Soft starters DS and DM - Moeller Electric Parts
Soft starters DS and DM - Moeller Electric Parts
Soft starters DS and DM - Moeller Electric Parts
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<strong>DS</strong>4 soft <strong>starters</strong><br />
14/4<br />
Description<br />
<strong>Soft</strong> <strong>starters</strong><br />
<strong>DS</strong>4<br />
<strong>Soft</strong> starter for three-phase motor:<br />
• <strong>DS</strong>4-340-…-M(R)<br />
• <strong>DS</strong>4-340-…-MX(R)<br />
<strong>DS</strong>4-340-…-M(R)<br />
Two-phase-controlled soft <strong>starters</strong> rated 2.2 to 11 kW for three-phase AC motors.<br />
Devices with type suffix “R” are equipped with an additional built-in reversing<br />
function.<br />
Used as semiconductor contactor (DOL starter) the “DOL actuation” causes the<br />
motor to be switched on at the ideal point <strong>and</strong> suppresses closing transients that<br />
cause current <strong>and</strong> torque oscillations of up to 20 times the motor’s rated current.<br />
<strong>DS</strong>4-340-…-MX(R)<br />
Two-phase controlled soft starter with internal bypass for three-phase motors 7.5<br />
… 15 kW.<br />
Devices with part no. suffix “R” have an additional built-in reversing function (7.5<br />
… 15 kW). A special drive method suppresses the DC component that usually occurs<br />
in two-phase control systems. The <strong>DS</strong>4 can therefore be used to start applications<br />
which previously required three-phase soft <strong>starters</strong>. The <strong>DS</strong>4 versions MX(R) are laid<br />
out for normal duty cycle requirements.<br />
L1 L2 L3<br />
T1 T2 T3<br />
<strong>Moeller</strong> HPL0211-2007/2008<br />
<strong>DS</strong>4-340-M <strong>DS</strong>4-340-MR<br />
L1 L2 L3<br />
T1 T2 T3<br />
<strong>DS</strong>4-340-MX<br />
<strong>DS</strong>4-340-MXR<br />
Part no. overview Application examples<br />
L1 L2 L3<br />
T1 T2 T3<br />
http://catalog.moeller.net<br />
L1 L2 L3<br />
T1 T2 T3<br />
• Frequent <strong>and</strong> silent switching of motors including reversing<br />
• Application examples<br />
• Replacement of reversing contactor combinations<br />
• Pump drives: <strong>Soft</strong> starting prevents sudden pressure surges. The mechanical<br />
load on the whole plant is reduced <strong>and</strong> its service life increases.<br />
• Fan drives: <strong>Soft</strong> starting prevents drive belt slippage <strong>and</strong> premature wear. The<br />
plant’s lifespan is increased.<br />
• Conveyor belts: the belt starts smoothly <strong>and</strong> the transported goods do not fall<br />
over. The mechanical load on the whole system is reduced <strong>and</strong> its lifespan<br />
increases.<br />
Documentation<br />
You can download the documentation for the <strong>DS</strong>4 soft <strong>starters</strong> from the Internet:<br />
http://www.moeller.net/support<br />
AWA8250-1944<br />
AWA8250-1920<br />
For <strong>Moeller</strong> <strong>Electric</strong> Sales <strong>and</strong> Support call KMparts.com (866) 595-9616
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