IOEM/REM Safey and Installation Guide
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IOEM/REM Safey and Installation Guide
39
Installation and Wiring
4.
Terminate AC power wires to pins “G” (ground), “L1”, and/or “L2/N”
according to applicable local electrical codes. Use minimum 18 gauge,
3 wire power cord.
CAUTION: It is recommended to use only the power cord provided to prevent
exceeding the current draw of the AC power supply.
5.
Complete other wiring to IOEM and REM.
6.
7.
Test AC power. PCB PWR status led will be solid green.
Wire DC Power and backup power
The IOEM and REM may be powered by most 9.0-16.5 VDC sources that provide
800mA of current and are isolated from mains supply by double or reinforced
insulation. The DC backup power source is user-supplied and can come from a
variety of choices including lead acid, gel cell, or UPS (with 12VDC transformer)
external batteries. DC power wires are terminated at location
A
on the IOEM and
REM boards.
Notes:
-
The IOEM and REM does not charge batteries. Quality assurance main-
tenance procedures should be established if batteries are to be fully
powered when used as back-up power source.
-
Power supply voltage above 16.5 VDC may permanently damage the
IOEM and REM.
-
When back up voltage falls below 9.0 volts, the IOEM and REM ceases
to operate properly.
-
Some switching DC power supplies not supplied by YSI may result in
noisy readings.
Directions to Wire DC Power/DC Backup Power
WARNING: Disconnect external power to the unit before wiring.
Follow
all manufacturer’s safety and installation instructions when providing power to
the IOEM and REM via a DC power supply.
AVERTISSEMENT : déconnectez l’alimentation externe de l’unité avant
d’effectuer le câblage. Suivez toutes les consignes de sécurité et d’installation
du fabricant lorsque vous fournissez de l’alimentation au modèle IOEM and
REM par un bloc d’alimentation à courant continu.
1.
Perform steps 1 - 2 of IOEM and REM installation.
2.
3.
Feed DC power cable through drilled hole in rubber grommet to location
A.
The terminal strip is removable.
CAUTION
: Run high and low voltage cables through separate bulkhead and
conduit.
4.
Terminate DC power wires to pins (-) and (+) according to manufacturer
instructions and any applicable local electrical codes.
IOEM DC power
Installation and Wiring
