Controller functions
Version 1
RES-402
Page 23
This meter moreover permits disturbances in the control loop (loose connections, contacting or wiring problems)
as well as any line disturbances to be observed extremely effectively and interpreted accordingly. The same
applies if mutual interference occurs between several neighboring control loops.
If an alarm is signaled, the voltage at this analog output jumps back and forth at approx. 1Hz
between 0VDC and 10VDC .
7.4
Automatic zero calibration (AUTOCAL)
Owing to the automatic zero calibration (AUTOCAL) function, there is no need to adjust the zero point manually
on the controller. This function matches the controller to the current and voltage signals that are present in the
system and calibrates it to a value of 20°C.
You should always wait for the heatsealing band and the bar to cool down (to ambient temperature)
before activating the "AUTOCAL" function.
The "AUTOCAL" function is activated by pressing the AUTOCAL button on the controller.
When using the controller RES-402/...VAC-
AC
the "AUTOCAL" function can be activated by means of a 24VDC
pulse at terminals 16+12 (CH1) too.
!
!
RES-402 AC
max. 6mA
16
12
AUTOCAL
+
-
GND
24VDC
AUTOCAL
0.1…5s
HIGH:
≥
12VDC
LOW:
≤
2VDC
13
