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Siemens Simatic S7-400 User Manual

Page 148

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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

m

s

Input delay not the
same for both channel
groups

Max. 120

m

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 k

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