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OP8110-3 Interface Group Communication Block

Owned by Sylvain Ménard
Last updated: Apr 28, 2023
4 min read


This block allows you to interface with the OP8110 amplifier groups. A group is defined as a collection of three amplifiers, e.g 1-2-3 or 4-5-6. This block can also be used to set the modes of each amplifier in a group and apply gain and offset calibration parameters (set at 1 and 0 respectively by default).  

Mask and Parameters


NameDescription
Parameters Tab
GROUP 1 MODE (AMP 1-2-3)

This parameter sets the mode for the amplifier group 1 (includes the first three amplifiers 1,2 and 3).

INDEPENDENT - With this mode selected, each amplifier output can be activated individually. i.e. the enable contactor can be individually controlled for each amplifier. It has an option to have a grouped operation mode by checking the grouped Operation checkbox. With this checkbox checked, all the three amplifiers are activated together i.e. the enable contactors of three amplifiers are controlled together. This mode is suitable for three-phase applications.

DIFFERENTIAL - With this mode selected, the first two amplifiers (Amp 1 and 2) are controlled together as a single amplifier. The reference provided to amplifier 1 is used and the one for amplifier 2 is ignored. The voltage produced at the output is created between amplifier 1 and amplifier 2. Amplifier 3 input reference is ignored as well. 

Application ModeEnsure that this parameter is always set to "Closed Loop".  (*Note that the "Open Loop" option is a debugging feature which an OPAL-RT engineer might use during the amplifier installation only).

AMPLIFIER X ENABLE MODE

This parameter allows you to select if the amplifier output activation (i.e, engaging the output contactor) is controlled by the corresponding port in the block or by the graphical user interface (GUI) OP8110-3 Console GUI block in the console.

GUI OUTPUT ENABLE - With this selected, the amplifier 'x' output is activated from the GUI in the console.

MODEL OUTPUT ENABLE - With this selected the amplifier 'x' output is activated from the Amp x Enable input port of the block.

Bypass Output Inductance

Check this box if you would like to bypass the 75 uH inductance at the output. 

Un-check if you need to keep the inductance in the circuit. The option is checked by default.

Calibration Tab
Amplifier X Gain Correction This value corresponds to the gain correction factor. This factor is multiplied to the Amp x Vref signal before sending it to the amplifier. The default value for the gain correction factor is 1. 
Amplifier X Offset Correction This value corresponds to the offset correction value. This factor is added to the Amp x Vref signal before sending it to the amplifier. The default value for the offset correction factor is 0. 


Inputs, Outputs, and Signals Available for Monitoring

Inputs

NameDescription
GUI_InThis input is used to communicate with the GUI in the console.
Amp x EnableThis input activates the amplifier X output when the AMPLIFIER X ENABLE MODE is selected to MODEL OUTPUT ENABLE. The input is active high.
Amp x Vref

This input is used to pass the voltage output reference to amplifier X. The value directly corresponds to the output voltage of the amplifier (with respect to the phase neutral). If the amplifier group operates in DIFFERENTIAL mode, this input corresponds to the output voltage between amplifier phase L1 and amplifier phase L2.

For details of maximum voltages possible in each mode, please consult OP8110 4Q Power Amplifier in Specialized Solutions Documentation.

SFP to OpInput

The user must connect an OpInput block with the tag SFP00 (or SFP01 for the second unit and so on). This port is used to establish communication with the amplifier. The process of mapping the amplifier bitstream I/O with the model I/O tags is provided in Simulator SFP Communication Setup.

Outputs

NameDescription
GUI_outThis output is used to communicate with the GUI in the console
Global Status

This port outputs the global status of the amplifier group.

Amp 1 Status

This pin outputs the status of amplifier 1.

Amp 1 Measure 

This pin provides the measurements from amplifier 1. It includes the measurements of the following values:

  1. Measured output voltage.  (*Note: It is the differential voltage between phase 1 and phase 2 when operating in DIFFERENTIAL mode. )
  2. Measured output current. 
  3. Measured voltage on the remote voltage connection
Amp 2 Status

This port outputs the status of amplifier 2.

Amp 2 Measure

This port provides the measurements from amplifier 2. It includes the measurements of the following values:

  1. Measured output voltage. 
  2. Measured output current. 
  3. Measured voltage on the remote voltage connection
Amp 3 Status

This port outputs the status of amplifier 3.

Amp 3 Measure

This port provides the measurements from amplifier 2. It includes the measurements of the following values:

  1. Measured output voltage. 
  2. Measured output current. 
  3. Measured voltage on the remote voltage connection
SFP to OpOutput

The user must connect an OpOutput block with the tag SFP00 (or SFP01 for the second unit and so on). This port is used to establish communication with the amplifier. The process of mapping the amplifier bitstream I/O with the model I/O tags is provided in Simulator SFP Communication Setup

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