Alarms And Troubleshooting - Eliwell Coldface EWHT800LX Series Manual

SUPERVISION
EWHT800LX can be connected to:
• telecontrol system TelevisSystem (°)
• third-party systems via Modbus protocol (°°)
• ParamManager fast parameter setting software
The connection can be made in 2 ways:
1) via TTL serial port. See Electrical Connections.
Use the BusAdapter150 TTL- RS 485 interface module
2) by direct RS-485 connection using the optional RS485/TTL plug-
in module (not included).
See figure opposite.
In both cases, use a RS485/RS232-USB PC interface converter and
the required software licence.
(°) To configure the instrument for this purpose, open the file identified by the label "Add" and use
parameters "dEA" and "FAA*
(°°) To configure the instrument for this purpose, open the file identified by the label "Add" and use
parameters "dEA", "FAA", "PtY"*
*FOR MORE INFORMATION READ the manual, p/n 9MA10024

ALARMS AND TROUBLESHOOTING

How to display the alarms
1) Press and release the UP key. The upper display will always show the label ALr. The lower display
will show:
• nOnE if no alarms active
• SYS to indicate system alarms - see Alarms Table
• HACP to indicate HACCP alarms - see HACCP alarms
2) Using the UP & DOWN keys, find the type of alarm that you want to check
System alarms
The upper display will show the label ALr, the lower display will indicate the alarm code
- see Alarms Table
• Using the UP & DOWN key, scroll the other alarms
• Press the ESC key to return to the previous alarm code, press the ESC key several times (or keep it
pressed) to return to the normal display
HACCP ALARMS
The instrument logs high and low temperature alarms for the cold room probe, as well as any power
failures. The alarm types and the duration and start time of the alarm itself will be displayed in the
alarms folder ALr. It is possible to disable the recording of alarms and/or resetting of HACCP alarms.
See Functions Menu.
FOR MORE INFORMATION READ the manual, p/n 9MA10024
EWHT800LX
Analogue Analogue
0...20mA
Output - AO Output - AO
4..20mA
RS 485
39 40 41
Bus
Adapter
RS-485
Analogue
Output - AO
TTL
39 40 41 45 46 47 51 52 53
TTL
RS-485
RS485 connection to
Keyboard
TelevisSystem available
with optional plug-in
module only
Copy Card
2 3 4 5
8 9 10 11 12 13
AUX 2 AUX 2
OUT8 OUT7
H28 H27
10 - EN
0...10V PW
GND
10V 55mA
39 40
Pb
Pb5
54
EWH
14 15 16 17 18 19
AUX 1 AUX 1
OUT6 OU
H26 H2