Siemens Simatic S7-400 - Manual (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 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 Ω