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58 Technical data
Definitions
Example: ACS880-604-0640-3
I
max
I
rms
R
R
tot
P
brmax
P
br
P
cont.
Brake unit
P
brmax
+
-
R
I
max
R
tot
I
rms
I
max
P
cont.
E
R
Duty cycle (10 s / 60 s)
I
rms
R
P
br
Duty cycle (1 min / 5 min)
I
rms
P
br
Brake current wave form
I
max
I
rms
0
Maximum braking power per brake unit allowed
momentarily
Nominal resistance of the brake resistors connected to
one brake chopper unit
Total recommended brake resistor resistance of the listed
resistor assembly
Peak brake current (DC) per chopper
Continuous braking power per brake unit. The braking is
considered continuos if the braking time exceeds 10
minutes
Energy pulse that the resistor assembly will withstand
(400 s duty cycle). This energy will heat the resistor
°
element from 40
C to the maximum allowable
temperature.
Total rms DC current (per chopper) during a period of 10
seconds with braking power P
Short term braking power per brake unit allowed for 10
seconds every 60 seconds
P
br
0
10 s
Total rms DC current (per chopper) during a period of 1
minute with braking power P
Short term braking power per brake unit allowed for one
minute every 5 minutes
P
br
0
1 min
1 min or 10 s
br
50 s
br
4 min
4 min or 50 s
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