Parameter Declaration Data Type Description
PULSE_TM INPUT REAL MINIMUM PULSE TIME
n A minimum pulse time can be set with the
PULSE_TM parameter.
n Default: 0.1s
n Range of Values: ³ 0.0 s
BREAK_TM INPUT REAL MINIMUM BREAK TIME
n A minimum break time can be set with the
BREAK_TM parameter.
n 0.1s
n Range of Values: ³ 0.0 s
PER_MODE INPUT INT PERIPHERIE MODE
n You can enter the type of the I/O module at this
switch. The process variable at input PV_PER is
then normalized to °C at the PV output.
– PER_MODE = 0: standard
– PER_MODE = 1: climate
– PER_MODE = 2: current/voltage
n Default: 0
n Range of Values: 0, 1, 2
PVPER_ON INPUT BOOL PROCESS VARIABLE PERIPHERY ON
n If you want the process variable to be read in from
the I/O, the PV_PER input must be connected to
the I/O and the PVPER_ON input must be set.
n Default: FALSE
n The functionality is based on the PI control algorithm of the sampling controller. This
is supplemented by the functions for generating the binary output signal from the
analog actuating signal.
n You can also use the controller in a cascade control as a secondary position con-
troller. You specify the actuator position via the setpoint input SP_INT. In this case,
you must set the process value input and the parameter TI (integral time) to zero. An
application might be, for example, temperature control with heating power control
using pulse-break activation and cooling control using a butterfly valve. To close the
valve completely, the manipulated variable (ER * GAIN) should be negative.
n Apart from the functions in the process variable branch, FB 59 TCONT_S implements
a complete PI controller with binary manipulated value output and the option of influ-
encing the controller output signals manually. The step controller operates without a
position feedback signal.
The values in the controller blocks are only calculated correctly if the
block is called at regular intervals. Therefore, you have to call the con-
troller blocks in a cyclic interrupt OB (OB 30 ... 38) at regular intervals.
The sampling time is predefined on the parameter CYCLE.
Block Diagram
Application
Forming the Error
VIPA SPEED7
Standard
PID Control > FB 59 - TCONT_S - Temperature Step Control
HB00 | OPL_SP7 | Operation list | en | 18-30 874
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