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Advanced manual
26
Note!
Mind the proper addressing of the frequency converters, which is crucial for correct operation
of the unit.
Note!
The LS frequency converters can be restored to factory con
fi
guration by setting the parameter
H93 to 1 and consecutive switching Off and On again.
Name of the parameter
Code
Value
Remarks
Source of control
DRV
3
Modbus
Source of frequency reference
Frq
iC5:8 / iG5:7
Modbus
Stopping method
F4
0
ramp down
Max output frequency
F21
100,0
Hz
Motor rated frequency
F22
50,0
Hz
U/f curve characteristics
F30
1
square charact.
Motor overload protection
F50
1
enabled
Motor poles number
H31
*
see nameplate
Motor rated slip frequency
H32
**
to be calculated
Motor rated current
H33
*
see nameplate
No load motor current
H34
*
1/3 rated current
Modbus address
I60
*
2 – supply fan
3 – exhaust fan
Reaction on communication loss
I62
2
ramp stop
Communication timeout
I63
10,0
s
Formula to calculate the rated slip frequency:
H32 = (1 - H31 * rated_rpm / 6000) * 50 Hz
8. ALARM HANDLING
Alarm states are indicated by blinking display and
fl
ashing LED lamp on the HMI OPTIMA device, by
switching the relay output and by the LED lamp on the main controller PCB inside the control box.
In the HMI, alarms can be accessed via the Alarm Menu. The menu is available on long-pressing of
the button [C] (approx. 3s).
Note!
In the default factory mode, the HMI switches to the Alarm Menu automatically when the alarm
appears. The actual behavior depends on the HMI settings.
Each alarm is displayed in the following manner:
A9_HW_ThAir
09:05.16 22-10
where A9_HW_ThAir stands for the name of the alarm and the bottom line indicates the time and
date when the alarm was detected. Except of the displayed text, the alarm LED starts to blink when
new alarm is detected.
All the alarms can be divided in two groups:
▪
Self-release alarms – the unit is restarted automatically when the alarm signal disappears, marked
with A1, A2... codes
▪
Blocking alarms – manual acknowledge is required to restart the unit, marked with A50, A51... codes
To acknowledge the alarm hold the [OK] button. Earlier, the cause of the alarm should be eliminated.
Otherwise, the [*] symbol will appear next to the name of the alarm, to indicate that the cause of the
alarm is still valid, regardless to the alarm con
fi
rmation. In such case, the LED stops blinking and
switches to solid red light.
