Commissioning
RMA42
30
Hauser
!
Note!
If several channels are active, the device switches automatically between the channels configured.
Non-activated channels, calculated values and minimum and maximum values are called up
manually by pressing the ‘
+
’ and ‘
-
’ keys and appear for 5 seconds on the display.
6.4.8
Overfill protection
In accordance with Annex 2, Section 2(3) and Section 4 of TRbF 510 (Regulation/construction and
inspection guidelines for overfill protection units), and in accordance with the approval guidelines
for overfill protection units (ZG-ÜS), the device can be used as a limit signal transmitter for overfill
protection units with continuous level measurement for storing combustible and noncombustible
liquids which are hazardous to water.
Reason:
The device meets the requirement that plant units without an inspection label have to comply with
the general and special construction and inspection principles for overfill protection in accordance
with Annex 2, Section 4, in the following situations:
a.
in the event of power supply failure and
b.
if limit values are overshot or undershot and
c.
if the connection wires between the upstream isolating transmitter and the meter are
disconnected, the safety-oriented message "Maximum level" appears (the limit relay
deenergizes).
The set limit values for overfill protection must be protected against unintentional modification.
"
Caution!
The following function must be activated if additional access protection should be provided for the
configuration software:
Select
Expert / Setup
É
System
É
Overfill protect
: German WHG.
Configuration when operating the device in accordance with TRbF510:
The device must be set up and operated in accordance with these Operating Instructions which
belong to the device.
• Universal inputs have to be configured (as described in Step 1 - Step 3 (
• Limit values have to be configured as follows (as described in Step 5,
25):
Function
: MAX
Assignment
: which input signal should be monitored?
Set point
: maximum limit value to be monitored; value for the switching threshold
Hysteresis
: no hysteresis (=0)
Time delay
*: no switching delay (=0) or the set time must be taken into account for the tail
quantity
Operating mode
*: norm closed (relay is de-energized if the limit value is violated; set at the
factory)
Failure mode
*: norm closed (relay is de-energized in the event of an error; set at the factory)
*) Only in the Expert menu.
• The device must be locked against access from non-authorized persons;
User code
protects the parameters configured (as Step 6,
29):
Enter the 4-digit code: select digit with ‘+’ or ‘-’ and confirm the individual digit with ‘E’; once
the digit has been confirmed, the cursor moves to the next position, or skips back to the
‘System’ menu item once the fourth digit has been entered
The lock symbol appears on the display.
• Select
Setup
É
System
É
Overfill protect
: German WHG.
It is absolutely essential to assign the device to a WHG application. Confirming the ‘Overfill
protect: German WHG’ parameter provides additional safety. The device status has to be
changed if configuring the device by means of the FieldCare operating software, i.e. WHG must
be disabled to be able to change parameters.
