Siemens Simatic M7-400 - Page 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