Toshiba PROSEC T1 T1S, 6F3B0250 user manual Control block diagram, Algorithm

6F3B0250

7. Instructions

Control block diagram

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

Integral control

Integral
1
TI×s	DIn

		Proportional					+
	en		1		DPn	+
Gap									KP
							-
			Derivative
				TD×s	DDn
				1+h×TD×s
				(h = 0.1)
								PVC
		1

1+T×s

Digtal filter

			MVn
D	MVn							MVCn
			MVS		H/L		DMV			MV
			MMV
						DMMV
									Manual
					Differential limit
									mode
		MVS:		Velocity ® Position
				MVn = MVn-1± DMVn
		H/L:		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:	®		- DMvn
In Direct mode, MV increases when PV is increased.		MVn = MVn-1
In Reverse mode, MV decreases when PV is increased.	®	MVn = MVn-1	+ DMVn
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

238 T1/T1S User’s Manual

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