Eaton DS7 Series, Manual

Page: 43 / 240

2 Engineering
2.9 DS7-SWD and PKE motor-protective circuit-breakers
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
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2.9 DS7-SWD and PKE motor-protective circuit-breakers
DS7-SWD soft starters can also provide the following functions when used
together with a PKE motor-protective circuit-breaker:
• Protecting the DS7 soft starter against overload
• adjustable current limitation,
• ZMR overload relay function (in the event of an overload, the DS7 soft
starter will switch off the load, instead of the PKE motor-protective
circuit-breaker doing so)
• Currents readable via SmartWire-DT
￫
After a motor protective device has tripped, the soft starter and
the protective device cannot be switched on again until it has
cooled down. The reset depends on the temperature.
Figure 21: Motor-starter combination: DS7-SWD and PKE
￫
Only PKE trip blocks (PKE-XTUWA-32, PKE-XTUA-…) should be
used for motor protection in combination with DS7 soft starters.
PKE trip block PKE-XTUCP-… for system protection must not be
used in combination with a soft starter DS7! In combination
with SmartWire-DT this can cause false tripping.
M
3 ~
1L1 3L2 5L3
2T1 4T2 6T3
L1
L2
L3
PE
Q1
Q21
BG1, BG2
M1
I > I > I >
SWD4-8SF2-5
+ 15V