Special functions
12.12 Special functions
On the 2590 measuring instrument, in the 2
SPECIAL FUNCTIONS
menus, all sensor parame-
ters can be accessed; these may be needed
only occasionally in routine operation but may
be very useful in many applications (see Manu-
al 6.10). Some of these functions are highly
complex and should only be used if you are fully
aware of how they work and what effect they
have.
These 2 special functions menus can be reached
after sensor programming by pressing key(s) :
< ►P >
... or
►
...
To return to the last menu - back as far as menu selection :
< P
◄
>
... or
◄
...
12.12.1 Print cycle factor
To adapt data recording to the speed of modification at individual measuring
points a print cycle factor can be programmed to between 00 and 99; this will
cause certain measuring points to be output less frequently or not at all (see
Manual 6.10.6). Only faulty measuring points, e.g. in the event of a limit value
being exceeded, will always be output. This print cycle factor is by default com-
pletely disabled or set to 01 for all measuring points; i.e. all activated measur-
ing points are output in each cycle. If some other factor e.g. 10 is entered the
measuring point in question will only be output every 10th cycle; if 00 is entered
it will not be output at all. With data saving similarly it is possible to suppress
measured values that are unnecessary and to thus save on memory capacity.
Enter print cycle factor (see 8.5) in function:
Print cycle factor : 01
To clear the print cycle factor press
<CLR>
12.12.2 Actions in the event of a limit value being exceeded
Relay assignment
Alarm reporting by default uses both limit values for all a device's measuring
points (see 12.5); i.e. if at any measuring point just one limit value is exceeded,
this will trigger any appropriately programmed relay connected via an alarm re-
lay cable or relay adapter (see Manual 5.2/3). This relay remains energized
until all measured values return to within the prescribed limit values by the
amount set as hysteresis. If no limit value has been set the measuring range
limit is used as limit value. A sensor breakage always triggers an alarm.
To ensure that disturbances can be reliably recognized and selectively evaluated
it is possible, in the functions
Action, maximum
and
Action, minimum
to assign
individual relays to specific limit values. A relay can be assigned more than one
limit value. For this purpose the relay cables offer 2 relays; the new relay adapter
(ZA 8006-RTA3) offers up to 10 relays. Variant 2 (assigned internally) must be
set as mode in the output module for the relay; (see 14.2, Manual 6.10.9).
ALMEMO
®
2590
55
* SPECIAL FUNCTIONS *
Connector : 0 Channel : 00
Print cycle factor :
01
7 Action, max :
Start R21
7 Action, min :
End R22
6 Analog start :
0.0 °C
6 Analog end :
300.0 °C
Mªª Pª M ©P
Summary of Contents for ALMEMO 2590-2
Page 74: ...17 Appendix 17 4 Your contact 74 ALMEMO 2590...
Page 75: ...Your contact ALMEMO 2590 75...
Page 76: ...17 Appendix 76 ALMEMO 2590...
