SIEMENS
3/258
Siemens IK PI · 2015
PROFIBUS
Network transistions
PA routers
3
■
Technical specifications
DP/PA coupler
Bus connection
Connection for PROFIBUS PA
• DP/PA coupler Ex [i]
2 terminals of a 4-pole screw-type
terminal, integrated terminating
resistor
• DP/PA coupler FDC 157-0
4-pole screw-type terminal for
connection and looping through,
selectable terminating resistor
Connection for PROFIBUS DP
9-pin Sub-D plug,
contact assignment as described in
IEC 61158/EN 50170
Module-specific data
Degree of protection
IP20
Transmission rate on PROFIBUS DP
45.45 Kbps
Transmission rate on PROFIBUS PA
31.25 Kbps
Communication protocol
PROFIBUS DP
Voltages, currents, potentials
Supply voltage
24 V DC (20.4 V ... 28.8 V)
Reverse polarity protection
Yes
Overvoltage protection
Yes
Voltage at coupler output (PA)
• DP/PA coupler Ex [i]
13 V ... 14 V DC
• DP/PA coupler FDC 157-0
31 ± 1 V DC
Voltage monitoring
15.5 V
Overvoltage monitoring
U > 35 V; latching cutoff
Voltage failure bridging
Min. 5 ms
Current at coupler output (PA)
for supplying the PA field devices
• DP/PA coupler Ex [i]
Max. 110 mA
• DP/PA coupler FDC 157-0
Max. 1 A
Galvanic isolation 24 V DC
• PROFIBUS DP/PROFIBUS PA
Yes
• PROFIBUS DP/supply
Yes
• PROFIBUS PA/supply
Yes
• All electric circuits/functional
grounding
Yes
Power consumption of modules
(24 V DC)
• DP/PA coupler Ex [i]
Max. 400 mA
• DP/PA coupler FDC 157-0
Max. 2.3 A
Power loss of the module
• DP/PA coupler Ex [i]
Typ. 7 W
• DP/PA coupler FDC 157-0
Typ. 13.4 W
Status, interrupts, diagnostics
Diagnostics displays DP/PA coupler
Ex [i] and DP/PA coupler FDC 157-0
• PROFIBUS DP bus monitoring
Yellow LED "DP"
• PROFIBUS PA bus monitoring
Yellow LED "PA"
• 24 V DC power supply monitoring
Green "ON" LED
Additive diagnostics displays of the
DP/PA coupler FDC 157-0
• Group error
Red LED "SF"
• Bus error
Red LED "BF"
• Monitoring DP/PA coupler (active
coupler in redundant configuration)
Yellow LED "ACT"
Climatic conditions
Permissible operating temperature
DP/PA coupler Ex [i] and DP/
PA coupler FDC 157-0
• Horizontal installation
-25 ...
+60 °C
• Vertical installation
-25 ...
+40 °C
Dimensions and weight
Dimensions (W x H x D) in mm
80 x 125 x 130
Weight
• DP/PA coupler Ex [i]
Approx. 550 g
• DP/PA coupler FDC 157-0
Approx. 515 g
© Siemens AG 2014