Power Up/Down Sequence; Power Down Sequence - Toshiba V Series User Manual

4.10 Power up/down sequence

For operating S2 safely, configure an external circuit to execute the power up/down
sequence described below.
(Power up sequence)
(1) Turn on the model 2000's
(1) Turn on power of the model 2000 at first. When using expansion units, arrange for
power to be supplied simultaneously to the basic unit and the expansion units.
Use the same power lines for them.
If it is difficult, turn on power of the expansion units before turing on that of the basic
unit.
(2) Turn on power for I/O modules and loads simultaneously.
Use the same power lines for them.
If it is difficult, turn on the external power for I/O modules before turing on the power
for the loads.

(Power down sequence)

(1) Turn off the external power for I/O
(1) Turn off the external power for I/O modules and loads simultaneously.
Or turn off power for loads and turn off power for I/O modules in turn.
(2) Turn off power of the model 2000.
When using expansion units, turn off power of the basic unit and the expansion units
simulataneously.
Or turn off power of the expansion units after turning off power of the basic unit.
1. Configure an external circuit to turn on power supplies in the following order:
Power up of model 2000
If this power up sequence is not carried out, malfunction may occur resulting in damages to
the equipment or accidents.
2. If possible, use a common power supply for the external power supply to I/O modules and
load power. If it is not possible, configure the system so that the external power supply and
load power turn off simultaneously. For the safety of the system, turn off the load power
before turning off model 2000. If this sequence is not carried out, damages to the equipment
or accidents may occur.
6F8C0836
power
modules and loads.
→
Turn on the external power supply to I/O modules and load power
4.10 Power up/down sequence
(2) Turn on the extrenal power for I/O modules
and loads
(2) Turn off power to the model
2000
Caution
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