Digital input/ output parameter group 03
PARAMETER DESCRIPTION 90
Terminal STF
input function
STF/STR +STOP (Use with RUN signal, when ON, motor
runs reverse, when OFF, motor stops then runs forward.)
P_MRS (Stops inverter output immediately by pulse signal
input)
RUN_EN (Enable digital input terminal operation)
PID_OFF (Enable digital input terminal turning off PID)
Second frequency command source mode
Fire mode command 1( RUN command included)
Fire mode command 2( RUN command excluded)
Terminal STR
input function
Terminal M0 input
function
Terminal M1 input
function
Digital input terminals function selection
In default, 03-03(P.80)=2(RL), 03-04(P.81)=3(RM), 03-00(P.83)=0(STF), 03-01(P.84)=1(STR).
Changing terminal input function values change the function of the terminals. For example, 03-03(P.80)=2 means
that M0 terminal acts as RL. If 03-03(P.80) is set to 8, M0 terminal function will change to RT, which will act as
“second function”. Another example, 03-00(P.83)=0 means that STF terminal serves as “inverter runs forward”
function, and if change 03-00(P.83) to 6, STF terminal function will change to OH, which will serve as the input
terminal of external thermal relay
Set value:6 OH(External thermal relay):
Old motors usually come with thermal relay attached to the front of the motor to prevent motor from overheating.
When external thermal relay actuate, inverter will alarm and show “OHT” on keypad.
Four different wiring techniques (1 means ON, 0 means Off, and X = 0,1,3,4)
1) Two-wire control mode 1:
K0
K1
STF(03-0X(P.8X)=0)
STR(03-0X(P.8X)=1)
SD
K0 K1
Run
command
0
1
0
1
11
0
0
Stop
Forward
Reverse
Stop