Delta RMC151 - Manual (Page 958)

RMC70/150 and RMCTools User Manual
Because this parameter affects motion, the axis must be disabled or in Direct Output
before writing to this parameter. The Enabled and Direct Output Status Bits indicate these
states of the axis. When changing this parameter from RMCTools, the software will
automatically do this for you. This may cause a halt on the axis, which is expected.
Format Details
This section is primarily for addressing the Resolver Resolution parameter when
communicating with the RMC from an external device. This information is not necessary
when configuring the Resolver Resolution in RMCTools.
The Resolver Resolution is selected with bits 0 and 1 in the Resolver Configuration
register. These bits correspond to the Resolver Resolution as shown in the following table:
Bit 1 Bit 0 Value Resolution
0 0 0 14 bits
0 1 1 16 bits
See the Resolver Configuration Register for details about the register containing these
bits.
9.2.2.2.23.18. Reference Amplitude
Type: Axis Parameter Register
RMC70 Address: %MDn.15, where n = 12+ the axis number
RMC150 Address: %MDn.15, where n = 24+ the axis number
System Tag: _Axis[n].RefAmp, where n is the axis number
How to Find: Axes Parameters Pane, Setup tab: Primary Control Setup
Data Type: REAL
Units: V RMS
Range: 1.42 to 4.80
Default Value: 2V
Description
This parameter applies only to the Resolver (R) module. This parameter specifies the RMS
amplitude of the reference signal transmitted by the Resolver (R) module to the resolver
device.
Note: This parameter does not apply to the RW module.
Changing this Parameter
To change this parameter, click the cell, then click the Ellipsis button.
Your resolver specification sheet should indicate either a Transformation Ratio or the
Input and Output Voltages. Use the radio button to select the type of information you will
use to configure the interface and then enter the appropriate information in the
appropriate edit boxes.
Notice that the RMC expects a 2 Vrms signal from the resolver, and this may not match
up with your resolver’s specification. This is generally OK. RMCTools will use the
information you supplied to calculate the correct reference output voltage to obtain 2
Vrms back from the resolver. Some resolvers are specified for operation at 11 or 26 Volts.
These resolvers will generally still work well at 2 Volts, but there is some potential loss of
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