Siemens S7-300 - Page 168

Technical data
A.2 Technical data
FM 352 electronic cam controller
168 Operating Instructions, 05/2011, A5E01071724-03
Digital outputs
Number of outputs 13
Electrical isolation No
Status display Yes, one green LED per output
Output current
 0-signal: 0.5 mA
 1-signal: 0.5 A at 100% concurrence
(permitted range: 5 ... 600 mA)
 Lamp load: 5 W
Output delay when output current = 0.5 A
 0- → 1-signal: max. 300 µs
 1- → 0-signal: max. 300 µs
Signal level for 1-signal L+: -0.8 V
Control of a digital input Yes
Control of a count input no, due to 50 µs pulse error
Short-circuit protection Yes, thermal, clocked
Switching threshold 1.8 A
Limiting of inductive switch-off voltage typically L+ -48 V
Switching rate
 resistive load: max. 500 Hz
 inductive load: max. 0.5 Hz
Cumulative current of digital outputs with horizontal
installation of S7-300
Demand factor 100%:
 at 20 °C: 6 A
 at 60 °C: 3 A
Cumulative current of digital outputs with vertical installation
of S7-300
Demand factor 100%:
at 40 °C: 3 A
Unshielded cable length max. 100 m
Shielded cable length 600 m
Insulation test VDE 0160
Note
If the 24 V power supply is connected using a mechanical contact, the FM 352 transfers a
pulse to the outputs. The pulse may assume a length of 50 µs within the permissible output
current range. You must take this into account when using the FM 352 in combination with
high-speed counters.