Toshiba 18 - 1250 A Instruction Manual page 29

TE Series Digital Solid State Soft Starters 18 – 1250A
4.2.9 Bypass Contactor Control
On TE...-BP version (and NEMA 12 enclosed) starters, an internal
dedicated connection is used at the factory for automatically controlling
the Bypass Contactor. Field wiring for Bypass Contactor operation is not
required.
4.2.9.a Independent Bypass Contactor Control
The TE...-BP Series starters use standard industrial contactors that
can be controlled independent of the starter electronics if
necessary. When doing so, it is necessary to size the starter based
upon the ATL (Across-the-Line) selection chart so that the
contactors are rated for ATL duty instead of the normal Shunt Duty
(see section 1.2.3). Supplemental overload protection will be
required (see section 3.1.3.c).
Units have external terminal blocks marked for this purpose (see
Appendix 5 for drawings). A dry (voltage free) contact closure
between these terminals will close the bypass contactor
immediately. The Bypass Contactor coil voltage is the same as the
control voltage (120VAC unless the optional 240VAC control is
specified), and the potential on these terminals is the same as the
coil voltage.
No field wiring is necessary to these terminals if this feature is
not used.
For all other styles of TE Series, the At-Speed signaling can be
programmed into any of the three Output relays above (section 4.2.8
and Table 5.6.10).
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