Siemens SINAMICS S150 - Page 66

Electrical installation
4.8 Signal connections
Drive converter cabinet units
66 Operating Instructions, 07/07, A5E00288214A
X541: 4 non-isolated digital inputs/outputs
Table 4-16 Terminal strip X541
Terminal Designation
1)
Technical specifications
1 P24
2 DI/DO 8
3 DI/DO 9
4 DI/DO 10
5 DI/DO 11
6 M
As input:
Voltage: -3 V to 30 V
Current consumption (typical): 10 mA at 24 V DC
As output:
Max. load current per output: 20 mA
The aggregate currents of the four outputs are limited to 80 mA.
Continued short-circuit-proof
1)
DI/DO: Digital input/output: M: Electronic ground
Max. connectable cross-section: 1.5 mm
2
(AWG 14)
Note
An open input is interpreted as "low".
When externally-generated 24 V DC signals are connected, the ground must also be
connected.
CAUTION
Due to the limitation of the aggregate of the output currents an over-current can cause a
short circuit on an output terminal or even intrusion of the signal of a different terminal.
X542: 2 relay outputs (two-way contact)
Table 4-17 Terminal block X542
Terminal Designation
1)
Technical specifications
1 DO 0.NC
2 DO 0.COM
3 DO 0.NO
4 DO 1.NC
5 DO 1.COM
6 DO 1.NO
Max. load current: 8 A
Max. switching voltage:
250 V AC, 30 V DC
Max. switching voltage:
- at 250 V AC: 2000 VA
- at 30 V DC: 240 W (ohmic load)
Required minimum load: 20 mA
1)
NO: normally-open contact, NC: normally-closed contact, COM: mid-position contact
Max. connectable cross-section: 2.5 mm² (AWG 12)
Note
If 230 V AC is applied to the relay outputs, the Terminal Module must also be grounded via a
6 mm² protective conductor.