Technical Specifications
A-4
FM 351 Positioning Module
C79000-G7076-C351-02
Encoder inputs
Distance measurement • Incremental
• Absolute
Signal voltages • Symmetrical inputs: 5 V to RS 422
• Asymmetrical inputs: 24 V/ typ. 4 mA
Input frequency and cord length for asymmetrical
incremental encoder with 5 V supply
Max. 400 KHz for 32 m shielded cord length
Input frequency and cord length for asymmetrical
incremental encoder with 24 V supply
Max. 400 KHz for 100 m shielded cord length
Input frequency and cord length for asymmetrical
incremental encoder with 24 V supply
• Max. 50 KHz for 25 m shielded cable length
• Max. 25 KHz for 100 m shielded cord length
Data transfer rate and cord length for absolute
encoders
• Max. 188 KHz for 200 m shielded cord length
• Max. 375 KHz for 100 m shielded cord length
• Max. 750 KHz for 40 m shielded cord length
• Max. 1,5 MHz for 12 m shielded cord length
Monitoring possible for absolute encoders No
Input signals • Incremental: 2 pulse trains, 90° offset, 1 zero
pulse
• Absolute: Absolute value
Digital inputs
Number of digital inputs 8
Number of simultaneously controllable digital inputs 8
Electrical isolation yes, optocoupler
Status indication yes, green LED per digital input
Input voltage • 0 signal: -3 ... 5V
• 1 signal: 11 V to 30 V
Input current • 0 signal: ≤ 2 mA (closed-circuit current)
• 1 signal: 6 mA
Input delay (1I0, 1I1, 1I2 and 2I0, 2I1, 2I2) • 0 → 1 signal: Typ. 3 ms
• 1 → 0 signal: Typ. 3 ms
Input delay (1I3 and 2I3) • 0 → 1 signal: Typ. 300 µs
• 1 → 0 signal: Typ. 300 µs
Connection of a 2-wire BERO Possible
Cable length unshielded (1I0, 1I1, 1I2 and 2I0, 2I1,
2I2)
100 m
Cable length shielded (1I0, 1I1, 1I2 and 2I0, 2I1,
2I2)
max. 600 m
Cable length shielded (1I3 and 2I3) max. 100 m
Insulation test VDE 0160
Digital outputs
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