Siemens S7-400PLC Especificações Página 127

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Digital modules
4.10 Digital input module SM 421; DI 16 x UC 24/60 V (6ES7421-7DH00-0AB0)
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
127
Sensor selection data
Input voltage
Nominal value
24 to 60 VUC
For "1" signal
15 to 72 VDC
-15 to -72 VDC
15 to 60 VAC
For "0" signal
-6 to +6 VDC
0 to 5 VAC
Frequency band 47 DC/AC to 63 Hz
Input current
With "1" signal
Typ. 4 mA to 10 mA
Input characteristics Similar to IEC 61131-2
1)
Connection of 2-wire BEROs
Permissible quiescent current
Supported
Max. 0.5 mA to 2 mA
2)
Time, Frequency
Internal preparation time for
Only hardware interrupt enable
Max. 450 µs
Enable hardware and diagnostics interrupt
Max. 2 ms
Input delay
Programmable
Yes
Nominal value
0.5 / 3 / 10 / 20 ms
Values go into cycle and response times.
Sensor Circuit
Resistance circuit of the sensor for wire break monitoring
Nominal voltage 24 V (15 to 35 V)
18 kΩ
Nominal voltage 48 V (30 to 60 V)
39 kΩ
Nominal voltage 60 V (50 to 72 V)
56 kΩ
1
IEC 61131-2 does not specify any data for UC modules. The values have been adapted as much as
possible to IEC 61131-2.
2
Minimum closed-circuit current is required for wire break monitoring.
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