Eaton DS7 - Page 129

7 Connection examples
7.1 Size 1 (4 – 12 A)
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 125
Q1, Q11, Q12 = MSC-R motor starter combination is a compact device with
electrical and mechanical interlocking. The NHI-E-10-PKZ0 auxiliary contact ③ is
added to Q1 for cable and motor protection.
￫
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
② Reversing starter MSC-R… ③ Standard auxiliary contact (grey)
NHI-E-10-PKZ0
Two DILA-XHI20 auxiliary contact modules are added to the reversing
contactors Q11 and Q12. The 53/54 NO contact is used for the self-
maintaining of Q11 and Q12; NO contact 63/64 actuates the timing relay
K2T and the soft starter Q21. The pushbutton actuators 0, I, II as a
complete device (M22-I3-M1) for surface mounting ① enable the rotation
direction change.
① Contact sequence
M22-I3-M1 assembled control station
K4T is an off-delayed timing relay (part no. ETR2) and simulates here the
RUN signal. The reset time must be greater than the stop time (t-Stop) set
on the DS7 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.
22
21
14
13
22
21
14
13
22
21
14
13
Relais LED (gelb)
A1-A2
B1 t > t-Stop
15-16 / 25-26
t
Power LED (grün)