Siemens 125-5033 Benutzerhandbuch - Seite 25

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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

CTLR ADDRESS

APPLICATION

LOW ALM

HIGH ALM

EMER ALM

GEN FAILURE

HI ALM LMT

HI WARN LMT

LOW WARN LMT

LOW ALM LMT

EMER TIMER

Siemens Building Technologies, Inc.

Identifies the controller on the FLN trunk. Valid values: 0 through 98.

The identification number of the Application running in the controller.

This point displays an ON or OFF status. When the exhaust flow goes below the

value specified at LOW ALM LMT for the time specified in ALARM TIME, the

point goes into an alarm state (ON); the red LED is illuminated, the alarm

sounds, and the message "FLOW LOW" displays at the ODP.

This point displays an ON or OFF status. When the exhaust flow goes above the

value specified at HI ALM LMT for the item specified in ALARM TIME, the point

goes into an alarm state (ON); the red LED is illuminated, the alarm sounds, and

the message "FLOW HI" displays at the ODP.

This point displays an ON or OFF status that indicates if the EMERGENCY

PURGE button on the ODP has been pressed. When the operator presses the

EMERGENCY PURGE button, the point is ON, the red LED is illuminated, the

alarm sounds, and EEE and EMERGENCY MODE display at the ODP. If pressed

again, then the point is OFF. This point can be commanded by a field panel.

Indicates a hardware failure (e.g., the pressure sensor) with an ON or OFF

status. The red LED is illuminated; the alarm sounds, and FFF and GENERAL

FAILURE display at the ODP.

The value above FLOW STPT, in percent, at which the red LED and audible

alarm are activated on the ODP. This point is the setpoint for HIGH ALM. Valid

values: 100 through 255%.

The value above FLOW STPT, in percent, at which the yellow LED is illuminated

on the ODP. Valid values: 100 through 255%.

The value below FLOW STPT, in percent, at which the yellow LED is illuminated

on the ODP. Valid values: 0 through 100%.

The value below FLOW STPT, in percent, at which the red LED and audible

alarm are activated on the ODP. This point is the setpoint for LOW ALM. Valid

values: 0 through 100%.

When EMER ALM is set to ON, the time set for EMER TIMER is used as the

length of time the EXH FLOW is commanded to full flow (the exhaust flow control

device is full open). After the time in EMER TIMER times out, the EXH FLOW is

controlled to the value set in EMER STPT. Valid values: 0 through 32, 767

seconds.

Description

Point Database