Electronics Power Supply - Siemens SINAMICS SM150 Operating And Installation Instructions

Technical data and drawings
B.2 Terminal assignments
Note
Open input
An open input is interpreted as "low".
To enable the digital inputs to function, connect terminals MEXT1 and MEXT2. This is done
in one of the following ways:
● The incorporated ground reference of the digital inputs
● A jumper to terminal M
Note
Diagnosis when the 24 VDC auxiliary voltage fuse ruptures
The 24 VDC auxiliary voltage is protected internally by a 4 A fuse. A ruptured fuse is indicated
by loss of the auxiliary power and/or by a diagnostic message. All digital outputs are also
affected by a ruptured fuse. You will not be able to replace this fuse. Replace the component
and send it for repair.
B.2.4.9

Electronics power supply

Table B-22
Terminal
1
2
3
Max. connectable cross-section: 2.5 mm²
Type: Screw terminal
208
In this case, the isolation for these digital inputs is removed.
Power Stack Adapter 2: Electronics power supply
Designation
Electronics ground M
N.C.
Electronic power supply P24
Technical specifications
Voltage: 24 VDC (18 V to 31.2 V, -25% to +30%)
Power consumption (without DRIVE-CLiQ or digital out‐
puts): 1 A max.
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017