Codes
Relay wiring is classified Class 1 wiring. Installations must be in
accordance with the National Electrical Code (NFPA No. 70) and the
Automotive and Marine Service Station Code (NFPA No. 30A). The
installer is responsible to investigate and follow any other applicable
local codes prevalent in the country\county of installation.
Hazardous Area Definition
A fuel dispenser is a hazardous area as defined in the National
Electrical Code. Do not mount the OM4 Output Module within a
hazardous area. Do not attach this unit to any devices that are located
in the hazardous area.
Connections
Connect all relay field wiring to the appropriate terminal block(s). See
figure on right.
I/O Module Terminal Outputs
When installing two or more OM4 Output Module boxes, place the
address jumpers on the OM4 circuit boards as shown below. To do
this, take off the four nuts securing the aluminum cover and remove it,
exposing the circuit board. Set the jumpers and replace the cover.
OM4 Module Jumper Settings
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