Fuji Electric FRENIC-Ace series - Page 351

5.3 Description of Function Codes
5-181
FUNCTION CODES
Chap 5
■ Hexadecimal expression
A 4-bit binary number can be expressed in hexadecimal format (hexadecimal digit). The table below shows the
correspondence between the two notations.
Table 5.3-18 Binary and Hexadecimal Conversion
Binary Hexadecimal Binary Hexadecimal
0 0 0 0
0
1 0 0 0
8
0 0 0 1
1
1 0 0 1
9
0 0 1 0
2
1 0 1 0
a
0 0 1 1
3
1 0 1 1
b
0 1 0 0
4
1 1 0 0
c
0 1 0 1
5
1 1 0 1
d
0 1 1 0
6
1 1 1 0
e
0 1 1 1
7
1 1 1 1
f
When H26 = 1 (PTC (The inverter immediately trips with
0h4
displayed)), if the PTC thermistor is
activated, the inverter stops without displaying l
-
al, blinking the KEYPAD CONTROL LED, or outputting
L
-
ALM signal, regardless of the assignment of bit 11 (PTC thermistor activated) by H82 (Light Alarm
Selection 2).
■ Light alarm – “L-ALM” (E20, E21 and E27, data = 98)
This output signal “L-ALM” comes ON when a light alarm occurs.
H84, H85
Pre-excitation (Initial level, Time)
A motor generates torque with magnetic flux and torque current. Lag elements of the rising edge of magnetic flux
causes a phenomenon in which enough torque is not generated at the moment of the motor start. To obtain
enough torque even at the moment of motor start, enable the pre-excitation with H84 and H85 so that magnetic
flux is established before a motor start.
■ Pre-excitation (Initial level) (H84)
H84 specifies the forcing function for the pre-excitation. It is used to shorten the pre-excitation time. Basically, there
is no need to modify the default setting. If the inverter determines that the magnetic flux is established, then
excitation level will return to 100 percent.
• Data setting range: 100 to 400 (%) (exciting current level in percentage)