13
8012426/YWL2/3-0/2016-08| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100
Subject to change without notice
PRODUCT DESCRIPTION
2
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 64
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. 45 s measurement of zero value, control value and contamination of the optical
interfaces
The measuring time depends on the increase in contamination value (change > 0.5%
→
measurement is repeated up to 2 times).
●
Every 90 s (standard value), output of values determined (duration parameter can be
modified,
see “Determining the function check”, page 64
).
Fig. 3: Function check output on a plotter
Further information
→
Service Manual
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
●
The analog output must be activated to output control values on the analog output
(
see “Setting the analog outputs parameters”, page 65
).
●
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-
) and the green LED in the control window of the sender/receiver unit
flashes (
see “Sender/receiver unit”, page 16
●
A function check is not started automatically when the measuring system is in
“Maintenance” 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.