F And D Frequency Slaving Output - Emerson unidrive sp User Manual

Parameter Keypad and Parameter
structure display x.00
3.18

F and D frequency slaving output

Drive modes Open-loop
Bit SP
Coding
1
Default Open-loop
Update rate Background read
The frequency slaving output is in the form of F and D or quadrature A/B signals (Pr 3.18 = 0 gives quadrature, Pr 3.18 = 1 gives F and D). When F
and D is used the output frequency is either 1 or 2048 times the drive fundamental output frequency (selected by Pr 3.17). When quadrature A/B
signals are used, the slaving output frequency is effectively divided by 2 giving either 0.5 or 1024 times the drive fundamental output frequency. When
the drive output frequency changes direction there is always a period of 250μs where no pulses are produced. This ensures that with an F and D
output there is a set-up time of 250μs for the direction signal before an edge occurs on the frequency signal. The frequency slaving output operates
up to 1000Hz, above this frequency the outputs could be undefined.
For further Menu 3 Open-loop parameters, refer to Pr 3.27 on page 67.
Unidrive SP Advanced User Guide
Issue Number: 10
Parameter Advanced parameter
description format descriptions
FI DE Txt VM DP ND RA NC NV
0
www.controltechniques.com
Serial comms Electronic
Macros
protocol nameplate
PT US RW BU PS
1 1
Menu 3
Performance RFC mode
Open-loop
55