5.1
95-8654
6
CONTROL MESSAGE
The control message manages loop device specific
commands, such as integrity check, LED, relay and sound
control. The control message is transmitted from the
controller every 20 seconds, or immediately when there is
a change in the state of an output channel. A fault will be
annunciated if the control message is not received at the
controller within 2 minutes.
INTEGRITY CHECK
Integrity checks are internal tests that are performed on loop
devices that support the integrity check feature. All Apollo
Discovery detectors and manual call points are equipped with
the integrity check feature. The integrity check may be initiated
and monitored via the ASH Module point display in S3.
Passive and Active Integrity Checks
During a passive integrity check no alerts will be sent to
the ASH Module or EQP Controller. All indications will be
handled by the local LEDs on the loop devices.
An active integrity check will be indicated on the ASH
Module, the controller, and the loop devices as an active
alarm. A fault indication will be generated if the integrity
check fails.
Automatic Integrity Check (AIC)
When enabled, an automatic integrity check is performed
every 24 hours for all the loop devices. The ASH Module
controls the initiating of the integrity check for each loop
device, one at a time. The AIC is disabled by default and
the start time is configurable within the ASH Apollo editor
in S3. If a device is currently in the middle of an AIC,
and the AIC becomes disabled, that particular device
will conclude its test, but no new test will begin. Manual
integrity check requests are ignored during an AIC, and
if a manual integrity check is in progress when an AIC is
scheduled, the AIC will be delayed.
Manual Integrity Check (MIC)
The manual integrity check can be performed individually
for a single loop device, or globally for all devices on a
single ASH Module.
NOTE
If a manual integrity check is already in progress,
a new request of either an AIC or MIC will be
ignored.
Integrity Check Faults
When an integrity check fails, the loop device fault LED
will be activated. The fault indication will remain until an
ASH Module reset is performed, or until another integrity
check is done, and passes.
NOTE
If there is an active alarm, any new integrity
check request is ignored. If an integrity check is
in progress and an alarm condition occurs, the
integrity check will be interrupted and the alarm
will be annunciated.
WALK TEST
The walk test is intended to verify the operation of the loop
devices. A walk test is activated by physically walking up
to each device, one at a time, and setting them into an
alarm condition. Alternatively, a walk test can be activated
from the ASH Module’s point display within S3. The test
verifies that each device does indeed go into an alarm.
The alarm condition is logged into the EQP Controller, but
the controller takes no further action.
SPECIFICATIONS
INPUT VOLTAGE—
24 Vdc nominal, 18 to 30 Vdc.
INPUT CURRENT (Maximum)—
690 mA.
LOOP CURRENT (Maximum)—
225 mA.
POWER CONSUMPTION (Maximum)—
11 Watts.
WIRING (Maximum)—
12 AWG 14 AWG 16 AWG 18 AWG
4 mm22.5 mm21.5 mm20.75 mm2
Feet 15500 9800 6200 3900
Meters 4700 3000 1900 1200
TEMPERATURE RANGE—
Operating: –40°F to +185°F (–40°C to +85°C).
Storage: –67°F to +185°F (–55°C to +85°C).
A2536
6.31
(16.0)
4.31
(10.9)
4.56
(11.5)
2.0
(5.08)
Figure 6—Dimensions of the ASH Module in Inches (Centimeters)
