IOEM/REM Safey and Installation Guide
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IOEM/REM Safey and Installation Guide
35
IOEM ground
REM ground
Installation and Wiring
7.
Terminate other end of the earth ground wire to a cold water pipe, steel
rod, copper pipe, or earth ground.
8.
Complete other wiring to IOEM and REM.
9.
Step 3 Wire Power
IOEM and REM expansion modules are available with either AC or DC power. The
DC version can only be powered by DC power. The AC version can be powered by
either AC or DC. If an AC version is properly wired and configured for AC and
DC backup, and AC power fails, the instrument will be powered by DC backup
which supplies backup power. No user configuration is needed for the DC battery
backup and low DC power alarm to function.
CAUTION: At 120VAC, the IOEM and REM draws 25 watts (~0.2 amps).
Use wiring suitable for that load following all safety information and local
electrical codes.
Back up power is recommended when operating with AC power. Backup power
can be supplied by 12VDC or UPS battery source.
Wire AC Power
The AC power option includes an integrated universal (worldwide) AC switching
power supply, allowing AC power from any AC receptacle 100-240VAC. AC power
wires are terminated at location
C
on I/O Board.
Directions to Wire AC Power
WARNING: Disconnect external power to the unit before wiring.
AVERTISSEMENT : déconnectez l’alimentation externe de l’unité avant
d’effectuer un câblage quelconque.
1.
Perform steps 1 - 2 of IOEM and REM installation.
2.
3.
Install ferrite bead on to the line cord (AC power cord). The ferrite bead
(YSI p/n 606399, ferrite bead figure below) should be installed as close
to the module board as possible. Strip approximately 16.5 cm (6.5 in) of
insulating jacket off the end of the cord. Feed AC power cable through
drilled hole in rubber grommet in compression fitting to location (IOEM)
B
/
(REM)
C
and then pass the conductors through the ferrite bead 1
time. This will result in a loop of each conductor around the bead (ferrite
bead assembled figure below).
Installation and Wiring
