Braking Section Tables; Abbreviations And Notes - ABB ACS 600 MultiDrive Safety And Product Information

ACS 600 MultiDrive – Technical Data

Braking Section Tables

Abbreviations and
Notes
Example: ACA 622-0640-3
I
I
max
max
I
I
rms rms
R
R
P
br.max
P
br.
P
cont.
A-16
The following tables specify the ratings for the braking sections.
The abbreviations and notes concerning the braking section tables are
listed below.
Braking Section
P
br.max
R
+
-
I
max
P
cont.
Duty Cycle (10 s / 60 s)
I
rms
P
br.
Duty Cycle (1 min / 5 min)
I
rms
P
br.
Braking current wave form
Heat loss of the braking chopper is one percent of braking power.
The degree of protection for the SAFUR and NBRA-6xx is IP 00. The
SAFUR resistors consist of several resistor elements. The resistance
of one element is 8 ohm.The resistors are built in an metal frame.
The degree protection for the braking section cabinets is IP 21/22/42.
Maximum braking power per section allowed momentarily
ACA 621 types: the minimum allowed resistance value for the
braking resistor (recommended resistance) per chopper
ACA 622 types: Resistance value for the used resistor per
braking chopper (resistance of one (2 x SAFURxxxxxxx) )
Peak braking current (d.c.) per chopper
Continuous braking power per section
Total rms d.c. current (per chopper) during a period of 10 seconds
with braking power P
br.
Short term braking power per section allowed for 10 seconds every
60 seconds
P
br.
0
10 s
50 s
Total rms d.c. current (per chopper) during a period of 1 minute
with braking power P
br.
Short term braking power per section allowed for one minute every 5
minutes.
P
br.
0
1 min 4 min
I
max
I
rms
0
1 min or 10 s
4 min or 50 s
ACS 600 MultiDrive