X521 Bidirectional Digital Inputs/Outputs - Siemens SINAMICS S120 Manual

6.5.2.4

X521 bidirectional digital inputs/outputs

Table 6-26 X521: Digital inputs/outputs
Terminal
1
2
3
4
5
6
7
8
Type: Screw terminal 1 (Page 321)
DI/DO: bidirectional digital input/output
1)
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
Designation
1)
DI/DO 0
DI/DO 1
DI/DO 2
DI/DO 3
+24 V
+24 V
+24 V
+24 V
Technical data
As input:
Voltage: -3 ... 30 V DC
Electrical isolation: no
Reference potential: M
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 V DC: typ. 9 mA
at <0.5 mA: Signal "0" reliably detected
Input delay
for "0" → "1": typ. 50 μs
for "1" → "0": typ. 100 µs
As output:
Voltage: 24 V DC
Electrical isolation: no
Reference potential: M
Output voltage
"1" signal, with load: > X524.+ -2 V
Output current
for each output: ≤ 0.5 A
Sum of all 4 outputs: ≤ 2 A
Residual current for "0" signal: < 0.5 mA
Short-circuit protection, automatic restart after a short-
circuit
Load types: ohmic, capacitive, inductive
Output delay
for "0" → "1": typ. 150 μs / max. 500 μs (ohmic load)
for "1" → "0": typ. 50 µs (ohmic load)
Switching frequency
for ohmic load: max. 100 Hz
for inductive load: max. 0.5 Hz
for lamp load: max. 10 Hz
Lamp load: max. 5 W
Voltage: 24 V DC
Max. total load current of +24 V auxiliary voltage of ter‐
minals 5 up to 8 combined: 500 mA
Terminal Modules
6.5 Terminal Module TM41
149