Siemens Pacemaker UM344-2 Manual de usuario descargar pdf (Pagina 162)

APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2

September 1995

is in MANUAL, the output is the manual (M) value (-1.0 to 110%). The manual value can be adjusted

with the pushbuttons of the XTC or from the CHANGE VALVE key of the MXC. When the manual (M)

value is not the function block output, it will track the output value of the controller function block.

The A/M transfer can be configured as AUTO only. When the Automatic Mode Only parameter is

selected as YES, the function block will remain in the AUTO position.

Configuration allows for selecting the A/M block power-up position (automatic, manual). When the

function block powers-up in manual, the value of M can be set in configuration from -1.0 to 110%.

The Power-Up Valve can only be changed by editing the parameter in this function block with the MXC

or by storing a new value via the pushbuttons of the XTC.

A.8 CONTROLLER BLOCK

The controller function block provides an extensive range of Proportional-Integral-Derivative functions

including: PID, PD and ID.

PID Controller

Controller .....................................................................On/Off

Controller Type....................................................... PID/PD/ID

Action...............................................................Reverse/Direct

Proportional Gain (PID & PD) ...............................0.01 to 100.0

Time-Integral.........................................0.01 to 1000 min/repeat

Time-Derivative.............................................. 0.01 to 100.0 min

Derivative Gain......................................................1.00 to 30.00

Manual Reset (PD only).......................................0.0 to 100.0%

Manual Reset Tracking (PD only)..................................No/Yes

The PID controller is a reset type controller which uses external feedback to establish the integral action.

The function block will force the output to track the feedback when the controller is in manual.

If the derivative time TD is set to 0.00, the derivative section is eliminated.

Equations

O = GE + R

AUTO R =

TIs + 1

TDs 1

O = ±PG [P(1+ ) - S] + [1+ ]

(TD/DG)s + 1 TIs

MANUAL R = F - GE ∴ O = F

Output

PID

PID Controller

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Siemens Pacemaker UM344-2 Manual de usuario Pagina 162