Settings
Instruction Manual FireGuard 2
13542E/5
49
8.2
Configuring the limits
8.2.1
General information on setting the limits
The monitoring mode of the FireGuard 2 is defined by the settings of the limit function. The
following parameters can be monitored:
▪
Turbidity limit
▪
Limit for turbidity gradient (
→
Section 8.2.6)
▪
Temperature limit
▪
Limit for temperature gradient (
→
Section 8.2.6)
The following limits are set in the standard configuration:
Limit
Source
Limit
Cut-in delay
Cut-out delay
Remarks
1
Turbidity
10.0
6 s
0 s
Pre-alarm
2
Turb.Grad.
0.0
6 s
0 s
Inactive
3
Tempera-
ture
-30.0
6 s
0 s
Inactive
4
Temp.Grad
0.0
6 s
0 s
Inactive
5
Turbidity
30.0
8 s
0 s
Main alarm
6
Turb.Grad.
0.0
8 s
0 s
Inactive
7
Tempera-
ture
-30.0
8 s
0 s
Inactive
8
Temp.Grad
0.0
8 s
0 s
Inactive
On the temperature limits, the value -30.0 indicates that the function is deactivated. On all
other limits, the value 0.0 indicates that the function is deactivated.
The following applies for limit monitoring:
CAUTION!
The limits used must be adjusted according to the local conditions.
▪
Limits 1 .. 4 are intended for the lower limit level (pre-alarm) and are assigned to output
A1.
▪
Limits 5 .. 8 are intended for the higher limit level (main alarm) and are assigned to out-
put A2.
▪
In the standard setting, only the monitoring of the turbidity value is used.
▪
In order for a pre-alarm to always be triggered first before a main alarm, the cut-in delay
of the main alarm must be greater than that of the pre-alarm.
The limits have to be configured according to Section 8.3so that they are not only dis-
played, but also output accordingly.
