Basic Installation and Operation Guide
TE Series Digital Solid State Soft Starters 18 – 1250A
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P a g e
Appendix 4 (cont.) External OL Relay Applications
SPECIAL MOTOR APPLICATIONS
2S-2W Motors
2 speed / 2 winding motor applications require a separate OLR sized for
each set of windings. These would need to be external OLRs.
In this example:
The
TE Series
is used ahead of an
existing
2S2W starter, which already
has separate OLRs for each speed. Dry Aux. contacts of the 2S2W
starter are used to provide a Run command to the
TE Series
so that all
existing controls can be used. In addition, another dry Aux. of the Fast
contactor is used to select Ramp 2. When started in Slow, Ramp 1
(default) is used. If started in Fast, different ramp settings are necessary
so Ramp 2 is used. (See section 4.2.5.a for Dual Ramp info.)
Either OLR will trip the TE Series, which will display [Ptc] and light the “Overload” LED.
TE Starter
.
Bypass
Contactor
"BP"
Disconnect
or
Circuit
Breaker
.
.
G
R /
L1
T /
L3
S /
L2
U /
T1
W /
T3
V /
T2
1
2
3
A1
A2
120VAC CONTROL POWER
TE...-BP Series
Control Wiring
TE-TB1
(24VDC)
TE-TB-2
9
10
TE-TB1
(PTC Input)
Slow
OL
Fast
OL
2S2W
MTR
MS
MF
MS
MF
2S2W
Starter
(Logic not shown for clarity)
MS
MF
External 2-Speed 2-Winding (2S2W ) Starter
6
7
MF
TE-TB1
(Ramp 2
)
Solid State Overload
Slow Speed Overload
Fast Speed Overload
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