Outputting A Signal When The Output Frequency Is Close To The Set Value - Hitachi WJ Series User Manual

Chapter 9
9.13.3

Outputting a Signal When the Output Frequency Is Close to the Set Value

 How to detect and tell the system that the output frequency to the motor is close to the set
Q
value?
 Assigning "Set frequency reached [FA3] (06)"/"Set frequency reached 2 [FA5] (25)" to one of the
A
output terminal functions ([C021]/[C022]/[C026]) enables the inverter to output command
frequency arrival signals.
 Two independent set frequency reached signals [FA3] and [FA5] can be assigned to the output
terminals.
 The frequency setting for turning [FA3] on during acceleration and off during deceleration is set
!
by "Arrival frequency during acceleration [C042]"/"Arrival frequency during deceleration
[C043]", respectively. Similarly, set "Arrival frequency 2 during acceleration [C045]"/"Arrival
frequency 2 during deceleration [C046]" for [FA5].
Code
Arrival frequency
[C042]
during acceleration
Arrival frequency
[C043]
during deceleration
Arrival frequency 2
[C045]
during acceleration
Arrival frequency 2
[C046]
during deceleration
[C021]
Output terminal
[C022]
function
[C026]
[C045]
[C042]
Output
frequency
[FA2] Output
[FA4] Output
Item
During acceleration, [FA3] turns on when the
output frequency reaches this set value.
During deceleration, [FA3] turns on when the
output frequency reaches this set value.
During acceleration, [FA5] turns on when the
output frequency reaches this set value.
During deceleration, [FA5] turns on when the
output frequency reaches this set value.
Set frequency reached [FA3]:
This signal turns on/off when the output
frequency reaches the [C042]/[C043] set
values.
Set frequency reached 2 [FA5]:
This signal turns on/off when the output
frequency reaches the [C045]/[C046] set
values.
fon
fon
ON
ON
Description
[C046]
foff
[C043]
foff
(Example of operation)
When the maximum frequency is 60 Hz,
and [C042] = [C043] = 50 Hz
9-13-3
Inverter Functions
0.00 to 590.00 (Hz)
0.00 to 590.00 (Hz)
0.00 to 590.00 (Hz)
0.00 to 590.00 (Hz)
fon: 1% of the maximum frequency
foff: 2% of the maximum frequency
- fon = 60 × 0.01 = 0.6 Hz
- foff = 60 × 0.02 = 1.2 Hz
- During acceleration:
On at 50 - 0.6 = 49.4 Hz
- During deceleration:
Off at 50 - 1.2 = 48.8 Hz
Data
06
25