Appendix H: OM4 Output Module for
SiteSentinel
®
iSite
Part # 20-8312-iSite
The OM4 Output Module (see image on right) expands your
SiteSentinel® iSite
capabilities by allowing you to connect as many as
16-relay activated output devices to the SiteSentinel® iSite
controller.
The OM4 Output Module communicates with the controller via Petro-
Net™. Up to four OM4 Output Modules can be connected for a total of
16 output devices. A common Output Module application is to turn off
a submersible pump when low product is detected in the tank. Or, use
it to activate an audible alarm when high product is detected in a tank.
Unlike the physically similar OM4 used on the SiteSentinel® 1, the
OM4 for the SiteSentinel® iSite
derives its power from a 12 VAC wall
pack source that is supplied with the unit. Follow wiring instructions
inside the unit for the correct Petro- Net™ communications and power
wiring connection instructions.
See your SiteSentinel® iSite
Configuration Manual to program the
alarms or events and to associate them with the Output Module
relays.
OM4 Output Module
DO NOT connect the OM4 Output Module directly to a submersible
pump! The OM4 output Module controls pumps INDIRECTLY, through
relays or contactors. High voltages exist inside the OM4 Output Module.
Only qualified technicians should open the unit. Before working on the
OM4 Output Module, disconnect all power, including power to and from
the relays. Output relays in the OM4 Output Module are not intrinsically
safe! DO NOT place probe and/or sensor wiring in conduit that contains
wiring for devices connected to the OM4 Output Module.
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