User Guide - Eurotherm Ltda

More documents

Recommendations

Info

nanodac RECORDER/CONTROLLER: USER GUIDE4.6 LOOP OPTION CONFIGURATIONThis configuration area allows the user to set up two control loops. This description refers to temperaturecontrol loops, but the configuration parameters apply equally to other types of control. For each loop, channel1 is assumed to be a heating channel; channel 2 a cooling channel.The configuration is divided into a number of areas, as shown in the overview below.LoopN N = 1 or 2Main(Section 4.6.1)Auto/ManualPVInhibitTarget SetpointWorking SetpointWorking OutputIntegral HoldSetup(Section 4.6.2)Loop nameCh1 ControlCh2 ControlControl actionPB UnitsDeriv TypeSetpoint AccessAuto/Man AccessMan.Out AccessTune(Section 4.6.3Tune EnableLow OutputHigh OutputStateStage TimePID(Section 4.6.4)Sched TypeNo. of setsRemote i/pActive setBoundary 1-2Boundary 2-3PBTiTdCBHCBLMRLBTOutput LowOutput HighSetpoint(Section 4.6.5)Range LowRange HighSP SelectSP1SP2SP Low LimitSP High LimitAlt SP EnableAlt SPRateRate DoneSP rate disableServo to PVSP TrimSP Trim LowSP Trim HighManual TrackSetpoint TrackTrack PVTrack ValueSP Int BalanceOutput(Section 4.6.6)Output LowOutput HighCh1/2 OutputCh2 DeadbandCh1/2 OnOff HystCh1/2 Travel timeNudge raiseNudge lowerCh1/2 pot posCh1/2 pot brkPot Brk modeRateSbrkModeSbrk OPSafe OPManual ModeManual OutputForced OutputManual StartupPff EnPower InCool typeFF type/gainFF offset/trim linFF OPTrack OutputTrack EnableRem. Output LowRem. Output HighDiagnostics(Section 4.6.7)ErrorTarget OutputWorking Out LowWorking Out HighLoop BreakProp OutputIntegral OutputDeriv OutputSensor BreakSched PBSched TiSched TdSched CBHSched CBLSched MRSched Loop BreakSched Out LowSched Out HighFigure 4.6 Loop configuration overviewFor a general discussion of control loops, please see Appendix B to this manual.Page 98HA030554Issue 7 Nov 12
nanodac RECORDER/CONTROLLER: USER GUIDE4.6.1 Main menu parametersAuto/Manual Selects Auto(matic) or Manual operation. ‘Auto’ automatically controls output power ina closed loop configuration. In manual mode, the operator controls the output power.PVThe Process Variable input value. The value can be entered by the user, but is most often‘wired’ from an analogue input.InhibitSelect ‘No’ or ‘Yes’. ‘Yes’ stops the loop and sets the output to a ‘safe’ value, this valuebeing entered as a part of the Output configuration (Section 4.6.6). If an output ratelimit is set, then the output ramps to the safe level at that rate, otherwise it performs astep change. If setpoint or manual tracking is enabled (in setpoint configuration Section4.6.5), Inhibit overrides tracking.If ‘No’ is selected, the loop operates normally.Inhibit can be enabled/disabled from an external source.Target Setpoint The value at which the control loop is aiming. SP may be derived from a number ofsources, as described in Appendix B, section B2.5. The value range limited by the setpointlimits (SP High Limit and SP Low Limit) described in Section 4.6.5.Working Setpoint A read-only value displaying the current value of setpoint being used by the loop. Thismight or might not be the Target setpoint. The value may come from a number ofsources, but is limited by the setpoint limits (SP High Lim and SP Low Lim) described inSection 4.6.5.Working Output The actual working output value before being split into channel 1 and 2 outputs.Integral Hold Select ‘Yes’ or ‘No’. ‘Yes’ freezes the integral term at its current value. IntHold ensuresthat the power is reapplied smoothly after the loop has been broken for service reasons,for example.4.6.2 Setup menu parametersLoop Name Allows entry of an 11 character name for the loop.Ch1 Control Selects the type of control for channel one from:Off: Channel is turned offOnOff: Channel uses on/off controlPID: Proportional + integral + derivative (three-term) control.VPU: Valve positioning unboundedVPB: Valve positioning bounded.Appendix B, Section B2.2 provides more details.Ch2 Control As above, but for loop channel two.Control Action Select ‘Reverse’ or ‘Direct’.