User Manual
EM303B General Purpose Inverter
84
Run
Forward/Reverse
RUN
F/R
COM
PLC
24V
EM303B
Inverter
f
Time
RUN
F/R
Output
Frequency
-f
(a)F0
-
05=0 2-wire sequence
(b)F0
-
20=0, F0
-
05=0
Forward/Reverse running sequence
Reverse
RUN
F/R
COM
PLC
24V
EM303B
Inverter
Forward
f
Time
RUN
F/R
Output
Frequency
-f
(c)F0
-
05=1 2-wire sequence
(d)F0
-
20=0, F0
-
05=1
Forward/Reverse running sequence
Figure 7-2 2-Wire Sequence
When F0-05= 0 or 1, even if terminal RUN is ON, inverter can be stopped by
pressing
STOP
RESET
, stop command of external terminal, or monocycle time of PLC is
up. Meanwhile, inverter reenters running status only when terminal RUN is ON
again after OFF once.
3-wire sequence:
F0-05=2
RUN is NO forward running button, F/R is NO reverse running button, Xi is NC
stop button, all of them will be on at pulse edge. In running status, the inverter stops if
pressing Xi button. When stop mode is selected as ramp-to-stop (F0
-
20=0), see Figure 7-3
(b) for the sequence diagram. Xi is the terminal among X1~X7 defined as 3-Wire Sequence
Run/Stop Control by F2
-
00
~
F2
-
06.
F0-05=3
F/R is forward/reverse switching button (Forward when F/R is off, and reverse
when F/R is on.) RUN is NO running button, and Xi is NC stop button, all of them will be
on at pulse edge (F/R is on at level). When stop mode is selected as ramp-to-stop (F0-20=0),
the sequence diagram is as shown in Figure 7-3(d).