Yokogawa YFGW410 - Manual (Page 33)

C2-1
IM 01W02D01-01EN
C2. Power Supply and Grounding
An appropriate power supply is necessary for the stable operation of YFGW410.
C2.1 Power Supply
Connect the power source to the spring terminal block located on the top of YFGW410.
SEE
ALSO
For power supply and current consumption of the YFGW410, also see GS 01W02D01-01EN
n Inrush current
When starting up, inrush current may run into the device. As shown in the table below, this cur-
rent is, even though short-lived, significantly larger (10 times or more) than the steady state cur-
rent. Make sure that the power supply and protector can endure the inrush current.
Table C2-1 Inrush current specifications
Item Specifications Remarks
Inrush current 30 A, 2 ms or less At 26.4 VDC
SEE
ALSO
For wiring of the YFGW410 power supply, see Section C4.2 Power Supply Cable Connection.
WARNING
• Configuration data may be corrupted if a power failure occurs during download to
YFGW410, YFGW510 and field wireless devices. Configuration data is not corrupted even if
a power failure occurs at the time of the usual operation.
• When power failure is detected, the system may take a certain amount of time to recover to
the normal operation status.
• Please supply the power from the permanent power supply to avoid.
IMPORTANT
- YFGW410 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.