PROGRAMMING GUIDE
SINUS PENTA
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38.1.2. WHEN USING ES836 OR ES913 OPTIONAL BOARD
• Reading 1 or 2 Incremental Encoders:
To read one Encoder, use ES836 optional board or digital inputs MDI6 and MDI7 (if a push–pull encoder is used).
Both the optional board and digital inputs MDI6 and MDI7 can be used to read two encoders at a time. Use parameter
C189 to set the readout of the speed measure of the controlled motor or to read reference values.
You can use encoder A or encoder B as a speed feedback or a reference source (speed reference, torque reference or
PID reference).
Example:
If you want to use encoder A as a speed reference source and encoder B as a speed feedback, set C189 as 6:[A Ref ;
B Fbk]; use P073 and P074 (INPUTS FOR REFERENCES MENU) to define the min. speed and the max. speed read for
scaling and saturation of encoder A selected as a reference source (in one of parameters C144 ÷ C147, CONTROL
METHOD MENU); set parameter C012 (motor 1) to [Yes] to enable the Speed Feedback from Encoder function.
If encoder A is selected, no function can be programmed for MDI6 and MDI7; otherwise, alarm A082 Illegal Encoder
Configuration will trip when the ENABLE function is activated.
If encoder B is selected and ES836 or ES913 optional board is not detected by the drive, alarm A082 Illegal Encoder
Configuration will trip when the ENABLE function is activated.
• Reading a Frequency Input:
Only MDI6 digital input (FINA) can be used as a frequency input; if MDI8 is programmed as a frequency input (FINB)
with C189, if the optional board is installed, alarm A101 MDI8 Illegal Configuration trips.
No additional function must be assigned to MDI6; otherwise, alarm A100 MDI6 Illegal Configuration will trip when the
ENABLE function is activated.
• Reading a Frequency Input and an Incremental Encoder:
MDI6 Digital input (FINA) is used as a frequency input and Encoder B is used (because ES836 or ES913 board avoids
reading frequency input FINB through MDI8).
If additional functions are programmed for digital input MDI6, alarm A100 MDI6 Illegal Configuration will trip when
ENABLE closes.
If alarm A082 Illegal Encoder Configuration trips, this means that the drive has not detected ES836 or ES913 board
(check the board wiring).
Parameter C189 defines whether quick acquisition digital inputs are used to read a frequency input or an encoder, and if
the encoder is a reference source or a feedback source.
In the Encoder Menu, you can also do the following:
• define the number of pls/rev for the encoder being used;
• enable or disable the speed alarm;
• define a time constant applied to read filtering;
• define whether encoders are read by means of quadrature channels or by channel A only (while the direction of
rotation will be defined by channel B: ChB low level → negative rotation; ChB high level → positive rotation).
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