YOKOGAWA DTSXL, User Manual, Page: 39 / 289

< PART – A Hardware >
A-16
IM 39J06B40-01EN 14th Edition: May 30, 2022
A3. Power Supply Equipment
The DTSXL System uses the same power supply modules as the FCN/FCN-RTU.
This manual describes the use of the power supply module in a DTSXL System.
Proper power equipment must be used for stable system operation. This section
describes the following topics:
· Power supply system
· Grounding
SEE ALSO
For details on the power supply specifications, read the STARDOM FCN/FCJ Guide (IM 34P02Q01-
01E).
A3.1. Power Supply System
This section describes the power supply system for DTSXL System.
- System Separation
The power supply system for the DTSXL System must be separated from other
systems.
- Installation of Breakers, Switches, etc.
The power supply module for the DTSXL System has no switch. An external
breaker or an external switch should be installed for maintenance and safety
purposes.
IMPORTANT
To conform the power supply system for the DTSXL System to safety standards, use a
breaker or a switch that conforms to the safety standards.
A3.2. Supplied Power Source
The following items must be considered to ensure stable DTSXL System operation.

Supplied Power Source Voltage Distortion (AC power)
Power failure may be detected even if the effective value is the same when the peak of
the input voltage waveform is decreased due to a deformed crest of the waveform.
This may be caused by the output impedance of the supply source or a voltage drop due
to the impedance of wiring. If the supplied input voltage meets the following condition,
the rated instantaneous power failure sense delay time may not be maintained, which
may cause instantaneous power failure. Therefore, a solution so that stable power can
be supplied must be applied at the power source.
Peak value of the input voltage
＜
Lower limit of Input voltage
×√
2
×
0.99