Inline Terminals Specifically for INTERBUS
Application Description
|
Inline
Electric Drives |
Bosch Rexroth AG
and Controls
Electrical isolation: Digital
terminal
The isolation of the I/O circuit of a digital terminal from the communications power
is only ensured if U
BK
and U
M
/U
S
are provided from separate power supply units.
Electrical isolation: Analog
terminal
The I/O circuit for the analog terminal is supplied from the analog circuit U
ANA
.
The 24 V supply (U
S
, U
M
) is only looped through the analog terminal and is
available again at the next terminal.
If the supply voltages U
BK
and U
M
/U
S
are supplied separately at the bus
coupler/power terminal, the I/O circuit of an analog terminal is electrically isolated
from the 24 V voltages U
M
and U
S
.
Fig. 4-4
Electrical isolation in the bus coupler and analog terminal
U
M
IB IL AI 2/SF
Local bus
IBS IL 24 BK-T/U
U
L+
U
ANA
U
L-
O P C
EEPROM
REF
24 V
+5 V
/ +10 V
MUX
µP
4
U
S
1
2
2
1
3
5 V
24 V
5 V
24 V
24 V
7..5 V
7.5 V
5 V
O P C
R-
R-
7427A013
7.5 V
