Siemens 125-5033 - Manual (Page 12)

Fume Hood Controller Owner's Manual
4 Siemens Building Technologies, Inc.
24V COMMON
24V HOT
GROUND LAB00140R1
FLN TRUNK
+ - S
(SHIELD) (SHIELD)
(+) (+)
(-)
(-)
TEC0470R1
Figure 2. Power Wiring. Figure 3. Communication Wiring.
Controller LED Indicators
The controller has six Light Emitting Diode (LED) indicators. See Table 2.
Table 2. Controller LEDs.
LED Type Label
(if present)*
Indication
DO LED 1 - LED 3 Indicates the ON/OFF status of the DO associated with it. A
glowing LED indicates that the DO is energized.
Transmit TX Indicates, when flashing, that the controller is transmitting
information to the field panel.
Receive RX Indicates, when flashing, that the controller is receiving
information from the field panel.
BST
”Basic Sanity Test”
BST Indicates, when flashing ON and OFF once per second, that
the controller is functioning properly.
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.