July 02 Mounting and Electrical Installation TNC 370 D 3–17
3.7.7 Switching Inputs 24 Vdc for the PLC
Voltage ranges: Logic unit PL 410 B/PL 405 B
“1” signal: Ui 13 V to 30.2 V
“0” signal: Ui –20 V to 3.2 V
Current ranges:
“1” signal: Ii 3.8 mA to 8.9 mA 2.5 mA to 6 mA
“0” signal: Ii when Ui = 3.2 V 1.0 mA 0.65 mA
Address No. of inputs Device
I0 to I31 31 + control-is-ready signal Logic unit X42 (PLC input)
I128 to I152 25 Logic unit X46 (machine operating panel)
I64 to I127 64 First PLC input/output board PL 410 B
I92 to I255 64 Second PLC input/output board PL 410 B
I64 to I95 32 PL 405 B
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