AMETEK ReFlex - Manual (Page 226)

ReFlex Power™ DC Power Supplies
M380056-01 Rev K 6-23
3.5mA, a second safety ground connection is required. It should be connected to
the safety ground stud on the rear panel of the Mainframe.
WARNING
A separate, dedicated safety ground wire must be connected to the
Mainframe rear panel safety ground stud. Operating the ReFlex Power™
system with the safety ground wire disconnected could result in a shock
hazard.
6.4.6
AC/DC I
NPUT
O
VERCURRENT
P
ROTECTION
The modules have internal overcurrent protection to provide fault isolation in
case a failure occurs of internal components or wiring. However, overcurrent
protection must also be provided externally, within the system installation, for the
AC/DC input of the Mainframe. Refer to the Mainframe manual for
recommendations.
6.4.7 AC/DC I
NPUT
D
ISCONNECT
D
EVICE
The ReFlex Power™ system does not have any means to disconnect it from the
AC/DC input service. The front panel POWER switch of the Controller module in
the Mainframe does not disconnect the AC/DC input line from the modules or
Mainframe. Ensure that a suitable disconnecting device is incorporated into the
system installation, so that isolation will be provided when it is opened. The
switch or circuit breaker must be located close to the ReFlex Power™ system,
within reach of the operator, and clearly labeled as the disconnection device.
WARNING
To prevent a shock hazard, ensure that the AC/DC input disconnect
device is open, and that the safety ground conductor is connected to the
rear panel ground stud, before removing/inserting modules from/into the
Mainframe. The Mainframe backplane input power distribution remains
energized whenever the AC/DC input is connected.