User´s Guide Power Rail Booster
Version 12/2005
Copyright
©
Siemens AG 2005 All rights reserved.
6ES7 972-4AA02-0XA0
Page 37 of 49
8 Technical
Specifications
Power Rail Booster
Voltage and current supply
Operating voltage
20,4 V to 28,8V DC, typ. 24 V, SELV, galv. isolated
Power consumption (rated current)
Max. 1,2 A
Current at make
Max. 15 A approx. 200 µs
Fusing for supply voltage
6 A Category C circuit-breaker
Power dissipation
Max. 20W
Signal transmission
Transmission speed
9,6; 19,2; 45,45; 93,75; 187,5; 500kbit/s
Setting of transmission speed
Automatic
Signal propagation time
≤
6 t
bit
Compatibility to
6ES7 972 4AA00 0XA0
Mixed configuration possible
6ES7 972 4AA00 0XA0 with fan
Mixed configuration possible, fan not necessary
6ES7 972 4AA01 0XA0
Mixed configuration possible
Safety
VDE / EN Specifications
EN61010
PROFIBUS interface
Input / Output signal
RS485 level
Input voltage insurance
-7V to +12V
Characteristic PIN 6 (Vcc)
5V ± 10%, 50mA
PIN assignments
See Documentation, Chapter
6.3.2.4
Galvanic isolation
Yes
POWER RAIL interface
Input / Output signal
Differential signal up to 40V
Input voltage endurance
Differential signal up to 60V, against ground 2,5kV
PIN assignment
See Documentation, Chapter
6.3.2.2
Shock-proof
Yes, to EN 61131-2
Galvanic isolation
Yes (not to internal logic)
Supply voltage interface
PIN assignment
See Documentation, Chapter
6.3.2.5
Galvanic isolation
Yes
Signalling contact interface
Maximum switching voltage
30 V DC; 230 V AC
Maximum switching current
0,20A
Maximum braking capacity
6 W (resistive load)
In the case of interconnection with inductive loads,
you must suppress interference using suitable
protective circuits (varistors or free wheeling
diodes)
PIN assignment
See Documentation, Chapter
6.3.2.6
Galvanic isolation
Yes
Electromagnetic compatibility (EMC)
Emitted interference
Limit value class B (EN55022)
Immunity to static discharges
Shield connection and housing components: ± 6 kV
Contact
discharge
(EN61000-4-2)
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