A
A-6
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
Digital Inputs
Input current 0-signal: ≤ 2 mA (quiescent current)
1-signal: 6 mA
Input delay (1Q0, 1Q1, 1Q2 and 2Q0, 2Q1, 2Q2) 0 → 1-signal: typ. 3 ms
1 → 0-signal: typ. 3 ms
Input delay (1Q3 and 2Q3) 0 → 1-signal: typ. 300 µs
1 → 0-signal: typ. 300 µs
Connection of a 2-wire BERO Possible
Unshielded line length 100 m
Insulation test VDE 0160
Digital Outputs
Number of outputs 8
Electrical isolation Yes, optocoupler
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+: –0.8 V
Control of a digital input Yes
Control of a counter input No, due to 50 s error pulse
1
Short circuit protection Yes, thermally switching
Switching threshold 1 A
Limit on induct. cut-off voltage Typ. L+ -48 V
Switching frequency Resistive load: Max. 100 Hz
Inductive load: Max. 0.5 Hz
Summation current of digital outputs for horizontal
installation of S7-300
Simultaneity factor 75%:
at 20°C and 60°C: 3 A
Summation current of digital outputs for vertical installa-
tion of S7-300
Simultaneity factor 75%:
at 40°C: 3 A
Unshielded line length Max. 100 m
Insulation test VDE 0160
1
When the 24 V power supply is switched on using a mechanical contact, the FM 351 gives a pulse on the outputs! Within the permis-
sible output current range the pulse can be 50 s long. You must take this into account when you use the FM 351 in conjunction
with fast counters.
Technical Specifications
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