46 ER3000 User Manual
22 ID_OUTER_INTEGRAL_MAXIMUM - This is the maximum value
allowed for the integral sum on the outer loop.
23 ID_OUTER_INTEGRAL_SUM - This is the value of the integral sum for
the outer loop. It is formed by multiplying the integral constant time the
error and summing the result with the previous value for the integral sum.
67 ID_OUTER_INTEGRAL_DEADBAND - This is the outer loop minimum
error required for the integral sum to be changing in value. Often it is set to
zero and has no effect. However, if it is desirable to stop integrating once the
error is reduced below a certain value, for instance when using an external
dome-loaded regulator which has hysteresis, then this parameter should be
set to the minimum acceptable error.
9.5 Analog Input Variables
1 ID_AD_SETPOINT - This is the value of the analog s
etpoint. A value
of 400 is 0% and 3700 is 100%. Note that the analog setpoint is not
used unless the controller is programmed to use it (see variable #43).
5 ID_COMPENSATED_EXTERNAL_SENSOR - This is the
compensated external sensor value, i.e. - after linearization, zero and
span have been applied to the raw signal. A value of 400 is 0% and
3700 is 100%.
77 ID_COMPENSATED_EXTRA_AD1 - This input is available only on
certain models, refer to section 3. This is the compensated external
analog input value, i.e. - after linearization has been applied to the raw
signal.
78 ID_COMPENSATED_EXTRA_AD2 - This input is available only on
certain models, refer to section 3. This is the compensated external
analog input value, i.e. - after linearization has been applied to the raw
signal.
85 ID_AD_EXTRA1_TOGGLE - This variable is used to adjust the level
that the ER3000 interprets the ID_COMPENSATED_EXTRA_AD1
variable as a logical 0 or a logical 1.
86 ID_AD_EXTRA2_TOGGLE - This variable is used to adjust the level
that the ER3000 interprets the ID_COMPENSATED_EXTRA_AD2
variable as a logical 0 or a logical 1.
9.6 Pressure Profile Control Variables
69 ID_PROFILE_TYPE - This is the type of the profile
step currently active.
0 => STOP
1 => RAMP
2 => STEP
3 => DWELL
4 => DIGITAL OUTPUT
5 => DIGITAL INPUT
6 => LOOP
7 => CHANGE VARIABLE
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