Eurotherm Drives 590 DRV Digital, Product Manual

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Appendix D I/O Configuration - System Menu
590 DRV Digital DC Drive Product Manual App. D - 9
D
Analog Outputs - Examples
The source of an analog output signal can be read from any parameter. It is important to remember that other param-
eters do not "send" signals to the output terminal. An output terminal "retrieves" the signal from the parameter
described by its SOURCE TAG parameter.
The % TO GET 10 VDC value is based on the range of the source. It can be set positive or negative which will set the
sign of the output. For parameters whose values are not in percent, the range is based on the unformated quantity
reformatted into percent. For example, tag number 300 would become 3.00%.
MODULUS will determine whether the output is bipolar or unipolar. When TRUE, the output is unipolar (will not go
negative). Negative values will be clamped to zero.
Reading FIELD I FBK. through analog output 1
1. Set CONFIGURE I/O::CONFIGURE ENABLE to ENABLE.
2. Find the tag number associated with field current feedback in the parameter list in Appendix I. (It is 300.)
3. Set ANALOG OUTPUTS::ANOUT 1 (A7):: SOURCE TAG to 300.
4. Set ANALOG OUTPUTS::ANOUT 1 (A7):: % TO GET 10 VDC to 100% (Default).
5. Reset CONFIGURE I/O::CONFIGURE ENABLE to DISABLE.
Connecting the serial link to analog output 1
This allows analog output 1 to read values written by an external device to PNO 58 (ASCII 3A) which is AUX
ANOUT 1.
1. Set CONFIGURE I/O::CONFIGURE ENABLE to ENABLE.
2. Find the tag number for AUX ANOUT 1 in the parameter list in Appendix I. (It is 128.)
3. Set ANALOG OUTPUTS::ANOUT 1 (A7):: SOURCE TAG to 128.
4. Set ANALOG OUTPUTS::ANOUT 1 (A7):: % TO GET 10V to 100% (Default).
5. Reset CONFIGURE I/O::CONFIGURE ENABLE to DISABLE.
Figure D.6 - Reading FIELD I FBK Using an Analog Output