Johnson Controls GS3000, Руководство по установке, Страница: 6 / 18

Operation alarms
Table 1: Operation alarms
Start-up Normal Test
mode
Comm
failure
with CO
sensor
pod
Comm
failure
with NO
2
sensor
pod
CO ppm
> buzzer
setpoint
NO
2
ppm
> buzzer
setpoint
ppm >
strobe
setpoint
ppm >
alarm 1
setpoint
Status LED Flashing
green
Green Flashing
red
Flash red
every 10
min
Flash red
every 10
min
Flashing
red
Flashing
red
Flashing
red
Flashing
red
Strobe
LED
OFF OFF Flashing
- - - -
Flashing
-
Alarm LED OFF OFF Red - - - - - Red
Buzzer OFF OFF Beep
every 15 s
Short
every 10
min
Short
every 10
min
On, short On, long
- -
Note:
• The sensor readings compare to pre-set setpoints
for alarms and if exceeded, the device enters
alarm mode
• There is no alarm associated with the
temperature value
• Alarm 1 is always tied to Relay 1 and Alarm 2 is
always tied to Relay 2
• Alarm 1 and Alarm 2 may be freely assigned to CO
or NO
2
• The alarm resets back to Normal Mode, which
you can configure through the Menu as either
Automatic Reset or Manual Reset
• When an alarm condition occurs, the alarm status
displays alternately with the normal display. If
more than one alarm occurs, they alternate every
2 s with the normal display. This includes all active
alarm conditions.
Figure 18: Alarm status conditions
• When a buzzer alarm condition occurs, the buzzer
alarm status displays alternately with the normal
display. If more than one alarm occurs, they
alternate every 2 s with the normal display. This
includes all active alarm conditions.
Figure 19: Buzzer status conditions
• For a CO buzzer alarm, the sound is a short beep
• For an NO
2
buzzer alarm, the sound is a long beep
• The LCD displays an alarm if a sensor pod is
not communicating and the buzzer beeps once
every 10 min. Press the TEST switch to silence the
buzzer.
Figure 20: LCD alarm conditions
Automatic alarm reset
Program the trip point, hysteresis and delay time of each
alarm through the Menu. For example, Alarm 1 defaults
to a 50 ppm CO trip point, 10 ppm hysteresis, and 2 min
delay time. Alarm 2 defaults to a 150 ppm CO trip point,
20 ppm hysteresis, and 2 min delay time. You can change
all of these values through the Menu. In the example for
Alarm 1, a timer starts when the CO level exceeds 50 ppm,
the trip level. If the level drops below 50 ppm before 2
min, the delay time, expires, the alarm does not activate.
If the CO level exceeds 50 ppm for 2 min, the alarm
activates. The alarm remains activated until the CO level
drops below 40 ppm, the trip level for hysteresis. Use
Alarm 1 to signal a low alarm. Alarm 2 operates in the
same manner and has an independently programmable
trip point, hysteresis, and delay time. Use Alarm 2 to
signal a high alarm. The LCD indicates the Alarm mode
details and the LED flashes red. Relay 1 ties to Alarm 1 and
Relay 2 ties to Alarm 2.
Buzzer alarm
The buzzer alarm defaults to a 150 ppm CO trip point and
5 min delay time and you can program the buzzer alarm
in a similar manner to Alarm 1 and Alarm 2. When the
trip point is exceeded for a time longer than the delay
time, the buzzer sounds until the CO level falls below the
trip point. The buzzer operates independently of Alarm 1
and Alarm 2 and you can disable ithe buzzer through the
Menu. If enabled, and the device is in Alarm mode, press
the TEST switch to silence the buzzer only. Buzzer silence
only holds until the buzzer alarm condition clears so the
next buzzer setpoint alarm activates the buzzer again. The
TEST switch does not change the status of LEDs, and only
silences the buzzer.
GS3000 Gas Detection Sensor Series Installation Guide 6