12. Programming using the programming menus
12.4.3 Limit Value Responses
Relay assignment
For reporting alarms in the event of a limit value
being exceeded alarm relay cables or new V6
relay adapters are used. These relays can be
configured individually - as total alarm or sepa-
rately as maximum / minimum alarm - or they
can have individual limit values assigned to
them.
If disturbances need to be selectively detected
and evaluated, one can simply specify the limit
values in the wizard menu
Limit value alarm
and assign these to individual relays; (see Man-
ual 6.10.8). It is also possible to have a number of limit values assigned to the
same relay. If the relay adapter is connected the corresponding relay will auto-
matically be set to variant 2 (Assigned internally). If not, it must be configured
to this variant later.
Or alternatively in the programming menu
Special functions
there are the func-
tions
Action - Max
,
Action - Min
:
To activate relay "xx" in the event of overshooting limit value maximum :
7 ac-
tion, maximum :
-----
xx
To activate relay "yy" in the event of undershooting limit value minimum :
7 ac-
tion, maximum :
-----
yy
To clear relay assignment press
<CLEAR>
The relays can be configured in menu
Output modules
:
To set port 20, socket A2
Port: 20
Socket: A2
a normally open semiconductor relay
Relay : NO, 0.5 A
to variant 2 (relay assigned internally)
2 : Assigned internally
Controlling a measuring operation
The exceeding of a limit value can be used not only for reporting an alarm but
also for controlling a measuring operation (see Manual 6.6.3). Commands can
be assigned to a limit value by means of the functions :
Action, maximum
and
Action, minimum
Rxx code
Start meas. operation at limit value, max:
7 Action, max:
Start
--
S
Stop meas. operation at limit value, min:
7 Action, min:
Stop
--
E
Manual inquiry at limit value, maximum :
7 Action, max:
Manu
--
M
Zero-set timer 0.1s at limit value, max:
7 Action, max:
TZero
--
T
Execute macro 5...9 at limit value, max:
7 Action, max:
Mak 5
--
5
To clear action press
<CLR>
72 ALMEMO
®
5690-2M
LIMITS, ALARM
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Select measuring channel:
M0: 216.7 °C
7 Limit max: 300.0 °C
Relay: 0
7 Limit min: 100.0 °C
Relay: 1
Output socket: A2
Use alarm cable, set variant
EA Trigger-Alarm
2: Rx int. assigned
Relay: 01------
M PRINT ESC