Ronan X11SN - Manual (Page 11)

9.2 M, Manual Reset
1. Acknowledge, reset and test push
buttons.
2. Alarm audible device.
3. Lock-in momentary alarms until
acknowledged.
4. The audible device is silenced and
flashing stops when acknowledged.
5. Manual reset of acknowledged alarm
indications after process conditions
return to normal.
6. Operational test.
8.3 Output Features
The X11SN System provides the following fea-
tures on the terminal located in the lower, left,
rear terminal plate.
8.3.1 Common Trouble Alarm. This output is
at terminal CA and follows the field contacts A
24 Vdc relay wired between CA and V+ will
energize whenever a point is abnormal (in
alarm) and the relay will stay energized until
all points in the system return to normal.
8.3.2 Reflash. This output is at terminal F4
and follows the field contacts. A 24 Vdc relay
wired between F4 and V+ will energize when-
ever a point is abnormal (in alarm). If a sec-
ond point goes abnormal (in alarm) while the
first point is still abnormal, the reflash module
briefly returns to normal then goes abnormal
until all points return to normal.
8.3.3 Auxiliary Contact Module. The auxiliary
contact module is available with a single, dual,
triple or quad relay circuit, accommodating the
window density selected. The modules plug in
from the front of the system and may be pur-
chased initially or added later in the field. The
terminals for the contact outputs are furnished as
part of the system. Each relay provides a selec-
table Form A or B type contact with a rating of 2
A at 28 Vdc. Relays are available in either
Hermetically Sealed or General Purpose types.
Normally open (Type A) or normally closed (Type
B) contact is available for each alarm point at
their respective rear terminal block terminals 5
and 6. The normal operation (NO/ NC) can be
changed on the auxiliary contact module at head-
ers marked AUX1, AUX2, AUX3, or AUX4.
8.3.4 Transistor Output
Terminal 4 (TO) of each alarm I/O terminal strip
provides an open collector output (pulling to -V)
programmable for various system functions. A
typical application is to drive an auxiliary relay
following the field contact or lamp logic.
10
9.0 STANDARD SEQUENCES
(For other special sequences consult factory)
9.1 A, Automatic Reset
1. Acknowledge and test push buttons.
2. Alarm audible device.
3. Lock-in of momentary alarms until
acknowledged.
4. The audible device is silenced and
flashing stops when acknowledged.
5. Automatic reset of acknowledged
alarm indications when process
conditions return to normal.
6. Operational test.