Siemens Simatic M7-400 Manual do Utilizador descarregar pdf (Página 148)

Digital Modules

4-26

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Status, Interrupts, Diagnostics

Status display Green LED per

channel

Interrupts

• Hardware interrupt

• Diagnostic Interrupt

Parameters can be

assigned

Parameters can be

assigned

Diagnostic functions

• Monitoring of the power

supply voltage of the

electronics

Yes

• Load voltage monitor Green LED per group

• Group error display

– For internal fault

– For external fault

Red LED (INTF)

Red LED (EXTF)

• Channel error display (F) None

• Diagnostic information can

be displayed

Yes

Monitoring for

• Wire break I < 1 mA

Substitute value can be applied Yes

Sensor Power Supply Outputs

Number of outputs 2

Output voltage

• with load Min. L+(–2.5 V)

Output current

• Rated value

• Permitted range

120 mA

0 to 150 mA

Additional (redundant) supply Possible

Short-circuit protection Yes, electronic

Data for Selecting a Sensor

Input voltage

• Rated value

• For signal “1”

• For signal “0”

24 VDC

11 V to 30 V

-30 V to 5 V

Input current

• At signal “1”

• At signal “0”

6 mA to 12 mA

< 6 mA

Input characteristic curve To IEC 61131;

type 2

Connection of two-wire BEROs

• Permitted bias current

Possible

Max. 3 mA

Time, Frequency

Internal preparation time for

• Only hardware interrupt

enable

– Input delay the same

for both channel

groups

Max. 70 s

– Input delay not the

same for both channel

groups

Max. 120 s

• Enable hardware and

diagnostic interrupts

Max. 5 ms

Input delay

• Parameters can be

assigned

Yes

• Rated value 0.1/0.5/3 ms

• Input frequency

(with a time delay of

0.1 ms)

< 2 kHz

Both values go into cycle and response times.

Sensor Circuit

Resistance circuit of the sensor

for wire break monitoring

10 to 18 kΩ

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