Controller functions
RES-420
Page 37
The various hold modes are shown below:
The word "Hold" appears on the display if a tempera-
ture value is indicated in hold mode. It disappears for
approximately 100ms whenever the hold value is
updated.
10.13 Measuring impulse duration
(as of software revision 026)
The length of the measuring impulses generated by the
controller can be set with this parameter by means of
step 220 [26]. It may be necessary to set a measuring
impulse that is longer than the default 1.7ms for certain
applications (
ROPEX Application Report).
10.14 Automatic phase angle
compensation (AUTOCOMP)
(as of software revision 100)
It may be necessary to compensate the phase angle
displacement between the U
R
and I
R
measuring
signals in certain heatsealing applications (
ROPEX
Application Report). The "AUTOCOMP" function is pro-
vided for this purpose. It can be parameterized with
step 221 as followed:
1.
„OFF" (Factory setting)
The „AUTOCOMP“ function is deactivated.
2.
„ON“
The „AUTOCOMP“ function is activated by pressing
the "ENTER" key after the "AUTOCAL" function has
been successfully executed (
matic zero calibration (AUTOCAL)" on page 35).
The interval after the end of the "AUTOCAL" func-
tion must be less than 2.0s ("Start AUTOCOMP?
Start with ENTER" appears on the display during
this time). The subsequent "AUTOCOMP" function
is executed in approximately 2.0s ("- AUTOCOMP -
Please wait…" appears on the display during this
time).
If the interval following the successful execution of
the "AUTOCAL" function is longer than 2.0s, the dis-
play returns to the home position and the "AUTO-
COMP" function is not executed.The actual value
output is set to 0…3°C (i.e. approx. 0 VDC) when
the "AUTOCOMP" function is executed.
ACTUAL
temp.
START
signal
24VDC
T
t
t
0
0
Hold OFF
T
t
0
ACTUAL indication
Hold ON
T
t
0
Hold 2 s
T
t
0
Hold
Hold
Hold
Hold
End of
heating phase
2 s
2 s
Function
„ENTER“ key
pressed
„AC“
t
t
0
0
AUTOCAL
<2.0s
AUTOCOMP
„AP“
