4.4 Setting Multi-step Frequency
Multi-step operations can be carried out by assigning different speeds (or frequencies) to the Px
terminals. Step 0 uses the frequency reference source set with the Frq code in the Operation group.
Px terminal parameter values 7 (Speed-L), 8 (Speed-M) and 9 (Speed-H) are recognized as binary
commands and work in combination with Fx or Rx run commands. The inverter operates
according to the frequencies set with St.1–3 (multi-step frequency 1–3) , bA.53–56 (multi-step
frequency 4–7) and the binary command combinations.
St1–St3
Multi-step frequency
1–3
-
0–
Maximum
Hz
Multi-step frequency
4–7
-
0–
Maximum
Hz
In
65–71
Px terminal
configuration
Px Define (Px:
P1–P7)
0–54
89
Multi-step command
delay time
InCheck Time 1 1–5000 ms
Multi-step Frequency Setting Details
St 1–St3
Configure multi-step frequency1–3.
If an LCD keypad is in use, bA.50–52 is used instead of St1–St3 (multi-step
frequency 1–3).
bA.53–56
Step Freq - 4–7
Configure multi-step frequency 4–7.
In.65–71 Px Define
Choose the terminals to setup as multi-step inputs, and then set the relevant
codes (In.65–71) to 7(Speed-L), 8(Speed-M), or 9(Speed-H).
Provided that terminals P3, P4 and P5 have been set to Speed-L, Speed-M and
Speed-H respectively, the following multi-step operation will be available.