02.994-143 Siemens AG 2000. All rights reservedSINUMERIK 840D/SIMODRIVE 611 digital Descr. of Functions HLA Module (FBHLA) – 04.00 Edition4.11 Pressure sensors5550 PRESSURE_SENS_A_REF Cross ref.: –Reference value of pressure sensor A at 10 V Relevant for:HLAProtection level:3/3Unit:barDefault:200.0Minimum:50.0Maximum:400.0Data type:FLOATEffective:Immediately5552 PRESSURE_SENS_B_REF Cross ref.: –Reference value of pressure sensor B at 10 V Relevant for:HLAProtection level:3/3Unit:barDefault:200.0Minimum:50.0Maximum:400.0Data type:FLOATEffective:ImmediatelyThe pressure at which the pressure sensor at the A and B cylinder ends outputs10 V is entered in bar in MD 5550: PRESSURE_SENS_A_REF and MD 5552:PRESSURE_SENS_B_REF.The pressure sensor should have a range of 0 to 10 V, with 0 bar pressure rep-resented by 0 V and the reference value (MD 5550 or. MD 5552) by 10 V.5551 PRESSURE_SENS_A_OFFS Cross ref.: –Offset adjustment for pressure sensor A Relevant for:HLAProtection level:3/3Unit:–Default:0Minimum:–32760Maximum:32760Data type:WORDEffective:Immediately5553 PRESSURE_SENS_B_OFFS Cross ref.: –Offset adjustment for pressure sensor B Relevant for:HLAProtection level:3/3Unit:–Default:0Minimum:–32760Maximum:32760Data type:WORDEffective:ImmediatelyThe offset of the pressure sensor at the cylinder A and B ends is adjusted inADC increments in MD 5551: PRESSURE_SENS_A_OFFS and MD 5553:PRESSURE_SENS_B_OFFS.The pressure indicator should also display 0 bar at zero pressure. If thevelocity controller cycle is altered, the offset must be adjusted again.NoteFor automatic offset adjustment, see Section 3.9.2.Sensor adjustmentOffset adjustment4 Firmware Drive Functions4.11 Pressure sensors
