Point Database
3
Point Database
Chapter 3 presents a description of the Fume Hood Controller point database including point descriptors, point addresses, and a listing of applications in which each point is found.
Address | Descriptor | Description |
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01 | CTLR ADDRESS | Identifies the controller on the FLN trunk. Valid values: 0 through 98. |
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02 | APPLICATION | The identification number of the Application running in the controller. |
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05 | LOW ALM | This point displays an ON or OFF status. When the exhaust flow goes below the |
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| value specified at LOW ALM LMT for the time specified in ALARM TIME, the |
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| point goes into an alarm state (ON); the red LED is illuminated, the alarm |
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| sounds, and the message “FLOW LOW” displays at the ODP. |
06 | HIGH ALM | This point displays an ON or OFF status. When the exhaust flow goes above the |
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| value specified at HI ALM LMT for the item specified in ALARM TIME, the point |
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| goes into an alarm state (ON); the red LED is illuminated, the alarm sounds, and |
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| the message “FLOW HI“ displays at the ODP. |
07 | EMER ALM | This point displays an ON or OFF status that indicates if the EMERGENCY |
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| PURGE button on the ODP has been pressed. When the operator presses the |
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| EMERGENCY PURGE button, the point is ON, the red LED is illuminated, the |
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| alarm sounds, and EEE and EMERGENCY MODE display at the ODP. If pressed |
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| again, then the point is OFF. This point can be commanded by a field panel. |
08 | GEN FAILURE | Indicates a hardware failure (e.g., the pressure sensor) with an ON or OFF |
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| status. The red LED is illuminated; the alarm sounds, and FFF and GENERAL |
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| FAILURE display at the ODP. |
10 | HI ALM LMT | The value above FLOW STPT, in percent, at which the red LED and audible |
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| alarm are activated on the ODP. This point is the setpoint for HIGH ALM. Valid |
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| values: 100 through 255%. |
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11 | HI WARN LMT | The value above FLOW STPT, in percent, at which the yellow LED is illuminated |
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| on the ODP. Valid values: 100 through 255%. |
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12 | LOW WARN LMT | The value below FLOW STPT, in percent, at which the yellow LED is illuminated |
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| on the ODP. Valid values: 0 through 100%. |
13 | LOW ALM LMT | The value below FLOW STPT, in percent, at which the red LED and audible |
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| alarm are activated on the ODP. This point is the setpoint for LOW ALM. Valid |
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| values: 0 through 100%. |
14 | EMER TIMER | When EMER ALM is set to ON, the time set for EMER TIMER is used as the |
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| length of time the EXH FLOW is commanded to full flow (the exhaust flow control |
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| device is full open). After the time in EMER TIMER times out, the EXH FLOW is |
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| controlled to the value set in EMER STPT. Valid values: 0 through 32, 767 |
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| seconds. |
Siemens Building Technologies, Inc. | 17 |
