Toshiba TE2 Series - Page 92

TE2 Series Digital Solid State Soft Starter User Manual 83 | Page
Appendix 4 (cont.) External OL Relay Applications
SPECIAL MOTOR APPLICATIONS
2S2W 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 TE2 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 TE2 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 4.2.5a for Dual Ramp info.)
Either OLR will trip the TE2 Series, which will display [Ptc] and light the “Overload” LED.
TE2 Starter
.
Bypass
Contactor
"BP"
Disconnect
o
r
Circuit
Breake
r
Solid State
.
Over Loa
d
.
G
R /
L1
T
/
L3
S /
L2
U
/
T1
W
/
T3
V
/
T2
Slow
Over Load
1 2 3
A1 A2
120VAC CONTROL POWER
TE2...-BP Series
Control Wiring
TE2-TB1
(24VDC)
TE2 -TB-2
Fast
Over Load
4
5
TE2 -TB1
(NC Input)
Slow
OL
Fast
OL
2S2
W
MTR
MS
MF
MS
MF
2S2W Starte
r
(Logic not shown for clarity)
MS
M
F
External 2-Speed 2-Winding ( 2S2W ) Starte
r
6 7
MF
TE2 -TB1
(Ramp 2 )