Beckhoff EP1908 Operating Instructions Manual page 42

Operation
Frequencies read out via CoE-Online
5.6.3.4 Configuration of the EP1908 for mode Two Channel Sync Velocity
Control
The TwinSAFE EtherCAT Box also supports direct connection of initiators and encoders for speed
measurement or frequency (24 V
The set mode Two Channel SyncVelocity Control Channel x/y determines a frequency from the signals of an
input pair of the EP1908-0002, whereby one input signal always has to be set to logical 1. The frequencies of
the two input signals must be the same.
If the current frequency is below the limit frequency set for both channels (Velocity limit channel x/y), the
corresponding input pair returns a logical 1. If the frequency is above the set limit frequency, the
corresponding input pair returns a logical 0. The limit frequencies must be the same.
The minimum supported frequency is 2 Hz. Values below this are shown as 0. The maximum supported
frequency is 500 Hz. Values above this result in a diagnostic messages of the EP1908-0002. This message
can be reset through a rising edge of the safe output signal ErrAck of the EP1908-0002.
Parameter
• Connect the signals of the used sensors to the input pairs
◦ 1 and 2,
◦ 3 and 4,
◦ 5 and 6 or
◦ 7 and 8
42
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DC
Version: 3.0.0 EP1908