Yokogawa YFGW510 - Manual (Page 27)

<C2. Power Supply and Grounding>
C2-1
IM 01W02E01-01EN
C2. Power Supply and Grounding
An appropriate power supply is necessary for the stable operation of YFGW510.
C2.1 Power Supply
Connect the power source to the power supply terminal in the device.
SEE
ALSO
For details of the power supply and power consumption of YFGW510, see C1. Installation Environment.
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.
Item Specification Remarks
Inrush current 8 A (5 ms or less) At 26.4 V DC
SEE
ALSO
For details of power supply wiring, see C5.1 Power Supply Cable Connection.
IMPORTANT
YFGW510 does not have a power switch. Provide a breaker or switch for the power line to turn
ON/OFF the device.
• 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.
• Please supply the power from the permanent power supply to avoid.
C2.2 Grounding
Appropriate grounding is necessary for the stable operation of YFGW510. Class D grounding
(the third class grounding) with the grounding resistance of 100 Ω or less is necessary. To con-
nect the grounding cable to YFGW510 directly, use the ground terminal on the right side of the
housing.
SEE
ALSO
For details of ground wiring, see C5.2 Grounding Cable Connection.