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Products > Hydraulic valves > > MA-RZMO、MA-HZMO pilot proportional relief valve
Product name : MA-RZMO、MA-HZMO pilot proportional relief valve
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Details:
MA-RZMO、MA-HZMO pilot proportional relief valve

Diameter 6 pressure to 315bar flow to 40L /min

                                                                                                                                      Ma-rzmo-a schematic diagram

Ma-rzmo-aes-030 plate type proportional overflow valve

Ma-hzmo-a-030 superimposed proportional overflow valve
1.Main valve body 2. Main valve core 3. Flow control plug-in 4. Proportional overflow guide valve 5. Proportional electromagnet 6. Integrated digital amplifier
1. Overview of proportional valve products
 
MA-RZMO, MA-HZMO pilot proportional overflow valve control guide valve is a cone valve - type structure, the main valve is a sliding valve - type structure. This kind of proportional valve has two structural forms: R- plate structure, H- superposition structure. The pressure of the valve is proportional to the input electrical signal. This kind of valve work is through the electronic amplifier () to provide a proportional electromagnet (5) drive current, to calibrate the adjustment of the valve, the valve pressure and the amplifier input signal is proportional.
 
 
The structure of the valve work description: system pressure by the main spool (2) control, and (2) by the pilot proportional overflow valve (4) direct control. That is, through the proportional overflow guide valve to change the pressure difference between the two ends of the main valve core, let the main valve core to change the area of the overflow port, so as to achieve pressure regulation. The stack flow control plug - in ensures that the pilot control oil flow is constant, thus ensuring the stability of pressure regulation.
 
 
This valve is equipped with an internal pressure sensor and amplifier, which can realize the pressure closed-loop control inside the valve. Because the hysteresis and linear error of the valve are greatly reduced, it has better dynamic characteristics.

2. Selection table of proportional overflow valve:
MA- RZMO A PS 010 15 UO *

Model

proportional relief valve 6 size A= For open loop control

Communication interface (for rail type digital amplifier only)

PS=RS232 Serial interface

010=P port adjust,

T Unloading port

Maximum pressure range: UO- The input signal 0~10V Blank= Petroleum based hydraulic fluid
AES= Same as A. with integrated digital amplifier

50=50bar

I= Input current signal 4-20mA
100=100bar WG= Water glycol

TERS=With built-in pressure sensor and integration I= Input current signal 4-20mA

Type a digital amplifier
210=210bar 以下仅对 -TERS type valve
315=315bar F-The fault signal PE= Phosphate ester
  Q= Band enable signal


3 proportional relief valve performance data (ambient temperature - 20 ℃ ~ 60 ℃)
 

MA-RZMO-A MA-RZMO-AES                                                        MA-RZMO-TERS

Max adjust pressure bar

50

100

210

315

100

210

315

Min adjust pressure bar

2

3

3.5

4.5

3

3.5

4.5

P port max pressure bar

315

T port max pressure bar

210

Max flow( L/min )

4

Min flow( L/min )

0.3

Hysteresis (% of maximum regulated pressure)

≤ 1.7

≤ 0.2

Repeat accuracy (% of maximum regulated pressure)

≤ 2.5

≤ 0.5

The response when the signal changes from 0 to 100%

 

 

Time (subject to test conditions)

≤ 70ms

 

≤ 55 ms

Amplifier type and plug

E400(see pages 119-122 for details) E200(see pages 105-110 for details)

Amplifier power supply

24VDC 

 MA-RZMO-A mounting dimensions:

Installation interface size in accordance with iso4401-ab-03-4 standard, 6 diameter
Firm screws: 4 M5*50 hexagon socket, class 12.9
Oil port diameter: P,T=5.5mm (maximum)


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