10.034.11 Pressure sensing system4-145 Siemens AG, 2003. All rights reservedSINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition4.11 Pressure sensing system5550 PRESSURE_SENS_A_REF Cross reference: -Reference value of pressure sensor A at 10 V Related to:HLAProtection level:3/3Unit:barDefault:200.0Minimum:50.0Maximum:400.0Data type:FLOATActive:Immediately5552 PRESSURE_SENS_B_REF Cross reference: -Reference value of pressure sensor B at 10 V Related to:HLAProtection level:3/3Unit:barDefault:200.0Minimum:50.0Maximum:400.0Data type:FLOATActive:ImmediatelyIn MD 5550: PRESSURE_SENS_A_REF and MD 5552:PRESSURE_SENS_B_REF, the pressure at which the pressure sensor outputs10 V at the A and B ends of the cylinder is entered in bar.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 reference: -Offset adjustment for pressure sensor A Related to:HLAProtection level:3/3Unit:-Default:0Minimum:-32760Maximum:32760Data type:WORDActive:Immediately5553 PRESSURE_SENS_B_OFFS Cross reference: -Offset adjustment for pressure sensor B Related to:HLAProtection level:3/3Unit:-Default:0Minimum:-32760Maximum:32760Data type:WORDActive:ImmediatelyBits set to 1 in MD 5551: PRESSURE_SENS_A_OFFS and MD 5553:PRESSURE_SENS_B_OFFS, the pressure sensor offset at the A or B endof the cylinder is adjusted in ADC increments.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 Subsection 3.9.2.Sensor adjustmentOffset adjustment4 Firmware Drive Functions
