1
Table 1 - 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-2XHE-20
20A Definite Purpose Contactor: 3.0 HP @ 208-240V.
ROC-2XHE-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
0.125 Amp
Littelfuse 0218.125P
Other
Dimensions
7” tall, 7” wide, 4”” deep. Nema 4X Polycarbonate Hinged Enclosure.
Weight
2.7 lb.
Environment
0-50°C, 10-90%RH (non-condensing)
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...
