Siemens S5-135U/155U appendix Terminals, Safety tests

Digital Input/Output Modules

Terminals

Rated DC voltage of module

Reference potential for DC voltage

Rated AC voltage of module

Reference potential for AC voltage

Permissible line length for digital output modules

Enable inputs

L+

L±

L

N

Allow for the line resistance and tolerance of the supply voltage for the relevant output current.

F+

F±

(Enable voltage according to the rated voltage of the mod- ule)

Short-circuit signaling output (only when the short- circuited output is at logic 1)

Max. permissible supply voltage

for rated voltage 24 V DC (L+/L-) 1) for rated voltage 60 V DC (L+/L-) 1) for rated voltage 115 V/230 V AC (L/N)

Supply voltage ripple Vpp referred to rated DC vol- tage

Interference suppression at digital inputs

Interference pulse length at digital outputs

Circuitry for inductive loads:

H+

(Supply for 1L+, referred to L- of the module)

36 V DC for 100 ms

90 V DC for 100 ms

276 V AC for 100 ms

15 % max. 2)

v1.5 ms 3)

v1.5 ms 3) 4)

Protective devices to limit the breaking voltage are provided on the digital output modules. Additional protective cir- cuitry for the load is only required in exceptional cases. Exception: 458 digital output module

Switching of capacitive loads:

50 nF max. at full load

Safety tests

Surge voltage test to IEC 255-4

DC: Input/output to L-: Vp = 1 kV, 1.2/50 ms

AC: Input/output to L-: Vp = 2.5 kV, 1.2/50 ms

RFI test to IEC 255-4	DC: Input/output to L-: Vp = 1 kV, 1 MHz
	AC: Input/output to L-: Vp = 2.5 kV, 1 MHz
Safety test for the -4UA13/-4UA14 modules

Immunity from conducted interference on signal line

Immunity from discharge of static electricity

1 kV to IEC 801-4 (burst) for -4UA13 module 2 kV to IEC 801-4 (burst) for -4UA14 module

8 kV discharge in air to IEC 801-2, equivalent to 4 kV con- tact discharge (see Chap. 3 and page 4-16)

6 kV contact discharge for -4UA14 module

1)Supply and signal voltages must be produced as functional voltage with safety separation.

2)The supply voltage range values are limit values. They include ripple.

3)If not otherwise specified

4)Must be bridged by the signal receiver

System Manual	8-29
C79000-G8576-C199-06