Operation
RMS621
26
Hauser
5.2.3
Operating example
A detailed description of on-site operation with an application as an example can be found in Section
6.4 ’User-specific applications’.
5.3
Error message display
The device differentiates between two types of errors:
•
System error:
this group comprises all the device errors, e.g. communication errors, hardware
errors, etc. System errors are always signalled by
fault messages
.
•
Process error:
this group comprises all application errors, e.g. “range overshoot”, including limit
value alarms etc.
For process errors, you can configure how the device reacts in the event of an error, i.e. whether a
fault message
or a
notice message
is displayed.
On leaving the factory, all process errors are preset
as notice messages
with a colour change.
Fault messages
A fault is signalled by the display changing colour from blue to red and by an
exclamation mark
(!)
along the top edge of the display. The error is displayed as plain text. The fault is acknowledged
by actuating any key. Via the Navigator menu, you can get to the error list and to the Main menu
to rectify the error if necessary. When a fault message occurs, all measurements and the counters
are stopped. The input signals behave as per their configured failsafe mode (see Section 6.3.3 ’Main
menu - Setup’). The device does not resume normal operation until all the faults are rectified.
Notice messages
Configuring the error type for process errors
Process errors are defined as notice messages in the factory setting. You can change the alarm
response of process errors, i.e. process errors are indicated by a fault message.
1.
Configure as
Setup
Æ
Basic set-up
Æ
Alarm response
Æ
Random
2.
Individual alarm responses for the inputs and applications can then be defined in the device
menu for inputs (Q, P, T), applications and outputs.
The following process errors can be configured:
• Inputs:
Open circuit, sensor signal range violation
• Applications:
Wet steam alarm, phase transition
A notice is signalled by an
exclamation mark (!)
in the
display. It can also be signalled (as an option) by a colour
change and by displaying an alarm on the display. The
exclamation mark is along the top edge of the display. In
addition, some errors are signalled by an icon beside the
corresponding measured values. Notices do not have any
affect on the operation and counters but rather merely
indicate that a certain event has arisen (e.g. range has been
overshot).
Icons appear along the top edge of the display next to the display parameter affected by the error which has occurred.
Signal overshooting (x > 20.5 mA) or undershooting (x < 3.8 mA)
Error:
fault or notice pending;
Æ
error list
Phase transition:
steam condensing, water boiling
