Det-Tronics EA2100CG Eagle 2000 Communication Gateway - Manual (Page 32)

Section VIII
System Startup
STARTUP PROCEDURE
1. Output loads that are controlled by the system
should be secured (remove power from all output
devices) to prevent actuation.
2. Check all system wiring for proper connection.
3. Before installing the gateway in the mounting rack,
inspect it to verify that it has not been physically
damaged in shipment. Check the rocker switches
for proper programming, then slide the gateway
fully into the mounting rack.
4. Apply power to the system.
NOTE
To prevent the communication modules from going
into a fault isolation condition, it is recommended
that power be applied to the gateway prior to
applying power to the communication modules.
5. Program the system for the desired operation.
Down load configuration data to all devices.
NOTE
After system configuration has been completed, the
entire system should be tested for proper operation
to ensure that configuration was performed properly.
6. Calibrate the sensors.
7. Remove mechanical blocking devices (if used) and
restore power to the output loads.
SYSTEM CONFIGURATION
The host device connected to the Modbus port of the
gateway configures the communication modules by set-
ting two words of configuration data in predefined regis-
ters in the gateway. The gateway uses these two words
of data to determine configuration information that will be
transferred to the appropriate communication module.
Other operating parameters such as alarm setpoints
and calibration gas concentration can be changed
using the gateway transfer buffer in conjunction with the
control word for the communication module.
For complete information regarding system configuration,
refer to the Det-Tronics EagleVision Software manual for
systems equipped with the Det-Tronics Operator Interface
System. For other systems, refer to form 95-8433 for con-
figuration information.
CALIBRATION
To ensure optimum protection, calibration must be per-
formed on a regularly scheduled basis. Since each
application is different, the length of time between regu-
larly scheduled recalibrations can vary from one installa-
tion to the next. In general, the more frequently a sys-
tem is checked, the greater the reliability.
IMPORTANT
To ensure adequate protection, calibration must be
performed on a regularly scheduled basis.
Refer to the sensor manual for additional information
regarding calibration.
NOTE
The calibration will be aborted and the detector will
revert back to the previous calibration values if the
calibration is not completed within 12 minutes.
The red LED will turn off, the calibrate bit will be
reset, and the calibration fault bit will be set in the
communication module status word. The calibra-
tion will be logged as aborted.
CALIBRATION ALGORITHMS
The following section describes the calibration
sequences that are used for calibrating various detec-
tion devices. Refer to the System Configuration Matrix,
form number 95-8453, to determine the calibration algo-
rithm that is used for the type of detector being calibrat-
ed. Refer to Figures 29 to 33 for calibration algorithms.
NOTE
Some calibration procedures require the operator
to activate the reed switch in the communication
module. To activate the reed switch, place the
magnetic calibration tool on the side of the enclo-
sure midway between the two mounting holes,
approximately one inch above the mounting sur-
face (approximately 3 1/2 inches above the mount-
ing surface for intrinsically safe DCUs). Hold the
magnetic calibration tool in place for 4 seconds to
initiate steps of the calibration procedure.
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