Computation Of Master And Auxiliary Frequency - Emotron VSB Series Instruction Manual

Emotron VSB Instruction Manual
E xam ple:
When selecting AI as auxiliary frequency command source (set b0-03 to 3) and setting AI to
curve 1 (unit's place of C2-00 is 0), the frequency that corresponds to maximum input of curve
1 should be: (C2-02) × [master frequency × (b0-06)].
When X6/DI pulse input is selected as auxiliary frequency command source (set b0-03 to
6), the frequency that corresponds to maximum DI input should be: (C2-25) × [master
frequency × (b0-06)].
When PID is selected for auxiliary frequency command, the frequency that corresponds to
maximum value of PID output should be [master frequency × (b0-06)].
PID output diagram is as shown in Fig. 6-5.
Computation of master
b0-07
and auxiliary frequency
0: Master + auxiliary
The sum of master and auxiliary frequency is taken as frequency command. Output result is
subject to limitation of upper and lower limit frequency.
1: Master - auxiliary
The difference between master and auxiliary frequency is taken as frequency command.
Output result is subject to limitation of upper and lower limit frequency.
2: Max {master, auxiliary}
Master frequency or auxiliary frequency (whichever has a larger absolute value) is taken as
frequency command. Output result is subject to limitation of upper and lower limit frequency.
3: Min {master, auxiliary}
Master frequency or auxiliary frequency (whichever has a smaller absolute value) is taken as
frequency command. Output result is subject to limitation of upper and lower limit frequency.
Frequency output
Master command
value × (b0-06)
Fig. 6-5
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Chapter 6 Specification of Parameters
PID output
Maximum value
Range: 0 - 3 Factory default: 0