Bacharach GDA-1600 Benutzeranleitung
GDA-1600 16-Channel Controller
Instruction 5700-9001
22
3.3.1 Common Alarm Relay 1 & 2
WARNING: READ THIS SECTION CAREFULLY AND TEST ALL
SETTINGS BY SIMULATING GDA-1600 INPUT CONDITIONS THAT
SHOULD ACTIVATE THESE ALARM RELAYS!
Common Relay 1 & Common Relay 2 menus are identical and therefore discussed
only once. It is very important to fully understand these menus since they determine the
functions of each common relay.
Figure 3.11 – Relay Menus
Entries
Description
Group
The Group menu entry offers additional flexibility by controlling which channels trip
this menu’s common alarm relay. The 3 choices are 1-16, 1-8 or 9-16. Some
applications have different types of sensors or sensors in different areas connected to
the same GDA-1600 Controller. In these cases, it may be undesirable for a sensor on
channel 9 to trip the same relay as a sensor on channel 2. The Group menus may
restrict this. For example, channels 1-8 might be set to trip common relay 1 while
channels 9-16 trip common relay 2. Another possibility is that channels 1-8 be set to
trip common relay 1 while channels 9-16 trip relays on an optional discrete relay PCB
configured for Alarm 1 (see section 4.2.2 on page 30).
Failsafe
Failsafe controls relay activation for this common relay. Failsafe ON causes the relay
to de-energize during alarm conditions and energize when there is no alarm. Thereby,
a power failure forces the relay contact to the alarm position. Note the common Fault
relay is always failsafe and may be monitored separately to indicate loss of power
conditions in many applications.
A1 Votes
A1 and A2 Votes allows creation of logical AND function equations that control
common relay 1 & common relay 2. Default settings for common relay 1 are A1 Votes
= 01 and A2 Votes = 00, which causes relay 1 to trip if any channel has an A1 level
alarm active. Default settings for common relay 2 are A1 Votes = 00 and A2 Votes = 01
which causes relay 2 to trip if any channel has an A2 level alarm active. Example: If
either default setting is modified such that A1 Votes = 02 and A2 Votes = 01, then any
two channels must have an A1 level alarm active and any one channel must have an A2
level alarm active to trip that relay.
CAUTION: One of the A1s and the A2 could be on the same channel. These level alarms
CAUTION: One of the A1s and the A2 could be on the same channel. These level alarms
must come from a channel included in the Group entry described above.
A2 Votes