Ametek Thermox 2000 ATEX Series User Manual page 58

3-34 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
Alarm contact connections
This section describes how to make wiring connections for any alarm de-
vices you wish to connect to the control unit. Information on how to set
up alarms in software is described in the Alarms Key section.
Alarm connections
The Series 2000 control unit provides six sets of standard alarm contacts,
which are labeled as follows (see Figure 3-18):
ALARM 1A
ALARM 1B
The Watchdog Timer Alarm connections are labeled as follows on the con-
trol unit:
ALARM 1A
See the "Watchdog "Relay" in the Alarm Key section for complete infor-
mation on the watchdog timer alarm. The watchdog alarm contacts are
normally closed during system operations (deactivated). A watchdog event
triggers these alarm contacts to an open condition. If you have a watchdog
event, and the system returns to normal operations, then the watchdog
alarm will reset. The system will retain in memory the last time the watch-
dog condition occurred (see the "Exception Log" section in the Alarm Key
section for help on how to view this information).
The Service Alarm connections are labeled as follows:
ALARM 2A
ALARM 2B
See the "Service Alarm" in the Alarm Key section for complete information
on what events trigger the transfer of the service alarm. The service alarm
contacts are normally closed during system operations (deactivated). A
service alarm event triggers these alarm contacts to an open condition.
Oxygen Alarm connections are configurable in software to activate under
a variety of user defined conditions, and are labeled as follows:
ALARM 3A
ALARM 3B
See the Alarm Key section for complete information on all alarms, includ-
ing what they can track and how they operate.
ALARM 2A ALARM 3A
ALARM 2B ALARM 3B
ALARM 1B
ALARM 4A
ALARM 4B
ALARM 4A
ALARM 4B