Yokogawa YFGW610 - Manual (Page 22)

<B2. Power Supply and Grounding>
B2-1
IM 01W02D02-01EN
B2. Power Supply and Grounding
A reliable power supply is required to ensure stable YFGW610 operations.
Mount YFGW610 on the DIN rails being secured to the general-purpose instrumentation board or
others. No other type of mounting is allowed.
B2.1 Power Supply
Connect the power source to the power supply connector on the top of YFGW610.
SEE
ALSO
For power supply and current consumption of YFGW610, also see “GS 01W02D02-01EN”.
n Inrush current
When the power is turned on, inrush current may run into the device. As shown in the table be-
low, this current is, even though short-lived, significantly larger (10 times or more) than the steady
state current. Make sure that the power supply and protector can endure the inrush current.
Item Specifications Remarks
Inrush current 30 A, 2 msec or less At 26.4 V DC
SEE
ALSO
For wiring of the power supply, see “B4.2 Power Supply Cable Connection.”
WARNING
• If the power fails when downloading the system configuration data from YFGW410 or
YFGW510 to field wireless devices by using the Field Wireless Management Console, the
configuration data may be destroyed. (However, the system configuration data will not be
destroyed even if the power fails during normal system operation.)
• To avoid such a problem, supply the power source from the permanent power supply unit.
IMPORTANT
• YFGW610 does not have a power switch. Provide a breaker or switch for the external power
line to turn on/off the device.
• The overcurrent protection circuit of the power supply, it is recommended to use the auto-
matic-recover type with the reverse L-shaped.