Chapter 7
Programming
Programming occurs after hardware installation is complete. The smoke control system must be programmed for automatic response, weekly self- testing,
Response times
Time response requirements must be kept in mind when programming. They are give in Table 27.
Table 27. Time response requirements
Response time | Process |
|
|
10 seconds | (UL 864: 49.2.a) |
| The maximum time allowed from when an acti- |
| vation signal is received until a fire or smoke |
| safety function is initiated. An activation signal |
| could be from the FACP of the FSCS. |
|
|
15 seconds | The maximum time allowed between a feed- |
| back signal activation and an FSCS panel indi- |
| cation (either audio or LED). A feedback signal |
| will typically be a binary value, either hard- |
| wired or communicated. |
|
|
60 seconds | (UL 864: 49.2.c) |
| Fan operation proof of desired state, either on |
| or off. |
|
|
75 seconds | (UL 864: 49.2.c) |
| Damper position proof of desired position, |
| either open or closed. |
|
|
200 seconds | (UL 864: 49.2.b) |
| The maximum time allowed between determi- |
| nation of a failure state of critical equipment or |
| process and notification of that failure. A failure |
| state could include communication failures or |
| equipment problems such as a fan not starting |
| as commanded. |
|
|
The 10 second time limit mentioned in Table 27 controls how fast Tracer Graphical Programming (TGP) programs can be run. Suggested program rates are 2 seconds for communication watchdogs and
99 |