Changing From Keypad Operation To External Signal (Terminal Block) Operation; Monitoring Light Alarms - Fuji Electric FRENIC-HVAC User Manual

5.5.5 Changing from keypad operation to external signal (terminal
block) operation
By factory default, both the run commands (
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
F01 Frequency command 1
F02 Operation method
E98 Terminal [FWD] function
E99 Terminal [REV] function
If terminal [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 Chapter 2 "SPECIFICATIONS."
5.5.6

Monitoring light alarms

The FRENIC-HVAC 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 shows the L-AL on
the LCD monitor and flashes the WARN. LED but it continues to run without tripping.
Which abnormal states are categorized as a light alarm ("Light alarm" object) should be defined with
function codes H181 to H184 beforehand.
Assigning the LALM signal to any one of the digital output signals 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 details of the light alarm objects, refer to Chapter 9, Section 9.3.1 "Alarm Codes."
 How to reset a light alarm
If the light alarm factor has been removed, pressing the
and turns LALM signal OFF. If not, pressing 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
Alarm Info." It is possible to check the factors of the last five light alarms.
/
Name
1: Analog voltage input to terminal [12]
1: External digital input signal
98: Run forward command FWD
99: Run reverse command REV
key turns the WARN. LED ON and then the
key and select "2. Light Alarm History" of "4.
5-37
5.5 Running Mode
/ key) and frequency commands are
Data
key stops flashing of the WARN. LED
Factory
default
0
0
98
99