Switching Frequency And Temperature; Protection Of The Drive Converter; Table 18: Switching Frequency And Temperature; Table 19: Protection Of The Drive Converter - KEB COMBIVERT S6 Instructions For Use Manual

UNIT DATA

3.3.5 Switching frequency and temperature

Unit size
Rated switching frequency
Max. switching frequency
Max. heat sink temperature
Temperature for derating the switching frequency
temperature for uprating the switching frequency
Temperature for switching to rated switching frequency
Table 18: Switching frequency and temperature
The output frequency is to be limited in such a way that it does not exceed 1/10 of the switching
1)
frequency.
On reaching the temperature T
2)
is increased again on cooling down to temperature Tur.
If derating is not requested in individual cases, the function can be deactivated via software.
The drive converter cooling is designed by way that the heat sink overtemperature
threshold is not exceeded at rated conditions. A switching frequency higher than the rat-
ed switching frequency also produces higher losses and thus a higher heat sink heating.
If the heat sink temperature reaches a critical threshold (T
can be reduced automatically step by step, in order to prevent that the drive converter
switches off due to overheating of the heat sink. If the heat sink temperature falls be-
low T
the switching frequency is immediately reduced to rated switching frequency. „Derating"
must be activated, for this function to work.

3.3.6 Protection of the drive converter

Unit size U = 400V
N
gG (Iec)
Sccr 30 kA
12
13
14
Unit size U = 230V
N
gG (Iec)
Sccr 30 kA
12
13
14
Table 19: Protection of the drive converter
36
the switching frequency is step down. The switching frequency
dr
, the switching frequency is increased to the setpoint again. At temperature T
ur
fuse in A
U = 480V
N
class „cc" (UL)
Sccr 30 kA
16 15
20 20
25 25
fuse in A
U = 200-230V
N
class „cc" (UL)
Sccr 30 kA
16 15
20 20
25 25
Short-circuit-capacity
After requests from EN 60439-1
the connection to mains: The units are suitable for use in a circuit capable
of delivering not more than 30 kA eff. unaffected symmetrical short-circuit
current.
12
f / kHz 8
1)
SN
f / kHz 16
1)
S_max
T / °C 90
HS
T / °C 80
2)
dr
T / °C 70
2)
ur
/ °C 85
2)
T
em
) the switching frequency
dr
Alternatively Motor
protection switch
U = 480V
N
class „J" (UL) PKZM0 32-e (UL)
Sccr 5 kA
15
480Y/277V, 20 HP
20
25
Alternatively Motor
protection switch
U = 200-230V
N
class „J" (UL) PKZM0 32-e (UL)
Sccr 5 kA
15
20
25
and EN 61800-5-1 the following is valid for
13 14
8 4
16 16
80
70
50
75
em
eaton
Sccr 5 kA
—
eaton
Sccr 5 kA
200V, 7.5 HP
230V, 10 HP
—