Program memory modules / Interface modules
Hardware - SIMADYN D 8-35
Edition 04.2011
8
8.8 Interface module SB71
6DD1681-0DH1
8 binary DC signals from the SIMADYN D / SIMATIC TDC /
S7-400 FM 458- components system are adapted to the signal level of
the plant/system via the SB71 interface module.
• Housing which can be snapped-on to mounting rails
• Ribbon cable connector (X1):
− 8 pins for binary inputs
− 2 pins for 1P, 1M
• Connector (X2), 2x 8 pin
− 8 terminals for binary outputs, 24/48 V DC
− 8 terminals for the NC, contacts
• 1 terminal pair X3: 1P and 1M (power supply on the
SIMADYN D)
• 1 terminal pair X4: 2P, 2M (power supply on the
plant/system side)
• Double test socket X5: 1P(+), 1M(G)
• LED displays for diagnostic purposes
• Optocoupler to provide electrical isolation between the input and
output
The SIMADYN D power supply is connected at terminal X3:
Terminal X3 Voltage on the SIMADYN side
1P
1M
+24 V
0 V
To connect the power supply use accessory SM11 power supply
connector for interface modules (Order No. 6DD1680-0BB0)
The maximum conductor cross section is 2,5 mm².
The SIMADYN D side power supply is displayed using a green LED (P).
The SIMADYN D side power supply (1P, 1M) is short-circuited (fault
condition).
Order No.
Description
Module design
Power supply on
the SIMADYN D
side
Green LED
Red LED
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