Wiring - Omega DPU91-BC SERIES User Manual

8. Wiring

System Start-up: Step 2
Wire the transmitter connections with the power off. Keep any 4 to 20 mA and
relay-actuated output devices that are connected to it offl ine at this time.
Wire the sensor (pg. 7), power (pg. 8) and Open Collector and relay(s) (pg. 9).
Wiring Tips:
• Do not route the sensor or DC power cables in conduit containing
AC power wiring. Electrical noise may interfere with sensor signal.
• Routing the sensor cable in grounded metal conduit can help
prevent electrical noise and mechanical damage.
• Seal the cable entry points to prevent moisture damage.
• Only one wire should be inserted into a terminal.
• Splice double wires outside the terminal or use appropriate wire
ferrule, not to exceed 2 mm (0.08 in) diameter.
All wiring connections to the DPU91-BC are made via removable terminal plugs.
In general:
• Terminals accept 12 to 24 AWG wire.
• Strip 7 mm (0.28 in.) of insulation from wire tips
and tin bare ends to eliminate fraying.
• Insert wire tip or ferrule completely into the terminal
and secure with the screw.
• Do not allow any AC leads that may be connected
to the internal relays to come in contact with low voltage wiring.
• Minimize handling of plug-in modules to reduce the
• Handle modules by the edges. Never touch any
• Wear an anti-static wristband or stand on an anti-
8 OMEGA DPU91-BC Batch Controller System
DO NOT bundle Relay Module
wiring with other wiring.
Doing so may cause injury and/or damage to
DPU91P Transmitter, Relay Module, and Batch Module.
Avoid Electrostatic Discharge (ESD)
possibility of damage due to ESD.
exposed circuitry or contacts.
static mat, or keep one hand touching a properly
grounded pipe or other properly grounded piece of
metal when handling modules.
Next step: System Setup (Step 3).
CAUTION:
CAUTION:
Tools Required
• Phillips
screwdriver
• Flat-head
screwdriver
• Wire strippers