End process verification

End process verification

End process verification confirms that a device responded to an operation command. End process verification programming consists of:

Programming the system to test binary input points for responses to commands sent to output points

Setting a counter to provide a time delay that allows the system time to respond before setting a fail flag

Setting a fail flag if the counter times out

Programming the system to send a fail flag to Tracer MP581s controlling the FSCS, which results in the FSCS turning on a fail light

Figure 59 shows an example of TGP used to determine a status of the outdoor air, return air, and exhaust air dampers. Each damper position status is compared to the relevant damper position request and a normal/ fail state flag is derived. This segment will trigger an alarm event and send a fail flag to the Tracer MP581 that interfaces with the FSCS panel. A mechanical system reaction to the failure is not necessary.

Based on Table 28 on page 101, the self-test needs to be overridden if either a smoke alarm is triggered or a manual override takes place.

Figure 59. Sample TGP showing fail test technique

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Trane Engineered Smoke Control System for Tracer Summit, BAS-APG001-EN manual End process verification, 109

BAS-APG001-EN, Engineered Smoke Control System for Tracer Summit specifications

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