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• Switch off the sensor test for the inputs used
(Sensor test Channel x active = FALSE)
• Set the parameter Logic of Channel x and y to
Two Channel SyncVelocity Control Channel x/y
• Set the parameters Velocity limit channel x and Velocity limit channel y of the used channels to the
required value. The entered value has the unit 1/10 Hz.
Fig. 26: Example of the signal curve of the input signal in the operating mode Two Channel Sync Velocity
Control
5.6.3.5
Configuration of the EP1908 for mode Two Channel Encoder 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 Encoder Velocity Control Channel x/y is used to determine a frequency from the
signals of an input pair of the EP1908-0002. The upper limit frequencies are specified separately, but should
but the same. The same frequencies have to be supplied, whereby all states are permitted that may occur at
the encoder interface.
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 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/encoders to the input pairs
◦ 1 and 2,
◦ 3 and 4,
◦ 5 and 6 or
◦ 7 and 8
• Switch off the sensor test for the inputs used
(Sensor test Channel x active = FALSE)
• Set the parameter Logic of Channel x and y to
Two Channel SyncVelocity Control Channel x/y
EP1908
).
DC
Version: 3.0.0
Operation
43
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