‘Reverse’ means that the output is ‘on’ when the process value (PV) is below the targetsetpoint (SP). This is normal for heating control.‘Direct’ means that the output is on when PV is above SP. This is normal for cooling control.PB Units * Select ‘Engineering’ or ‘Percent’.‘Engineering’ displays values in (for example) temperature units (e.g. °C or °F).‘Percent’ displays values as a percentage of loop span (Range Hi - Range Lo).Deriv Type * ‘Error’ means that changes to PV or SP cause changes to the derivative output. Derivativeon error should be used with a programmer since it tends to reduce ramp overshoot.‘Error’ provides rapid response to small setpoint changes which makes it idealfor temperature control systems.‘PV’ means that changes in PV alone cause changes to the derivative output. Typicallyused for process systems using valve control, as it reduces wear on the valve mechanics.Setpoint Access Allows setpoint editing permission in the loop display pages (Section 3.4.7).‘Read/Write’ allows free access to all users‘Read Only’ allows editing only in Configuration or Supervisor modes.‘Operator R/W’ allows editing in all modes except ‘Logged out’.HA030554Issue 7 Nov 12Page 99
Page 1 and 2:
nanodacUser Guidenanodac recorder/c
Page 3:
Declaration of ConformityManufactur
Page 6 and 7:
nanodac RECORDER/CONTROLLER: USER G
Page 8 and 9:
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58:
Page 62 and 63: nanodac RECORDER/CONTROLLER: USER G
Page 160 and 161:
Page 162 and 163:
Page 164 and 165:
Page 166 and 167:
Page 168 and 169:
Page 170 and 171:
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
Page 196 and 197:
Page 198 and 199:
Page 200 and 201:
Page 202 and 203:
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
Page 210 and 211:
Page 212 and 213:
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Page 220 and 221:
Page 222 and 223:
Page 224 and 225:
Page 226 and 227:
Page 228 and 229:
Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
Page 240 and 241:
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250 and 251:
Page 252 and 253:
Page 254 and 255:
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Page 264 and 265:
Page 266 and 267:
Page 268 and 269:
Page 270 and 271:
Page 272 and 273:
Page 274 and 275:
Page 276 and 277:
Page 278 and 279:
Page 280 and 281:
Page 282 and 283:
Page 284 and 285:
Page 286 and 287:
Page 288 and 289:
Page 290 and 291:
Page 292 and 293:
Page 294 and 295:
Page 296 and 297:
Page 298 and 299:
Page 300 and 301:
Page 302 and 303:
Page 304 and 305:
Page 306 and 307:
Page 308 and 309:
Page 310 and 311:
Page 312 and 313:
Page 314 and 315:
Page 316 and 317:
Page 318 and 319:
Page 320 and 321:
Page 322 and 323:
Page 324 and 325:
Page 326 and 327:
Page 328 and 329:
Page 330 and 331:
Page 332 and 333:
Page 334 and 335:
Page 336 and 337:
Page 338 and 339:
Page 340 and 341:
Page 342 and 343:
Page 344 and 345:
Page 346 and 347:
Page 348 and 349:
NANODAC RECORDER/CONTROLLER: USER G
Page 350 and 351:
Page 352 and 353:
Page 354 and 355:
Page 356 and 357:
Page 358 and 359:
Page 360 and 361:
Page 362 and 363:
Page 364 and 365:
Page 366 and 367:
Page 368 and 369:
Page 370 and 371:
Page 372 and 373:
Page 374 and 375:
Page 376 and 377:
Page 378 and 379:
Page 380 and 381:
Page 382 and 383:
Page 384 and 385:
Page 386 and 387:
Page 388 and 389:
Page 390 and 391:
Page 392:
show all

User Guide - Eurotherm Ltda

Create successful ePaper yourself

Delete template?

Save as template?