Created on 04/05/2017

 2017 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 3

MODEL

RBAN

Electro-proportional relief valve - pilot capacity, high pressure setting with no

command

SERIES P / CAPACITY: 1 L/min. / CAVITY: T-8A

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

This 2-port, pilot-stage, direct-acting relief cartridge is an electro-proportionally controlled, normally-closed pressure

regulating valve. The valve is spring biased closed to its highest setting (customer specified). Increasing current to

the coil will proportionally decrease the pressure setting. When the pressure at port 1 (inlet) is sufficient to

overcome the spring force minus the solenoid force, as determined by the analog input signal, the poppet lifts and

allows flow from port 1 to port 2 (outlet). This pilot control cartridge utilizes the T-8A cavity so it can be used in

conjunction with Sun's main stage, pressure control elements.

TECHNICAL DATA

Cavity T-8A

Series P

Capacity 1 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at Reseat 25 cc/min.

Reseat >85% of setting

Solenoid Tube Diameter 19 mm

Valve Hex Size 22,2 mm

Valve Installation Torque 27 - 33 Nm

Model Weight (with coil) 0,45 kg

Seal kit - Cartridge Buna: 990208007

Seal kit - Cartridge Viton: 990208006

Seal and nut kit - Coil Viton: 990770006

Model Weight 0.30 kg.

PROPORTIONAL PERFORMANCE DATA

Hysteresis (with dither) <4%

Hysteresis with DC input <8%

Linearity (with dither) <2%

Repeatability (with dither) <2%

Recommended dither frequency 140 Hz

snhy.com/

RBAN

Model Code Example: RBANXANCONFIGURATION OPTIONS

Created on 04/05/2017

 2017 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 3

(X)CONTROL

X No Manual Override

(A)ADJUSTMENT RANGE

A 3000 - 1500 psi (105 - 210 bar)

B 1500 - 800 psi (55 - 105 bar)

D 800 - 300 psi (20 - 55 bar)

W 5000 - 3000 psi (210 - 350 bar)

(N)SEAL MATERIAL

N Buna-N

V Viton

COIL *

No coil

212 DIN 43650-Form A, 12 VDC

224 DIN 43650-Form A, 24 VDC

712 Twin Lead, 12 VDC

724 Twin Lead, 24 VDC

912 Deutsch DT04-2P, 12 VDC

924 Deutsch DT04-2P, 24 VDC

* Additional coil options are available

TECHNICAL FEATURES

Customer must specify a relief setting that falls within the selected pressure range. This setting represents the maximum relief pressure which the valve will default

to with no command. As the command increases, the relief setting will decrease. See performance curves for selected pressure range. This setting is not adjustable

in the field.

Varying the analog input signal to the proportional solenoid provides a step-less control of pressure.

This electro-proportional cartridge utilizes the Sun T-8A, 2-port cavity making it the ideal choice to use in conjunction with Sun's main stage cartridges. Separate pilot

lines are eliminated and only one cavity needs to be machined to accommodate both the control and primary function. Note: All 2-port pilot stage control cartridges

utilize the same cavity and are physically interchangeable. Functionality is the only consideration.

High pilot capacity allows for operation of larger size main stage elements.

Note: The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required

torque value.

Damped construction provides stable operation over a wide range of operating conditions.

Low leakage levels in the closed position. (Reseat occurs at 85% of cracking pressure.)

Coils are interchangeable with Sun's other full flow, solenoid operated valves and can be mounted on the tube in either direction.

For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.

Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge

machining variations.

PERFORMANCE CURVES

Created on 04/05/2017

 2017 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 3 of 3