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10.3 Commissioning using HART Communications
Note:
The instructions that follow assume that a suitable HART host is connected to the Searchzone Sonik and that the user is logged in with
'Engineer' profile access privileges.
Introduction
This section explains several operations that may be required during commissioning. The user should work through First Time
Switch On, User Configuration and Configure Device Identification Information, before selecting further operations as required by the
specific installation.
First Time Switch On
User Configuration
Configure Detection Algorithm Mode
Test 4-20 mA Loop Integrity
Configure Alarm Set Point
Output Test
Clear Latch
CAUTION
After changing any parameter, poll the Searchzone Sonik and verify that the received value is correct.
First Time Switch On
Note:
Searchzone Sonik is supplied ready for use. It does not require calibration during commissioning.
Note:
During commissioning the 4-20 mA output can be monitored either at the control room or locally with a multimeter. When connecting
or disconnecting a multimeter, power off Searchzone Sonik, otherwise the detector will indicate a latched warning that the 4-20 mA
loop was broken. If this occurs it can be cleared using HART communications.
1. Before applying power to the detector, ensure that the field wiring is correct and all electrical connections are correctly set up. Refer
to the Electrical Installation section of this manual for more information.
2. Apply power. Check that the supply voltage to Searchzone Sonik is between 18 and 32 Vdc. Monitor the 4-20 mA output during the
startup sequence, which should be as follows:
PN 2331M1220 Issue 1
Verifications required on first power up.
How to change settings from the default values:
Change the Password – how to change the password for
'Engineer' profile access.
Set the Time and Date - how to adjust the real time clock to local
time.
Configure Warning, Inhibit and Over-range Signal Levels -
how to change the signal levels from the default settings.
How to set algorithm mode for gas leak detection
How to force the mA output to set levels to test the system.
How to check that there is sufficient compliance in the loop to
signal alarm and over-range.
How to change the internal threshold used to log gas leak events.
How to test the system by simulating Alarm, Warning and Fault
conditions for Relay and mA loop.
How to clear alarm latch generated during commissioning.
CURRENT OUTPUT
< 1 mA
4 ± 0.05 mA
Searchzone Sonik − Technical Manual
DURATION
< 30 s
ongoing
10 Communications
72
11/2018
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