3 
VFD-B Series 
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 
3-7
3.3 Terminal Explanations
 
 
Terminal Symbol  Explanation of Terminal Function 
R/L1, S/L2, T/L3    AC line input terminals 
U/T1, V/T2, W/T3  AC drive output terminals motor connections 
+1,+2  Connections for DC Link Reactor (optional) 
+2/B1~B2  Connections for Braking Resistor (optional) 
+2 ~ -(minus sign) 
+2/B1~ -(minus sign) 
Connections for External Braking Unit (VFDB series) 
 
Earth Ground 
3.4 Control Terminals Explanations 
 
Terminal Symbols  Terminal Functions  Factory Settings 
FWD Forward-Stop command  
REV Reverse-Stop command  
JOG Jog command   
EF External fault   
TRG  External counter input   
MI1 
Multi-function Input 1 
MI2 
Multi-function Input 2 
MI3 
Multi-function Input 3 
MI4 
Multi-function Input 4 
MI5 
Multi-function Input 5 
MI6 
Multi-function Input 6 
Refer to Pr.04-04 to Pr.04-09 
Multi-function Input Terminals 
DFM 
Digital Frequency Meter 
(Open Collector Output) 
Factory setting 1:1   
(Maximum 48VDC, 50mA) 
+24V 
DC Voltage Source   
(+24V, 20mA), used for source mode.
DCM 
Digital Signal Common 
Used as common for digital inputs 
and used for sink mode.