Siemens FIDAMAT 6, Руководство по эксплуатации, Страница: 97 / 202

Functions
8.5 Parameters
FIDAMAT 6
Operating Instructions, 01/2019, A5E00222135-04
95
hand, but becomes ineffective immediately when the measured value exceeds the effective
interval. In this case, the outer time constant "ta" attenuates the measured value.
You can parameterize values up to 100% for the effective interval, and values up to 300 s for
the time constants "ti" and "ta". By cleverly combining these three parameters, you can
achieve a low display delay (90% time) despite high noise suppression.
The effect on the set attenuation parameters can be observed in the bottom line. The "live"
measured value is displayed here.
8.5.3 Limits (function 51)
Figure 8-26 Limits
The device monitors up to four limits for every measured component, and these limits can be
assigned to the measuring ranges as desired. Any relay can be assigned to each limit with
function 71.
You can only configure positive limits up to 100%.
"Alarms at decrease signal":
Here you select whether a limit alarm is to be switched if the entered limit is exceeded or
fallen below.
"Applies to MR…":
Here, you assign the limit to the desired measuring ranges by pressing the third softkey
several times. When you do so, pointers move over the measuring range numbers and
indicate the measuring ranges within which the limit monitoring is to be active. In the above
example, this is measuring range 3.
"Limit alarm on/off":
The limit monitoring of each single limit can be switched off individually using function 52.
The response of a limit relay is registered in the logbook (function 3). As soon as the cause
of the limit alarm has been eliminated, the limit relay is reset automatically.
You can change to the next limit using the fifth softkey (
"Limit…"
).