Moeller Wiring Manual 02/05 - Klockner Moeller Parts

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Moeller Wiring Manual 02/05
Electronic motor starters and drives
Soft starters DM4
Standard applications (selector switch)
Labelling on
device
Indication on
keypad
Delta circuit
Normally, soft starters are connected directly in
series (in-line) with the motor. The DM4 soft
starters also allow a delta connection.
Advantage:
This is a less expensive alternative since the soft
starter has to deliver only 58 % of the motor’s
rated current.
Disadvantages over in-line connection:
As in a star-delta circuit, the motor must be
connected with six conductors.
The DM4’s overload protection is active only in
one phase, so that additional motor protection
must be fitted in the parallel phase or in the
supply cable.
Meaning Notes
Standard Standard Standard Default settings, suitable without adaptation
for most applications
High torque1) High Torque High breakaway
torque
Drives with higher friction torque at standstill
Pump Pump Small pump Pump drives up to 15 kW
Pump
Kickstart
Light
conveyor
Heavy
conveyor
Low inertia
fan
High inertia
fan
Recip
compressor
Screw
compressor
Pump.w.Kick Large pump Pump drives over 15 kW Longer deceleration
times.
LightConvey Light conveyor
HeavyConvey Heavy-duty
conveyor
LowInert.fan Low-inertia fan Fan drive with relatively small mass inertia
moment of up to 15 times the motor’s inertia
moment
HighInertfan High-inertia fan Fan drive with relatively large mass inertia
moment of over 15 times the motor’s inertia
moment Longer ramp-up times.
RecipCompres Reciprocal
compressor
ScrewCompres Screw
compressor
Higher start pedestal, p.f. optimization
matched
Increased current consumption, no current
limitation
1) For the “High Torque” setting, the soft starter must be able to supply 1.5 times the motor’s rated current.
Note:
The delta connection is more cost-effective at
motor ratings over 30 kW and when replacing
star-delta switches.
For 2-24Immediate
Delivery call KMParts.com at (866) 595-9616