Proportional Amplifier

The Pro­por­tional Am­pli­fier serves as flow rate reg­u­la­tor for pro­por­tional valves. It is used in many hy­draulic ap­pli­ca­tions.



The mi­cro­con­troller-based cur­rent reg­u­la­tor pro­vides a con­stant out­put cur­rent pro­por­tional to the set point value 0 - 10 Volt or 0 - 20 mA. Fluc­tu­a­tions in sup­ply volt­age and tem­per­a­ture are com­pen­sated for which en­sures con­stant flow rates. To coun­ter­act stic­tion and hys­tere­sis ef­fects a dither fre­quency can be added (su­per­im­posed small rec­tan­gu­lar rip­ple fre­quency). Please refer to the sec­tion hous­ings and base plates for ad­di­tional hous­ing op­tions.

Application Examples

Application Examples
Con­struc­tion equip­ment
Farm­ing equip­ment
Mu­nic­i­pal ve­hi­cles
Spe­cialty ve­hi­cles
Ma­chine en­gi­neer­ing
In­dus­trial con­trol ap­pli­ca­tions

Technical data

Product Name Value
Op­er­at­ing tem­per­a­ture -40 °C to 85 °C
Op­er­at­ing volt­age 9 - 30 V
Qui­es­cent cur­rent 250 µA
Con­tin­u­ous cur­rent limit 3 A
En­vi­ron­men­tal pro­tec­tion IP53


Connection diagram

Product Details

Product Name Features Housing Order No.
Pro­por­tional am­pli­fier 9-30 V Vin Volt­age set­point w/o po­ten­tiome­ter S1/G2/E 1.​030.​310.​00E
Pro­por­tional am­pli­fier 9-30 V Iin Cur­rent set­point w/o po­ten­tiome­ter S1/G2/E 1.​030.​320.​00E
Pro­por­tional am­pli­fier 9-30 V Vin + Poti Volt­age set­point with po­ten­tiome­ter S1/G2/E 1.​030.​311.​00E
Pro­por­tional am­pli­fier 9-30 V Iin + Poti Cur­rent set­point with po­ten­tiome­ter S1/G2/E 1.​030.​321.​00E


Product Name Order No.
Pro­gram­ming tool MRS Re­al­izer I 1.​100.​000.​01
Flat pin socket 1.​017.​002.​00
FAS­TON ter­mi­nal 6.3 mm 1.5-2.5 mm2 103064
FAS­TON ter­mi­nal 6.3 mm 1 mm2 102355
FAS­TON ter­mi­nal 2.8 mm 0.5-1.0 mm2 105292
Hous­ing bracket 1.​017.​080.​00