Manualshelf

Operating Instructions

ManualsBrandsSiemens ManualsRoom controlsRoom Condition Monitor, RPM series
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Siemens Building Technologies, Inc. 6-1
6
Point Database
Chapter 6 presents a description of the Fume Hood Monitor (FHM) point database including
point descriptors, point addresses, and a listing of applications in which each point is found.
Descriptor Address Application Description
CTLR ADDRESS 1 650, 651 Identifies the FHM on the Siemens Building Technologies, Inc.
FLN trunk. Valid values: 0 through 31.
APPLICATION 2 650, 651 The identification number of the program operating in the FHM.
Valid values are 650 and 651.
FACE VEL 4 650, 651 The calculated average air velocity through the face of the fume
hood.
LOW ALM 5 651 This point displays an ON or OFF status to indicate if an alarm
condition has occurred. When the face velocity drops below the
value specified in the point LOW ALM LIMIT (Point 13) for the time
specified in the point ALARM TIME (Point 96), this point goes into
an alarm state. The message LOW FACE VELOCITY displays on
the LCD and ALARM STATUS changes to ALARM (refer to Point
7).
HIGH ALM 6 651 This point displays an ON or OFF status to indicate if an alarm
condition has occurred. When the face velocity rises above the
value specified in the point HI ALM LIMIT (Point 10) for the time
specified in the point ALARM TIME (Point 96), this point goes into
an alarm state. The message HIGH FACE VELOCITY displays on
the LCD and ALARM STATUS changes to ALARM (refer to Point
7).
ALARM STATUS 7 651 The common indication of many alarm conditions. Status indicates
ALARM if: Low Face Velocity, High Velocity, Emergency (User
Alarm), or General Failure are in ALARM, or if the point FACE VEL
(Point 4) is failed. For all alarm conditions, the red LED is
illuminated, the green LED turns OFF, the alarm horn sounds, and
the alarm relay is de-energized.
GEN FAILURE 8 650, 651 Indicates a hardware failure (e.g., velocity sensor) with ON or OFF
status. The LCD displays FFF and GENERAL FAILURE.ALARM
STATUS changes to ALARM (refer to Point 7).
HI ALM LMT 10 651 This point sets the value, in fpm (m/s), which is used for the High
Alarm set point (refer to Point 6).
continued on the next page. . .