Moeller. Wiring manual. Automation and Power distribution
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Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-57
2
DM4 without separate mains contactor
a Control voltage through Q1 or F1 or through
Q2
b See control section
c Motor current indication
~
=
~
=
7
M
M1
mot
T1
F2
3~
L1
L2
L3
N
PE
L N E1 E2 39
13
K1;RUN K2;TOR K3 K4
14 23 24 33 34 43
1L1
3L2
5L3
2T1
4T2
6T3
+12 8 1
7
62 63
PE
0 V (E1;E2)
+12 V DC
REF 1: 0–10 V
REF 2: 4–20 mA
T1 T2
F1
⎧
⎪
⎨
⎪
⎩
Q1 Q2
a
c
b
I
I> I> I> I> I> I>
- Thermistor
+ Thermistor
0 V Analog
Analog Out 1
Analog Out 2
0 V Analog
Start/Stop
Enable
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-58
2
DM 4-340 with separate mains contactor
Control section
n Emergency-Stop
S1: Off
S2: On
a Enable
b Soft start/Soft stop
ab
S1
S2
K1
E1
39
E2
39
S4
S3
K1
K1
K2K1
Q11
K2 T1 RUNK2
T1 K2 T1 Q11
13
14
33
34
T1 OK
(no error)
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-59
2
DM4-340 with separate mains contactor
a Control voltage through Q1 or F1 or through
Q2
b See Control section
c Motor current indication
~
=
~
=
7
M
M1
mot
T1
F2
3~
L1
L2
L3
N
PE
L N E1 E2 39
13
K1;RUN K2;TOR K3 K4
14 23 24 33 34 43
1L1
3L2
5L3
2T1
4T2
6T3
+12 8 1
7
62 63
PE
0 V (E1;E2)
+12 V DC
REF 1: 0–10 V
REF 2: 4–20 mA
T1 T2
F1
Q11
⎧
⎪
⎨
⎪
⎩
I >I > I >
Q1
I >I > I >
Q2
b
a
c
I
- Thermistor
+ Thermistor
0 V Analog
Analog Out 1
Analog Out 2
0 V Analog
Start/Stop
Enable
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-60
2
Bypass connection
After the run-up (full mains voltage reached) the
DM4 soft starter actuates the bypass contactor.
Thus, the motor is directly connected with the
mains.
Advantage:
• The soft starter’s heat dissipation is reduced to
the no-load dissipation.
• The limit values of radio interference class "B“
are adhered to.
The bypass contactor is now switched to a no-load
state and can therefore be AC-1 rated.
If an immediate de-energization is required in the
event of an Emergency-Stop, then the bypass
contactor must also switch the motor load. In this
case it must be AC-3 rated.
Control section
n Emergency-Stop
S1: Off
S2: On
a Enable
b Soft start/Soft stop
a b
S1
S2
K1
E2
39
E1
39
S4
S3
Q21
K1
K1 K1K2
K1
T1 T1
K2
K2
T1 RUN
Q11
13
14
23
24
T1 TOR
Q21
33
34
T1 OK
(no error)
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-61
2
DM4-340 with bypass
a Control voltage through Q1 or F1 or through
Q2
b See Control section
c Motor current indication
~
=
~
=
7
M
M1
mot
G1
F2
3~
L1
L2
L3
N
PE
L N E1 E2 39
13
K1;RUN K2;TOR K3 K4
14 23 24 33 34 43
1L1
3L2
5L3
2T1
4T2
6T3
+12 8
PE
1
7
62 63
0 V (E1;E2)
+12 V DC
REF 1: 0–10 V
REF 2: 4–20 mA
T1 T2
F1
Q11
⎧
⎪
⎨
⎪
⎩
Q1 Q1
b
a
c
Q21
I> I> I> I> I> I>
I
- Thermistor
+ Thermistor
0 V Analog
Analog Out 1
Analog Out 2
0 V Analog
Start/Stop
Enable
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-62
2
Delta connection
A delta connection allows the use of a soft starter
with a lower rating than the motor it is used to
control. Connected in series with each motor
winding, the current the soft starter needs to
supply is reduced by a factor of W3. This layout has
the drawback that six motor supply cables are
needed. Apart from that there are no restrictions.
All soft starter functions remain available.
For this you have to connect the motor in delta
and the voltage in this connection method must
agree with the mains voltage. For 400 V mains
voltage the motor must therefore be marked with
400 V/690 V.
Control section
n Emergency-Stop
S1: Off
S2: On
a Enable
b Soft start/Soft stop
E2: Enable
T1: +thermistor
T2: –thermistor
ab
S1
S2
K1
E1
39
E2
39
S4
S3
K1
K1
K2K1
Q11
K2
T1 K2 T1 Q11
T1 RUN
13
14
33
34
T1 OK
(no error)
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-63
2
DM4-340 Delta
a Control voltage through Q1 or F1 or through
Q2
b See Control section
c Motor current indication
~
=
~
=
7
M
M1
mot
T1
F2
3~
L1
L2
L3
N
PE
L N E1 E2 39
13
K1;RUN K2;TOR K3 K4
14 23 24 33 34 43
1L1
3L2
5L3
2T1
4T2
6T3
+12 8
PE
1
7
62 63
0 V (E1;E2)
+12 V DC
REF 1: 0–10 V
REF 2: 4–20 mA
T1 T2
F1
Q11
⎧
⎪
⎨
⎪
⎩
I >I > I >
Q1
I >I > I >
Q2
b
c
a
W1
V1
U1
W2
V2
U2
I
0 V Analog
Analog Out 1
Analog Out 2
0 V Analog
Start/Stop
Enable
Thermistor
Thermistor
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-64
2
Starting several motors sequentially with a soft starter
When starting several motors one after the other
using a soft starter, keep to the following
sequence when changing over:
• Start using soft starter
• Switch on bypass contactor
• Block soft starter
• Switch soft starter output to the next motor
• Restart
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-65
2
DM4-340 cascade
~
T1
L1
L2
L3
L
1L1
2L2
3L3
2T1
4T2
6T3
N
N
PE
PE
Q1
Q21
F2
T1
T2
=
F1
Q2
Q23
M1
M
3~
Q22
Q32
Q33
M2
M
3
~
Q32 Qn
Qn3
Mn
M
3~
Qm
I> I> I> I> I> I>
I> I> I>
I> I> I>
+ Thermistor
– Thermistor
Electronic motor starters and drives
Connection examples, DM4
Moeller Wiring Manual 02/05
2-66
2
Control section part 1
abcd
E1
39
T1
K2
13
14
K4
T1
RUN
K1T K4T
K4
23
24
K3
T1
TOR
E2
39
T1K1
S2 K1
K1
S1
Q21 Q31
K2
K1T
K4
K1 K4
Q11
K12 K22
Qn
Kn2
K4
33
34
T1 OK
(no error)