Typical Short Term Overload Limits; Rating Data - Control Techniques Commander SK2202 Getting Started Manual

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Information Information Installation
2.2

Typical short term overload limits

The maximum percentage overload limit changes depending on the induction motor only. Variations in motor rated current, motor rated power factor
and motor leakage inductance all result in changes in the maximum possible overload. The exact value for a specific motor can be calculated using
the equations detailed in Menu 4 in the Commander SK Advanced User Guide.
Table 2-1 Typical overload limits for size 2 to 5
Normal Duty overload with motor
rated current = drive rated current
Heavy Duty overload with motor
rated current = drive rated current
Heavy Duty overload with a typical
4 pole motor
Table 2-2 Typical overload limits for size 6
Normal Duty overload with motor
rated current = drive rated current
Heavy Duty overload with motor
rated current = drive rated current
Generally the drive rated current is higher than the matching motor rated current allowing a higher level of overload than the default setting as
illustrated by the example of a typical 4 pole motor.
The time allowed in the overload region is proportionally reduced at very low output frequency on some drive ratings.
NOTE
The maximum overload level which can be attained is independent of the speed.
2.3

Rating Data

Figure 2-1 Model code explanation
SK 2 4 01
Model number within frame size
Input voltage range:
2 = 200 to 240V
4 = 380 to 480V
5 = 500 to 575V
6 = 500 to 690V
Commander SK product range
Table 2-3 Commander SK2, 200V drive, 3 phase, 200 to 240VAC ±10%, 48 to 65Hz units
Normal Duty
Nominal 100% RMS
Model
motor output
number
power current
kW hp A
SK2201 4.0 5.0 15.5
SK2202 5.5 7.5 22
SK2203 7.5 10 28
10
Electrical Keypad and
Installation Display
From cold
110% for 215s
150% for 60s
175% for 40s
From cold From 100% full load
110% for 165s
129% for 97s
Frame size
Heavy Duty
Nominal 100% RMS
150% overload
motor output
current for 60s
power current
kW hp A
3.0 3.0 12.6
4.0 5.0 17
5.5 7.5 25
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Quick Start
Parameters
Commissioning
From 100% full load
110% for 5s
150% for 8s
175% for 5s
110% for 9s
129% for 15s
Typical Maximum
full load continuous
input input
current* current*
A A A
18.9 13.4 18.1
25.5 18.2 22.6
37.5 24.2 28.3
Diagnostics Options Parameter List
European USA Input fuse
input fuse rating
rating Class CC <30A
IEC gG Class J >30A
A A
20 20
25 25
32 30
Commander SK Size 2 to 6 Getting Started Guide
UL Listing
Information
Minimum
braking Instantaneous
resistor power rating
value
Ω
kW
18 8.9
Issue Number: 2