Toshiba 48-1250 A Manual Do Utilizador

Connect appropriate power lines to the unit input terminals marked L1, L2, L3.
Avoid routing power wires near the control board. Connect the motor leads to the
unit terminals marked T1, T2, T3. Refer to NEC standards for wire length and sizing.
Never interchange input and output connections to the unit. This could cause
excessive voltage in the control logic circuit and may damage the unit.

The unit must be tested with a motor or other test load connected
to the load side of the unit. (A load bank can be used if a motor is
not available). Note that line voltage will appear across the output terminals if
there is no motor or load connected to the unit. In areas where lightning is a
significant problem, station-type air gap lightning arrestors should be considered
and utilized on the input power source.

Connect the ground cable to the ground terminal as labeled on the unit. Refer
to the National Electrical Code for the proper ground wire sizing and be sure
that the ground connector is connected to earth ground.

Separate 120Vac supply is required (240Vac for 380V and 415V
applications). The control voltage should be connected to pins 1 and 6 of
TB4 on the power board. This control voltage must be customer supplied,
unless an optional control power transformer (See chart) has been supplied
with the unit.

Unit comes standard with 120Vac
control. Order 240Vac control as an
option if required.

For standard 3-wire control connect 120Vac (or 240Vac for 415V and
380V applications) to pins 1 and 6 of TB4.  Connect N.C. (normally
closed) stop button between pins 3 and 4 of TB4.  Connect N.O.
(normally open) start button between pins 4 and 5 of terminal block
TB4.

Power Connections

Note:
1. If power is used for additional accessory items (Lights, fans, etc.)

contact factory for sizing.

Control

Power

Source

Control

Power

Return

Three-Wire Connection

* Transformer size is adequate to power built-in bypass contactors on these models.