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Products > Hydraulic valves > > MA-RZMO-APS0101560 direct acting proportional relief valve
Product name : MA-RZMO-APS0101560 direct acting proportional relief valve
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Details:
 MA-RZMO-APS0101560 direct acting proportional relief valve

1. Body 2. Cone seat 3. Spring 4. Cone spool
1. Overview of proportional valve products
 
MA-RZMO is a direct - acting cone - core proportional overflow valve. The pressure of the valve is proportional to the input electrical signal. This kind of valve work principle is through the electronic amplifier to provide proportional electromagnet drive current, the proportional electromagnet produced by the thrust to push the cone valve core () in the cone valve seat () of the hole, and the oil pressure balance in the cone valve seat () hole. The regulating pressure of the valve is proportional to the input signal of the amplifier.
 
The valve can be equipped with a pressure sensor and a digital integrated amplifier in addition to the open-loop pressure control. Because the hysteresis and linear error of the valve are greatly reduced, it has better dynamic characteristics. This open-loop or closed-loop valve is used primarily as a pressure guide valve.

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

Model

proportional relief valve size 6 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 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 just for -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 ℃)

 Hydraulic symbols:

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) E200(see pages 105-110)

Amplifier power supply

24VDC 


4. VTOZ proportional valve working curve (oil temperature 45 ℃, 46 # anti-wear hydraulic oil)

 

4.1. Flow regulation curve

Pressure adjustment curve was measured at flow Q=1L/min. Note: the back pressure of T port will affect the pressure adjustment

1. MA - RZMO - A MA - RZMO - AES 2. MA - RZMO - TERS

This proportional valve work curve :


4.2 pressure/flow curve
Under the condition of flow Q=1L/min, make the input signal change and measure:
3. MA - RZMO - A MA - RZMO - AES 4. MA - RZMO - TERS

4.3 minimum pressure flow curve measured at "0" input signal:
 
 
5. MA - RZMO - * - 010/50 6. MA - RZMO - * - 010/100 7. MA - RZMO - * - 010/210, 8. MA - RZMO - * - 010/315

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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