Sentry Industries 5000 System Errors, Trouble Conditions, WARM-UP Timers, Access Codes

MODULE WARM-UP.

SMC sierra monitor corporation Sentry Instruction Manual - Version 6

7.3.2 WARNING AND ERROR MESSAGES

7.3.2.1 SYSTEM ERRORS

If Sentry cannot operate the basic computer functions one of the System Errors listed in Table 7-1 will display.

These failures indicate internal controller problems which are most likely to require board level repairs by the factory.

7.3.2.2 TROUBLE CONDITIONS

The following "Trouble Conditions" require operator corrective action.

DISCONNECTED: The controller is not able to communicate with the module

CHECK POWER ADJ	A hydrogen sulfide sensor heater
	is not functioning. Current drops
	to zero or voltage increases to
	maximum.
MODULE VOLT LOW	The module voltage is too low
	(<11.5V). This indicates there is
	an excessive drop in the line
	from the controller to the
	module.
SENSOR FAILURE	Sensor signal voltage is out of
	limits.
DUPLICATE MODULE	A response to one address
	number has been received on
	two channels.
CHK BRIDGE VOLTAGE	The bridge voltage on a
	combustible sensor is out of
	limits.
TYPE ERROR	The module which responded is
	a different type than previous
	response.

When any of these conditions are identified the controller:

∙activates the trouble relay and trouble light

∙displays an "E --” beside the corresponding module number (i.e.: "1E --")

∙describes the error condition on the lower display, and

∙logs the error in history memory for later recall via the keyboard or printer.

NOTE

Trouble conditions logged into memory are erased by the Reset System command. All other erasable History is cleared by the Reset History command.

All other modules on the channel and modules on other channels remain in full operation and continue to be scanned by the controller. If the problem is corrected, the trouble light and relay will turn off and the module will be brought back on line after a warm-up period.

7.3.2.3 WARNING AND STATUS

The warning and status messages are displayed when valid and do not log to history.

7.3.3 WARM-UP TIMERS

Three “timers” are used by Sentry to delay bringing the system or parts of the system on-line during a stabilization period. These timers can be cleared via the diagnostic code “0000” described in Appendix C.

∙SYSTEM WARM-UP:After any loss of power (AC & DC) Sentry will count down a five minute

system warm-up. During this period the modules will be under power but will not be displayed, nor will their output be used to determine a gas concentration.

∙MODULE WARM-UP:Any module which has been disconnected, or has just been “recognized” by the controller will be held in a module warm-up delay for a period of five minutes before being displayed as “on line”.

∙CALIBRATION DELAY: Immediately after

calibration each module is held in a calibration delay which is similar to the module warm-up. Although the controller display indicates CALIBRATION COMPLETE/PLEASE WAIT if the system is reset, each applicable module will be indicated as

7.3.4 ACCESS CODES

Sentry software allows users to establish user codes which restrict access by unauthorized users to critical parameters or functions. (See Section 8.3).

7.3.5 DIAGNOSTIC CODES

Diagnostic codes allow the technician to use the system software to collect diagnostic data for use in system check-out. Diagnostic code assignment is described in Section 8.3.5.

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