14
8011952/YWL2/3-0/2016-08| SICKOPERATING INSTRUCTIONS | DUSTHUNTER C200
Subject to change without notice
2 PRODUCT DESCRIPTION
2.1.3 Function check
A function check can be triggered at fixed intervals as from a definable starting timepoint
for an automatic function check of the measuring system. The setting can be made using
the SOPAS ET operating program (see “Determining the function check”, page 70). Any
unallowed deviations from normal behavior that may occur are signaled as errors. A
function check triggered manually can help localize possible error causes should a device
malfunction occur.
The function check comprises:
● Approx. 65 s measurement of contamination on optical interfaces, zero and control
value
The measuring time depends on the increase in contamination value (change > 0.5% →
measurement is repeated up to 2 times → measuring time increases).
● Every 90 s (standard value), output of values determined (duration parameter can be
modified, see “Determining the function check”, page 70).
Fig. 3: Function check output on a plotter
Further information → Service Manual
● The analog output must be activated to output control values on the analog output
(see “Setting the analog outputs parameters”, page 71).
● The value measured last is output on the analog output during control value determi-
nation.
● If the control values are not output on the analog output, the current measured value
is output when control value determination has completed.
● During a function check, relay 3 is activated (see “MCU processor board connec-
tions”, page 48) and the green LED in the control window of the sender/receiver unit
flashes (see “Sender/receiver unit”, page 18).
● A function check is not started automatically when the measuring system is in “Main-
tenance” mode.
● “Function control” is displayed on the LC-Display of the MCU control unit during the
function check.
● If the start timepoint or cycle interval are changed, a check cycle timed between
parameter setting and new start timepoint is still carried out.
● Changes to the interval time are first effective after the next start timepoint.
Contamination degree
(Live Zero = 0%,
20 mA = 40% *)
Function check
start
Zero value output (Live Zero)
Control value output
(70% value, span)
Contamination output
Control value
determination
Paper feed
Function check
end
*: 4% for activated EPA
mode
To Next Page
Loading...
