AC.
170
160
150
140
130
120
110
100
90
-1 0 1 2 3 4 5 6 7 8 9 10 11 12
HO1
Selection Description
Automatically switches between the modes Low Overload (LO) and High Overload (HO1).
For applications running at a non-varying or slowly varying load, where a limited overload capabil-
ity is required. This mode is typically used in applications with a variable torque load. The low over-
load profile allows the drive to run at 110% load for a minimum of 1 minute every 10 minutes. Typi-
cal applications where the low overload profile is used are:
• Fans
• Centrifugal pumps
• Blowers and aerators
• Screw compressors
170
160
150
140
130
120
110
100
90
-1 0 1 2 3 4 5 6 7 8 9 10 11 12
HO2
AB318753549016en-000301 / 136R0284