3-13
ENGLISH
3.3.6 Changing from keypad operation to external signal (terminal block) operation
By factory default, both the run commands (
/ / key) and frequency commands are sourced from
the keypad. This section provides other external command source samples--an external potentiometer
(variable resistor) as a frequency command source and external run switches as run forward/reverse
command sources.
Set up those external sources using the following procedure.
(1) Configure the function codes as listed below.
Function code Name Data Factory default
F01 Frequency command 1 1: Analog voltage input to terminal [12] 0
F02 Operation method 1: External digital input signal
0
(FRENIC-HVAC/AQUA)
2
(FRENIC-Ace)
E98 Terminal [FWD] function 98: Run forward command FWD 98
E99 Terminal [REV] function 99: Run reverse command REV 99
If terminals [FWD] and [REV] are ON, the F02 data cannot be changed. First turn those terminals
OFF and then change the F02 data.
(2) Wire the potentiometer to terminals across [13], [12], and [11].
(3) Connect the run forward switch between terminals [FWD] and [CM] and the run reverse switch between
[REV] and [CM].
(4) To start running the inverter, rotate the potentiometer to give a voltage to terminal [12] and then turn the run
forward or reverse switch ON (short-circuit).
For precautions in wiring, refer to the FRENIC-HVAC/AQUA or FRENIC-Ace User's Manual, Chapter 2.
3.3.7 Monitoring light alarms
The inverter identifies abnormal states in two categories--Heavy alarm and Light alarm. If the former occurs,
the inverter immediately trips; if the latter occurs, the inverter displays an alarm code (showing an alarm factor)
on the LCD monitor and flashes the WARN. LED but it continues to run without tripping.
Which alarm factors are categorized as light alarms ("Light alarm" object) should be defined with function
codes*
3
beforehand.
*3 Function codes H181, H182, H183 and H184 for the FRENIC-HVAC/AQUA series
Function code H81 and H82 for the FRENIC-Ace series
Assigning the signal LALM ("Light alarm") to any of the general-purpose output terminals with any of function
codes E20 to E24 and E27 (data = 98) enables the inverter to output the LALM signal on that terminal upon
occurrence of a light alarm.
For the light alarm objects, refer to the "Abnormal States Detectable ("Heavy Alarm" and "Light Alarm"
Objects) given in the FRENIC-HVAC/AQUA User's Manual (Chapter 9) and the FRENIC-Ace User's
Manual (Chapter 6).
How to reset a light alarm
If the light alarm factor has been removed, pressing the
key turns the WARN. LED and LALM signal OFF.
If not, pressing the
key changes the WARN. LED from flashing to ON and then the LED automatically
goes OFF the moment the light alarm factor is removed.
How to check a light alarm factor
If a light alarm occurs, an alarm code appears on the LCD monitor. To check the current light alarm factor,
enter Programming mode by pressing the
key and select "2. Light Alarm History" of "4. Alarm Info." It is
possible to check the factors of the last six light alarms (the last four light alarms for the FRENIC-Ace).
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