Siemens SIMATIC FM 453 Manual page 59

Digital Outputs The FM 453 provides four digital outputs per channel.
(Q0 to Q3)
All outputs have equal priority. Switching functions are allocated to an output
number by way of machine data.
These four outputs are intended for wiring of application-specific signals.
Possible uses include:
See Section 5.3.1 for further applications.
Table 4-13
Supply voltage
(auxiliary voltage 2L+ to 4L+)
Electrical isolation
Output voltage
Output current on signal "1"
Short-circuit/overload protection
Switching rate
Polarity-reversal protection for auxil-
iary voltages
Total current of digital outputs
Auxiliary Voltage A 24 V auxiliary voltage that has the parameters listed above must be con-
for Encoders 1L+ nected for digital outputs and encoders with 5 V or 24 V supply voltages.
and Digital Out-
puts 2L+ to 4L+
Danger
!
The 24 V auxiliary voltages 1L+ to 4L+ must be implemented as functional
extra-low voltages with safe isolation to EN60204-1, Section 6.4, PELV
(with grounding 1M, 2M).
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Position reached and stopped
Switching function M command
Forward/backward rotation
Electrical Parameters of Digital Outputs
at ambient temperature of 40 C
– Rated value
– Permissible value range
– Lamp load
at ambient temperature of 60 C
– Rated value
– Permissible value range
Wiring the FM 453
24 V DC
(allowable range: 20.4...28.8 V)
Yes
0 signal: Residual current max. 2 mA
1 signal: (aux. v. 2L+ to 4L+ - 0.3 V)
0.5 A
5 mA to 0.6 A (over auxiliary voltage range)
max. 5 W
0.1 A
5 mA to 0.12 A (over auxiliary voltage)
Yes, for overtemperature, switches for each
output separately
Resistive load: max. 100 Hz
Inductive load: max. 0.25 Hz (with exter-
nal quenching)
Yes
Simultaneity factor 100 %
up to 40 C: 6 A (for all channels)
40 C to 60 C: 1.2 A (for all channels)
4-27