JUMO mTRON T Operating Manual page 137

Tol low, Tol high
Lower limit value and upper limit value
of the respective program channel and are used for monitoring an arbitrarily selectable actual value (x).
If the actual value is out of the tolerance band, the program is stopped until the actual value is
within the tolerance band again. Moreover the tolerance band signal of the program channel is
activated during tolerance band infringement. Alarm type (event, collective alarm), alarm level
(High, Low), and alarm suppression are configurable (configuration of the program generator).
If Tol low = 0 and Tol high = 0, the tolerance band monitoring is not active.
Program profile
The following diagrams show the progression of a setpoint value within a program section, if
"Step" or "Ramp" is specified for the setpoint input (generator configuration parameter).
w
w2
w1
S1 Program section 1
T1 Section time 1
The programmed setpoint value determines the setpoint value at the start of the relevant pro-
gram section.
If "Step" is specified for the setpoint input, the setpoint value remains constant in the program
section. It does not change until the next section that has been programmed with a different
setpoint value starts.
If "Ramp" is specified for the setpoint input and the next section has been programmed with a
different setpoint value, the setpoint value follows a ramp course within the program section.
The ramp slope is determined by the section time and the difference between the two setpoint
values.
(Tol low, Tol high)
w, x
S1
T 1
form a tolerance band for setpoint value 1 (w)
x
Tol high
w
Tol low
x
t
w
w2
w1
t
w1 Setpoint value in program section 1
w2 Setpoint value in program section 2
9 Program editor
S1
T1 t
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