Siemens SENTRON ATC6500, Руководство пользователя

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Accessories
11.1 Expansion modules
3KC ATC6500 transfer control device
210
Manual, 05/2019, L1V30538268002A-01
11.1.1 Expansion module 4DI - 3KC9000-8TL60
Description
The expansion module 4DI (article number 3KC9000-8TL60) contains four opto-isolated
digital inputs.
In addition, a DC source (24 V / 1 W) is attached, in order to supply voltage to various types
of input.
These include:
● NPN, PNP, PUSH, PULL
● Active sensors with digital outputs
Connection drawings
Design of the terminals
Maximum current for supplying sensors
If the DC source of the expansion module is used for supplying sensors, the maximum
current for supplying sensors can be calculated as follows:
Isens = 42 mA - n * 7 mA
Isens: Sensor current
42 mA = Maximum current of the DC source
n = Number of inputs used (including sensors)
7 mA = Consumption of one input
Example:
Use of 2 inputs with SSRs and one sensor
Isens = 42 mA - 3 * 7 mA = 21 mA