TECO speecon 7200ma - Forward;Reverse Change (Setting：00); 3-Wire Mode Connection Diagram; Operation Sequence in 3-Wire Mode; 2-Wire Mode Connection Diagram

80
•
Forward/Reverse Change (setting
：00)
•Under 3-wire initialization mode (Sn-03= 8 or 10 or 12)，the multi-function input
terminals g~j have setting “00”, the inverter will be in the 3-wire mode operation.
As shown in Fig. 38, the Forward/Reverse change mode is set at the terminal g.
Run Command
(ON : run)
SC
Run
(A contact)
1
2
5
Stop
(B contact)
Stop Command
(OFF : stop)
FWD/REV Cmd.
(multi-func.
input terminal)
RUN cmd.
STOP cmd.
FWD/REV
cmd.
ON or OFF
OFF
(stop)
OFF (FWD)
ON (REV)
STOP FWD REV
> 50 ms
Motor
Speed
FWDSTOP
Fig. 38
3-wire mode connection
diagram
Fig. 39Operation sequence in 3-wire mode
•Input STOP Command during 2-Wire Mode Operation (setting：01)
•Under a standard 2-wire initialization mode as shown in Fig. 40(a), S1 and S2 can
not be both “ON” at the same time.
When S1=”ON” and S2=”OFF”, the motor is FWD running. When S1=”OFF” and
S2=”ON”, the motor is REV running. When S1=”OFF” and S2=”OFF”, the motor
stops running.
•When Sn-25=’01’, the 2-wire operation mode has its self-sustaining function. Only
through the multi-function input terminal g, the operator can stop the inverter after
pressing the “STOP” key as shown in Fig. 40(b). As shown in Fig. 40(b), the
switches S1, S2 and S3 do not need to be the self-sustaining switches. When S1 is
depressed “ON”, the motor will be forward running. After S3 is depressed “ON”,
the motor will stop. When S2 is depressed “ON”, the motor will be reverse running.
After S3 is depressed “ON”, the motor will stop.
FWD_RUN/STOP
SC
2
1
S1
OFF
ON
REV_RUN/STOP
S2
OFF
ON
(a)
FWD_RUN
SC
RWD_RUN
STOP
S1
S2
S3
1
2
5
(b)
Fig. 40 2-wire mode connection diagram
Note：1. For the other setting value (except “00”, “01”), the external operation mode is
defaulted as 2-wire mode and no self-sustaining function. (that is, the inverter
will stop when contact
c
and
d
are not close.)。
2. Under the 2-wire mode, the error message “Freq. Comm. Error” will be
displayed in the digital operator when terminal
c
and
d
are both ON at the
same time, the inverter will stop. After the above case cleared, the inverter
will return normal.