30 -
ATR121/141 - User manual
15
p. b.
Proportional band
Proportional band Process inertia in units (in °C if
temperature) 0 .. 999 | 0 .. 9999
0 = On/Off
Value degrees.tenths for temperature sensors and digit
4
for
linear sensors and potentiometers (
default
0)
16
t.i.
Integral time
Process inertia in seconds
0 .. 999 | 0 .. 9999 s (0 = integral disabled) (
default
0)
17
t. d.
Derivative time
Normally ¼ of integral time
0..999 | 0..9999 s (0 = derivative disabled) (
default
0)
18
t. c.
cycle time
Cycle time (for PID on remote control switch 10/15 sec, for
PID on SSR 1s) or servo time (value declared by servo-motor
manufacturer).
1 .. 300 s. Selecting 0 cycle time becomes 100ms (
default
10)
19
AL.
Alarm
Alarm intervention is related to SET2.
a. a
|
aL. a.
Absolute alarm, referring to process (th-
reshold alarm)
default
a. b
|
aL. b.
Band alarm
(par. 13)
a. d.s
|
aL. d.s
Upper deviation alarm
(par. 13)
a. d.i
|
aL. d.i
Lower deviation alarm
(par. 13)
a. a.s
|
aL. a.s.
Absolute alarm, referring to SET1
co o
|
co oL
Cooling action
(par. 9.6)
m. r.
|
m. r.
Absolute alarm with manual reset. After the
alarm activation, the output can be released
pressing
FNC
.
m. r. m
|
m. r. m.
Absolute alarm with manual reset and relay
status memory in case of power failure. Af-
ter the alarm activation, the output can be
released pressing
FNC
.
Summary of Contents for ATR 121
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