ROC-3HE RO Controller
08508-HW-ADV-0508
Overview
The ROC-3HE RO Controller is a compact and robust solution designed for large single-phase reverse osmosis systems. It provides precise monitoring of permeate TDS, feed TDS, and percent rejection, ensuring consistent water quality while supporting full programmability and extensive flush options for optimal system performance.
Specifications
Inputs Tank level switches (2) Normally-Closed. Can be used with a single level switch.
Inlet pressure switch Normally-Open.
Pretreat lockout switch Normally-Open.
High Pressure switch Normally-Open.
Controller Power 100-240 VAC, 60/50Hz (Switching power supply automatically adjusts)
Permeate Conductivity 0-3000 PPM, 0-6000 µs (standard sensor, CP-1, K=.75)
Feed Conductivity (opt) 0-3000 PPM, 0-6000 µs (standard sensor, CP-1, K=.75)
Output Relay Ratings (relays are fused with a 6A fuse)
Feed Solenoid 0.5A. Voltage is the same as motor/supply voltage.
Flush Solenoid 0.5A. Voltage is the same as motor/supply voltage.
Motor Contactor Coil 0.5A. Voltage is the same as motor/supply voltage.
Motor Contactor
ROC-3HE-20 20A Definite Purpose Contactor: 3.0 HP @ 208-240V.
ROC-3HE-40 40A Definite Purpose Contactor: 5.0 HP @ 208-240V
Circuit Protection
Main/Relay Power Fuse F1 5x20mm 6 Amp Littelfuse 0234006P
Power Supply/CPU Fuse F2 5x20mm 0.25 Amp Littelfuse 0218.250P
The ROC-3HE can power motors up to 5 HP at 240 VAC and includes a rugged 40A contactor for extended life. It is also available as a UL-listed industrial control panel and supports low-cost custom graphics, offering a reliable, flexible, and professional solution for demanding RO applications.