Connecting The Power Supply - Siemens SIMATIC TP 270 Operating Instructions Manual

Connection configuration
The figure below illustrates how to connect an uninterruptible power supply UPS with serial
interface to the HMI device.
Operating unit
Figure 4-7
See also
UPS (Page 6-16)
Transferring options (Page 7-22)
4.3.8

Connecting the power supply

Connecting the plug-in terminal block
The power supply for the HMI device is connected at the 2-pin plug connector on the
underside of the unit. Use the 2-pin terminal block supplied for this purpose. The plug-in
terminal block is designed for cables with a cross-section not larger than 2.5 mm
The figure below illustrates the assignment of the plug-in terminal block.
Ensure that the lines are connected properly to the correct terminals. Also note the labeling
for the contact pins on the back of the HMI device.
The HMI device is equipped with reverse battery protection.
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
RS 232
IF2
24 V
Connection configuration for an uninterruptible power supply
GND
+ 24 V DC
Installation and connection
4.3 Connecting the HMI device
UPS
.
2
4-17