Eaton DS7 Series, Manual

Page: 127 / 240

7 Connection examples
7.1 Size 1 (4 – 12 A)
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
123
7.1.5 Rotation direction reversal with soft stop ramp
Q1 = Cable and motor
protection
Q11 = mains contactor FWD
(clockwise rotating field)
Q12 = mains contactor REV
(anticlockwise rotating field)
F3 = optional semiconductor
fuse for type 2 coordination in
addition to Q1
Figure 86: Rotation direction reversal with ramp
K4T: Simulated RUN
signal -
K2T is an off-delayed
timing relay (type ETR2)
and simulates here the
RUN signal. The reset
time must be greater
than the stop time (t-
Stop) set on the soft
starter. Switching to the
other operating
direction is only
possible after the value
set here has elapsed.
The soft stop is also
active here after an
emergency-stop
command.
Figure 87: Control section Bidirectional operation
￫
The control voltages (+U
S
) of the DS7 soft starter and the contactor
control must have the same potential: 24 V DC/AC or 120/230 V AC
M
3 ~
1L1 3L2 5L3
2T1 4T2 6T3
L1
L2
L3
PE
Q1
Q21
M1
Q11
F3
Q12
I > I > I >
- A2 + U
s
(+) U
s
24 V AC/DC, 120/230 V AC
(–) U
s
K4T
K1
FWD
Q12
K2
K2
Q11
K1
L01/L+
L00/L-
REV
STOP
Q1
Q11 Q12 K4T
B1
A2
A1
t > t-Stop
Q21
A2
A1
Q12 K2 Q11 K1 K2 K1
K2 K1
FWD REV DS7 FWD REV