8 
VFD-B Series 
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 
8-5
Parameters Explanation  Settings 
Factory 
Setting
00: Decelerate to 0 Hz 
01: Stop immediately and display “EF” 
02-07  Loss of ACI Signal   
02: Continue operation by last frequency 
command 
00 
00: Based on Accel/Decel Time 
02-08  Up/Down Key Mode    
01: Constant speed 
00 
02-09 
The Acce/Decel Speed of 
the UP/DOWN Key with 
Constant Speed     
0.01~1.00 Hz/msec  0.01 
00: Digital keypad 
01: 0 to +10V from AVI 
02: 4 to 20mA from ACI 
03: -10 to +10Vdc from AUI 
02-10 
Source of the Master 
Frequency Command 
(FCHA)  
04: RS-485 communication interface 
00 
00: Digital keypad 
01: 0 to +10V from AVI 
02: 4 to 20mA from ACI 
03: -10 to +10Vdc from AUI 
02-11 
Source of the Auxiliary 
Frequency Command 
(FCHB)   
04: RS-485 communication interface 
00 
00: Master frequency + Auxiliary frequency
02-12 
Combination of the Master 
and Auxiliary Frequency 
Command   
01: Master frequency - Auxiliary frequency
00 
00: Master Frequency determined by the 
digital keypad or external UP/DOWN 
keys of the Multi Function Inputs. 
01: 0 to +10V from AVI 
02: 4 to 20mA from ACI 
03: -10 to +10Vdc from AUI 
04: RS-485 communication interface   
05: RS-485 communication interface. It 
won’t memorize the frequency. 
02-13 
Source of Second 
Frequency Command    
06: Combined usage of the master and 
auxiliary frequency command Pr. 
02-10, 02-11,02-12 
00 
00: Controlled by the digital keypad 
01: Controlled by the external terminals, 
keypad STOP enabled. 
02-14 
Source of Second 
Operation Command    
02: Controlled by the external terminals, 
keypad STOP disabled. 
00