Siemens SINAMICS S120 Combi - X521 Fail-Safe Digital Inputs and Dynamically Adjustable Power Supply

Additional system components
9.1 Terminal Module TM54F
SINAMICS S120 Combi
194 Manual, 11/2017, 6SL3097-4AV00-0BP7
9.1.3.5
X521 fail-safe digital inputs and dynamically adjustable power supply
Table 9- 5 X521: Fail-safe digital inputs
Terminal
Designation
1)
Technical specifications
1 L1+ Switched voltage: +24 VDC
Maximum total load current: 500 mA
(voltage is switched for a test stop)
2
DI 0
F-DI 0 Voltage: -3 … +30 VDC
Electrical isolation: Yes
Reference potential: see terminals 6, 7, 8
Input characteristic acc. to IEC 61131-2, type 1
Input voltage (including ripple)
"1" signal: 15 … 30 V
"0" signal: -3 … +5 V
Input current
at 24 VDC: Typical 3.2 mA
for "1" signal: > 0.5 mA
Input delay:
2)
for "0" → "1": Typical 30 μs
for "1" → "0": Typical 60 μs
Switching frequency: Maximum 100 Hz
3
DI 1+
4
DI 2
F-DI 1
5 DI 3+
6
DI 1-
F-DI 0
Reference potential for DI 1+
7
DI 3-
F-DI 1
Reference potential for DI 3+
8
M1
Reference potential for DI 0, DI 2, L1+
An F-DI consists of a digital input and a 2nd digital input where, in addition, the cathode of the optocoupler is fed-out.
F-DI 0 = terminals 2, 3 and 6
F-DI 1 = terminals 4, 5 and 7
Type: Screw terminal 1 (Page 288)
1)
DI: Digital input, F-DI: Fail-safe digital input
2)
Pure hardware delay
Note
Execution of a test stop
The test stop of the F
-DI 0 to F-DI 4 can only be performed if the F-DI is supplied from L1+.
Note
Ensuring the function of digital inputs
For the digital inputs DIx+ to function, the reference potential must be connected to input
DIx
- in each case.
This is achieved by using one of the following measures:
1.
Providing the ground reference of the digital inputs
2.
A jumper between DIx- and terminal M1