7-23
Note 3.
There are parameters that make setting unit changes when the values are
increased with the Digital Operator. The smaller units are, however, used for
communications in such cases. For example, the value in n083 (register 0153
Hex: jump frequency 1) will be set in 0.01-Hz increments if the frequency is less
than 100 Hz and 0.1-Hz increments if the frequency is 100 Hz or over. The value
0.01 Hz is always 1 Hex for communications.
If the jump frequency is 100.0 Hz, the minimum unit of setting will be
0.01 Hz and the data will be converted as follows:
100.0 (Hz)/0.01 (Hz) = 10000 = 2710 Hex
D
Negative Values Expressed in 2’s Complements
If the frequency reference bias in n061 is --100%, the minimum unit of
setting will be 1% and the data will be converted as follows:
100 (%)/1 (%) = 100 = 0064 Hex
®
2’s complement: FF9C Hex
Bit reversed.
1 is added.
Note
Whether the data is positive or negative is determined by the parameter set
value.
The MSB of negative-value data is always set to 1. Data with its MSB set to 1 is
not, however, always negative-value data.
For example, the setting range of the n083 parameter (register 0153 Hex: jump
frequency 1) is within a range from 0.00 to 400.00 Hz. If the jump frequency is
400.0 Hz, the data is obtained from the following formula and its MSB will be 1.
400.0 (Hz)/0.001 (Hz) = 4000 = 9C40 Hex
D
Setting All Unused Bits to 0
·
Bits 11 through 15 of the RUN command (register 0001 Hex) are unused. When writing
the data, be sure to set all of these bits to 0.
These bits when read are set to 0.
D
No Data Settings in Unused Registers
·
Registers described “not used” may be used for internal processing. Do not write any
data to such registers.
Communications
Chapter 7
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...