17
OPERATING AND MAINTENANCE MANUAL
Chapter 7
- iDRY Electronic Controller
NRC0020-0200 UL
The data in this manual are not binding and may be changed by the manufacturer without notice.
Reproduction of this manual, even partial, is strictly prohibited.
CAUTION
Alarms are displayed exclusively with the unit ON.
NOTE
Probe alarm “
” trips a few seconds after the probe develops a fault; this alarm is reset automatically few seconds after the probe resumes
normal operation. Before replacing the probe, check the connections.
The “
0
” and “
0
” temperature alarms are reset automatically as soon as the thermostat temperature returns to normal values.
The external alarms
and
(
X
=
.
) are reset as soon as the digital input is deactivated.
If the digital input is configured as pressure switch (
X
=
) the alarm must be reset manually by switching the instrument off.
7.5.2 High and low temperature alarm memorization
When the icon
illuminates, the unit is in alarm status:
Flashing=Alarm active;
Steady=Temperature alarm reset and memorised.
To check the type of alarm and its duration proceed as follows:
A Press either
or
.
B
The display shows:
“
” for the high temperature alarm (“
” for low temperature alarm), followed by the "Duration" "tiM" in h.mm.
C
The device then resumes the normal display presentation as set.
NOTE
The duration is to be construed as a partial value if the alarm is still in progress.
7.5.2.1 Deleting saved or currently active alarms
Proceed as follows:
A With the alarm shown on the display, press and hold
.
B
The message “
*(
”, will appear immediately and after 2 seconds it will start flashing to confirm that the values have been deleted.
C
If pressed again, the display shows the text "
+)
" (no alarm present).
7.5.3 Serial line for monitoring systems
The TTL serial line, available via the HOT KEY connector, enables interface with a compatible
ModBUS-RTU
monitoring system.
Summary of Contents for NRC0020-0200 UL
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