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Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 257
Issue Number: 1
This sets the nominal elevator motor speed in rpm units. This is used to set the motion profile scaling such that distances calculated for the profile in
mm will result in elevator car positioning in mm.
This value may be set manually when or it will be calculated automatically when Nominal Elevator Speed (E01), or Sheave Diameter (E02), or Roping
(E03), or Gearbox Ratio Numerator (E04), or Gear Ratio Denominator (E05).
Nominal Elevator Speed rpm (E07) is derived using the following calculation:
•A = Nominal Elevator Speed rpm (E07)
•B = Nominal Elevator Speed (E01)
•C = Sheave Diameter (E02)
•D = Roping (E03)
•E = Gearbox Ratio Numerator (E04)
•F = Gear Ratio Denominator (E05)
A = (B * D * E * 60) / (π * C * F)
Motor maximum frequency, Motor maximum speed (E08) must be set >= Nominal Elevator Speed rpm (E07).
This parameter also defines the maximum speed demand in rpm that the elevator drive will produce.
In Open loop mode the relationship between rpm and frequency is Nominal elevator frequency = Nominal elevator speed rpm x motor rated frequency
/ Motor synchronous speed.
If this value has been manually altered and the original calculated values must be restored, change Nominal Elevator Speed (E01) to Gearbox Ratio
Denominator (E05) to a different value and then back again to recalculate the original value of Nominal Elevator Speed rpm (E07).
Mo
tor maximu
m frequency / Motor maximum speed (E08) provides a limit on the maximum frequency or speed.
This value is calculated internally to be the equivalent of 110 % of Nominal Elevator Speed rpm (E07).
If Over Speed Threshold, Motor Over Speed Threshold (E09) is set to a non-zero value it defines the over speed threshold. If the Drive Encoder
Speed Feedback (J51) exceeds this threshold in either direction an Over Speed trip is produced. If Over Speed Threshold (E09) is set to 0.0 the
threshold is based on the variable minimum/maximum for the references and is equal to 1.2 x VM_SPEED_FREQ_REF[MAX].
E07 Nominal Elevator Speed rpm
Mode Open-Loop, RFC-A, RFC-S
Minimum 1.00 Maximum 4000.00
Default
Open-Loop, RFC-A: 1480.14
RFC-S: 39.48
Units rpm
Type 32 Bit User Save Update Rate Background
Display Format Standard Decimal Places 0
Coding RW
E08
Motor Maximum Frequency [Open-Loop]
Motor Maximum Speed [RFC-A, RFC-S]
Mode Open-Loop, RFC-A, RFC-S
Minimum -214748364.8 Maximum 214748364.7
Default
Open-Loop: 54.8
RFC-A: 1644.6
RFC-S: 43.8
Units
Open-Loop: Hz
RFC-A, RFC-S: rpm
Type 32 Bit User Save Update Rate Background
Display Format Standard Decimal Places 1
Coding RO, PR
E09 Over Speed Threshold
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 40000
Default
Open-Loop: 0
RFC-A, RFC-S: 0
Units
Open-Loop: Hz
RFC-A, RFC-S: rpm
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW, BU
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