Toshiba TE Series Instruction Manual page 86

Basic Installation and Operation Guide
Appendix 4 (cont.) External OL Relay Applications
Either OLR will trip the TE Series, which will display [Ptc] and light the "Overload" LED.
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TE Series Digital Solid State Soft Starters 18 – 1250A
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.
Disconnect
or
Circuit
Breaker
R / S / T /
TE Starter
L1 L2 L3
.
Solid State Overload
.
Bypass
Contactor
"BP"
U / V / W /
T1 T2 T3 G
MS
Slow Speed Overload
2S2W
MTR
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.)
120VAC CONTROL POWER
2S2W Starter
(Logic not shown for clarity)
.
MF
MS MF
1 2 3
6 7
TE-TB1
TE-TB1
(24VDC)
(Ramp 2 )
External 2-Speed 2-Winding (2S2W ) Starter
MF
Fast Speed Overload
A1 A2
TE-TB-2
MS
MF
Slow
Fast
OL
OL
10
9
TE-TB1
(PTC Input)
TE...-BP Series
Control Wiring