Siemens 125-5033 Manuel du propriétaire - Page 12

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Fume Hood Controller Owner's Manual
24V COMMON
24V HOT
GROUND
Figure 2. Power Wiring.

Controller LED Indicators

The controller has six Light Emitting Diode (LED) indicators. See Table 2.
LED Type
DO
Transmit
Receive
BST
"Basic Sanity Test"

Operator Display Panel (ODP)

The Operator Display Panel (ODP) is the interface device between the Fume Hood Controller
and the operator. Its main functions are to display normal, warning, and alarm conditions to
the operator. The ODP consists of a housing, three Light Emitting Diodes (LEDs), a liquid
crystal display (LCD), four buttons, and a portable operator's terminal port. See Figure 4. The
ODP buttons function as follows:
Horn Silence button – Pressing the Horn Silence button turns the audible alarm off for the
current alarm event.
Emergency Purge button – Pressing the Emergency Purge button removes contaminated
air from the fume hood by switching to an emergency exhaust flow level. The internal audible
alarm will sound. Emergency Purge automatically overrides any other control mode in the
Fume Hood Controller.
4
Table 2. Controller LEDs.
Label
(if present)*
LED 1 - LED 3
Indicates the ON/OFF status of the DO associated with it. A
glowing LED indicates that the DO is energized.
TX
Indicates, when flashing, that the controller is transmitting
information to the field panel.
RX
Indicates, when flashing, that the controller is receiving
information from the field panel.
BST
Indicates, when flashing ON and OFF once per second, that
the controller is functioning properly.
FLN TRUNK
+ -
S
(SHIELD)
(-)
(-)
(+)
(+)
Figure 3. Communication Wiring.
Indication
Siemens Building Technologies, Inc.
(SHIELD)