Emerson E300 Series Design Manual page 256

Advanced elevator drive / dedicated elevator variable speed ac drive for induction and permanent magnet motors
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Figure 8-16 Roping Ratio
Nominal Elevator Speed rpm (E07) is calculated automatically when Nominal Elevator Speed (E01), or Sheave Diameter (E02), or Roping (E03), or
Gearbox Ratio Numerator (E04), or Gear Ratio Denominator (E05) are modified.
See Nominal Elevator Speed rpm (E07) for more details.
E04
Gearbox Ratio Numerator
Mode
Open-Loop, RFC-A, RFC-S
Minimum
1
Open-Loop, RFC-A: 31
Default
RFC-S: 1
Type
16 Bit User Save
Display Format
Standard
Coding
RW
This sets the gearbox ratio numerator and is used to calculate Nominal Elevator Speed rpm (E07). A gear box ratio (In:Out) of 7:3 is entered as 7 in
Gearbox Ratio Numerator (E04).
Nominal Elevator Speed rpm (E07) is calculated automatically when Nominal Elevator Speed (E01), or Sheave Diameter (E02), or Roping (E03), or
Gearbox Ratio Numerator (E04), or Gear Ratio Denominator (E05) are modified.
The default gearbox ratio of 1:1 is used for gearless PM motor applications.
See Nominal Elevator Speed rpm (E07) for more details.
E05
Gear Ratio Denominator
Mode
Open-Loop, RFC-A, RFC-S
Minimum
1
Default
1
Type
16 Bit User Save
Display Format
Standard
Coding
RW
This sets the gearbox ratio numerator and is used to calculate Nominal Elevator Speed rpm (E07). A gear box ratio (In:Out) of 7:3 is entered as 3 in
Gear Ratio Denominator (E05).
Nominal Elevator Speed rpm (E07) is calculated automatically when Nominal Elevator Speed (E01), or Sheave Diameter (E02), or Roping (E03), or
Gearbox Ratio Numerator (E04), or Gear Ratio Denominator (E05) are modified.
The default gearbox ratio of 1:1 is used for gearless PM motor applications.
See Nominal Elevator Speed rpm (E07) for more details.
256
Electrical
Getting
User Menu A Commissioning
installation
started
Advanced
Diagnostics Optimization CT MODBUS RTU Technical Data
Parameters
Maximum
32767
Units
Update Rate
Background
Decimal Places
0
Maximum
32767
Units
Update Rate
Background
Decimal Places
0
E300 Design Guide
Issue Number: 1

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