Model S4000CH
26
After a few seconds, the current address for Modbus Channel 2 is displayed. Apply and
remove the magnet until the desired address is displayed. Once the desired address is
displayed, wait 3 seconds and “
Fi
” will be displayed. Apply and remove the magnet to
return to the next level of the Setup menu. When “
Fi
” is displayed again, apply and
remove the magnet to return to normal operation.
Default settings for Channel 2 are: address 2, 19.2k baud, 8-N-1.
3.12 HART/Modbus SELECT
This option is not shown if HART was not purchased for the S4000CH. When HART is
selected via setup, the Channel 2 setup is not displayed or available. When Channel 2 is
changed from HART to Modbus, the previous settings are used.
NOTE:
The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses may
be the same.
3.13 Gas Check Mode
The sensor response can be checked without activating external alarms by placing the
S4000CH in Gas Check Mode. In this Mode, the alarm relays are inhibited and the analog
output is fixed at 1.5 mA. The display will show the gas concentration level.
3.13.1 Calibration Check
Place the magnet over the GM logo on the cover of the S4000CH. Remove the magnet
when a flashing pair of bars, “
- -
” (Figure 20) appears on the display (about ten seconds).
Apply the test gas to the sensor; the value of the gas concentration will be indicated by the
flashing display, and should stabilize in one to two minutes.
Figure 20: Calibration Check
When the reading has stabilized and the test is complete, remove the gas and the unit will
return to normal operation when the concentration drops below 5% full-scale.
If the ARGC is installed and enabled, the gas will be turned on and then automatically
turned off 1 minute later unless Calibration Mode is entered. Once in Calibration Mode,
calibration will take control of the ARGC.
If, after the reading has stabilized, the sensor is to be calibrated, simply apply the magnet
to the GM logo on the housing cover, and the unit will enter Calibration Mode.
Gas Check Mode can be aborted if gas has not been applied to the sensor. Simply
reapply the magnet to the GM logo on the cover and the unit will return to normal
operation.
Содержание S4000CH
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Страница 10: ...Model S4000CH 2 Figure 3 Sensor Remote Installation in inches Figure 4 ARGC Remote Installation ...
Страница 22: ...Model S4000CH 14 Figure 12 S4000CH Terminal Block Locations Figure 13 Remote Junction Box Terminal Block ...