Toshiba PROSEC T3H user manual Control block diagram, Algorithm

Page 49

2. Expanded Functions

Control block diagram

						Auto
ASV						mode
				DSV
		Differential						SVn	+
		Differential						SVn	+
CSV									-
CSV									-

				Cascade
					mode

PVn

Integral control

Integral
1
TI⋅s	∆ In
	∆ In

Proportional

+

en

1

∆ Pn +

Gap

KP

-

Derivative

TD⋅s

∆ Dn

1+η⋅ TD⋅s

(η = 0.1)

PVC

1

1+T⋅s

Digtal filter

MVn

∆

M

Vn

MVCn

MVS

H/L

DMV

MV

MMV

DMMV

Manual

Differential limit

mode

MVS:

Velocity →

Position

H/L:

MVn = MVn-1± ∆ MVn

Upper / lower limit

DMV:

Differential limit

Integral action control:

When MV is limited (H/L, DMV) and the integral value has same sign as limit over, integral action is stopped.

Velocity → Position conversion:		MVn = MVn-1	- ∆ MVn
In Direct mode, MV increases when PV is increased.	→	MVn = MVn-1	- ∆ MVn
In Reverse mode, MV decreases when PV is increased.	→	MVn = MVn-1	+ ∆ MVn
Gap (dead-band) operation:
Error e

SV - PV

GP (%) GP (%)

Algorithm

Digital filter:

PVn = (1− FT⋅) PVC+ FT⋅ PVn − 1

Here,

0.000 ≤ FT≤ 0.999

User’s Manual 47

Image 49

Contents USER’S Manual Important Information Hazard Classifications General InformationWiring Safety Precautions InstallationOperation Maintenance Safety Label Terminology About This ManualT3 manuals VacContents Prosec T3H Section T3H Overview Introducing the T3H Differences between T3H and T3 Two types of T3H CPU modules are available T3H components CPU moduleMode control switch RAM/ROM switchStatus LEDs Programmer port Battery coverComputer link port IC memory card slotExpansion interface module CH1 CH2 T3H CPUCPU Rack Power supply moduleExpansion cable Following types of I/O modules are available O moduleModule internal current consumption Data transmission moduleTOSLINE-S20LP AsciiSFC Specifications Functional specificationsRAS Instruction execution speed Tenr TeorTest DtstRST SETTset TrstSIN PID2COS TANInstruction execution speed cont’d Shown below Section Expanded Functions System operation Auto-RUN / Standby selection Timer interrupt intervalSaving the sampling trace condition External I/O register Expanded registersAuxiliary register Link register TimerLink Global Special register File registerSEND/RECV Expanded FunctionsTOSLINE-S20 Expanded Functions Starting register Expanded file register data read MRADR S T Expanded file register data Write MWExpanded Functions TOSLINE-S20LP loop support Ethernet support Instructions Double-word multiplication and division D∗ Expanded Functions DSV Essential PID PID3Algorithm Control block diagramParameter details ASV ← ISV OperationExpanded Functions Floating point essential PID FPID3 Digital filter PVn = 1− FT⋅ PVC+ FT⋅ PVn − Here ≤ FT ASV differential limit DSV 0 to 100 %/∆ t Data range +1 ⋅C Expanded Functions Expanded data transfer Xfer Type Transfer parameter tableCPU register ↔ Expanded F register IC memory card CPU register ↔ S20/S20LP scan memory CPU register ↔ Eeprom D register When the data writing address range exceeds page boundary MID Network data send SendExpanded Functions S20LP T3H self-station RW100 RW101 RW227 Network data receive Recv Expanded Functions H0A Expanded Functions Prosec T3H Toshiba Corporation