4
Figure 2 - Controller Overview
Keypad
System ON/OFF,
Up Arrow
Down Arrow
Manual Run, Manual Flush
Supply Power
Connections
Motor
Connections
Terminal Board
CPU4 Board
Conductivity Probe
Connections
Display
(4 line, 20 character)
Clear, concise feedback
on the RO’s status.
Alarm
Display backlight
flashes along with
audible beeper to
indicate alarm condition.
Summary of Contents for NRO ROC-3HE
Page 1: ...Nelsen NRO ROC 3HE System Controller Documentation Systems with 3 hp Motors and Above...
Page 4: ...2 Figure 1 Simplified Schematic...
Page 5: ...3 Figure 1 1 Field Wiring Diagram...
Page 7: ...5 Typical Configuration Figure 3 Controller Detail CPU 4 Typical Configuration...
Page 8: ...6 Figure 4 Controller Detail Terminal Board TB 1 See Fig 1 for schematic...