YASKAWA VIPA SPEED7 - Page 847

Parameters
Parameter Declaration Data Type Description
INV INPUT REAL INPUT VARIABLE
n An analog manipulated value is connected to the
input parameter INV.
n Default: 0.0
n Range of Values: -100.0...100.0 (%)
PER_TM INPUT TIME PERIOD TIME
n The constant period of pulse duration modulation is
input with the PER_TM input parameter. This corre-
sponds to the sampling time of the controller. The
ratio between the sampling time of the pulse gener-
ator and the sampling time of the controller deter-
mines the accuracy of the pulse duration modula-
tion.
n Default: T#1s
n Range of Values: ³ 20*CYCLE
P_B_TM INPUT TIME MINIMUM PULSE/BREAK TIME
n A minimum pulse or minimum break time can be
assigned at the input parameters P_B_TM.
n Default: T#50ms
n Range of Values: ³ CYCLE
RATIOFAC INPUT REAL RATIO FACTOR
n The input parameter RATIOFAC can be used to
change the ratio of the duration of negative to posi-
tive pulses. In a thermal process, this would, for
example, allow different time constants for heating
and cooling to be compensated (for example, in a
process with electrical heating and water cooling).
n Default: 1.0
n Range of Values: 0.1 ...10.0
STEP3_ON INPUT BOOL THREE STEP CONTROL ON
n The STEP3_ON input parameter activates this
mode. In three-step control, both output signals are
active.
n Default: TRUE
ST2BI_ON INPUT BOOL TWO STEP CONTROL FOR BIPOLAR MANIPU-
LATED VALUE RANGE ON
n With the input parameter ST2BI_ON you can select
between the modes "two-step control for bipolar
manipulated value" and "two-step control for
monopolar manipulated value range".
The parameter STEP3_ON = FALSE must be set.
n Default: FALSE
MAN_ON INPUT BOOL MANUAL MODE ON
n By setting the input parameter MAN_ON, the
output signals can be set manually.
n Default: FALSE
VIPA SPEED7
Standard
PID Control > FB 43 - PULSGEN - Pulse generation
HB00 | OPL_SP7 | Operation list | en | 18-30 847