Technical Specifications
A-5
FM 351 Positioning Module
C79000-G7076-C351-02
Digital outputs
Number of outputs 8
Electrical isolation yes, optocoupler
Status indication yes, green LED per digital output
Output current • 0 signal: 0.5 mA
• 1 signal: 0.5 A
(Permissible range: 5...600 mA)
• Lamp load: 5 W
Output delay for output current 0.5 A • 0 → 1 signal: max. 300 µs
• 1 → 0 signal: max. 300 µs
Signal level for 1 signal L+ –0.8V
Control of a digital input Yes
Control of a counter input no, due to 50 µs missing pulse
Short circuit protection yes, thermically clocked
threshold 1 A
Limit on induct. cut-off voltage Typ. L+: –48V
Switching frequency • Resistive load: Max. 100 Hz
• Inductive load: Max. 0.5 Hz
Total current of digital outputs with S7-300
horizontal installation
Simultaneity factor 75 %:
at 20° C and 60° C: 3 A
Total current of digital outputs with S7-300
vertical installation
Simultaneity factor 75 %:
at 40° C: 3 A
Unshielded cord length Max. 100 m
Shielded cord length max. 600 m
Insulation test VDE 0160
Note
When the 24 V power supply is turned on using a mechanical contact, the FM 351 applies a
pulse to the outputs. Within the permitted output current range, the pulse may be 50 µs. You
must take this into account when you use the FM 351 in conjunction with fast counters.
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