Siemens Add 7 AddFEM Manual page 59

Technical Data
Number of outputs
Nominal output voltage
Output voltage at 0 signal
Output voltage at 1 signal
Max. output current
Output current at 100% coincidence factor
Total output current
Effects of multiple overloads on multiple circuit
modules
Short–circuit to ground monitoring
Short–circuit strength
Max. lamp load per output
Inductive loads
Typical values:
Maximum inductivity at I v 500 mA Maximum inductivity at I v 500 mA
and f v 1 Hz
Maximum inductivity at I t 250 mA
and any f
Maximum inductivity at external suppressor
diode
Output delay time (TQD, dead time) from com-
mand output to response of the output (begin-
ning of the current rise)
Output response time (TQT) from command
output until the full output current is reached at
500 mA
Behavior of the outputs at interruption of the
operation controlled by the main processing
unit
Behavior of the outputs at collapsing and inter-
ruptions of the supply voltage L1+ resp. L2+ at
X7/1 resp. X7/11
Display
Configuration of the terminals
1)
Digital outputs can also be used as digital inputs!
4-8
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1)
Digital Outputs
16 digital semiconductor outputs
24 V DC
< 1 V
Supply voltage –2 V
500 mA
Parallel connection of outputs for higher cur-
rents is possible.
500 mA
8 A
None
Yes
Yes
5 W
Connection of inductive loads is possible. Inte-
grated suppressor diodes with a higher extinc-
tion voltage of 39 V than the normal free–
wheeling diode lead to rapid disconnection of
the current and thus of the actuating element.
However, the maximum extinction current (1
W) may not be exceeded.
8 H (without external suppressor diode) 8 H (without external suppressor diode)
Unlimited
Unlimited
20 µs for signal transitions from 0 to 1
20 µs for signal transitions from 1 to 0
50 µs for signal transitions from 0 to 1
50 µs for signal transitions from 1 to 0
The outputs are de–activated
The output voltage of the outputs follows the
supply voltage.
The voltage level of the digital outputs are de-
tected via additional module–internal digital
inputs, converted and read by the internal mi-
cro controller unit. The micro controller unit
displays these read–back states at the LED
on the front.
Refer to Appendix A, connector X7, Page A-2
AddFEM
AddFEM
C79000–G8076–C900–03