Siemens ET 790 Series Información técnica descargar pdf (Pagina 217)

Counters

Operating hours/pulse counters

16/3

Siemens ET G1 · 10/2008

■

Technical specifications

■

Selection and ordering data

Type Description

N 343 N 343 operating hours and switching operations counters

• Recording of operating hours and counting of switching opera-

tions for up to 36 sensor/actuator channels with 1- bit switching

objects

• Limit values for all count values

• Indication output over the bus if the current value exceeds or falls

below these limits, with option for monitoring the switching tele-

grams for all configured channels or cyclic interrogation of the

states

• To-the-second precision recording of operating hours of a chan-

nel through evaluation of the ON period

• Incrementation of the switching operations counter when switch-

ing from OFF to ON

• Option for querying all counting and limit values during runtime

and setting each to a new user-definable value

• Recording of operating hours with a maximum runtime of approx.

136 years

• Counts a maximum of 4.3 billion switching operations per channel

• Electronics powered over bus voltage

• Integrated bus coupling units

• Bus connection over contact system to data rail

• Modular installation devices for mounting on

TH35 EN 60715 mounting rail

• Width: 1 MW (1 MW = 18 mm)

Type Version DT Order No. Price

per PU

PU PS*/

P. un it

PG Weight

per PU

approx.

Unit(s) Unit(s) kg

5WG1 343-1AB01

N 343 N 343 operating hours and switching operations

counters

36 channels

5WG1 343-1AB01

1 1 030 0.092

* You can order this quantity or a multiple thereof.

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