Honeywell AQS51, Руководство по установке, Страница: 3 / 8

AQS 51/61 CO2 / TEMPERATURE SENSOR WITH BUILT-IN CONTROLLER
EN1B-0189GE51 R0102 3
Removing System Unit from Wall Plate
Fig. 4. Removing the wiring terminal cover and the
sensor/controller
1. Loosen the screw on top of the wiring terminal cover and
remove the wiring terminal cover from the wall plate (see
Fig. 4).
2. Pull out first the bottom of the sensor/controller, then
disengage the top tabs and remove the top.
Wiring
0%
20
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n
t
vo
lta
ge
cu
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t
vo
lta
ge
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lta
ge
ope
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co
lle
ct
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R/T
GND
+5 V
RXD
TXD
digital input
startpoint
selection
jumper
OUT1 OUT2 OUT4
G+ G0 OUT1OUT2 OUT4 M
normally-open
relay
Fig. 5. Connections and jumpers on AQS51/61. The
shaded positions represent the default settings
CAUTION
Check that all wiring is correctly completed before
turning the power on! Do not connect wires when the
unit is powered. Do not detach the sensor/controller
from the wall plate when the power is on!
The AQS51/61 signal ground (M) is not galvanically
separated from the power supply G0 terminal. If the analog
output signals are connected to controllers or DDC systems,
these units must have the same ground. If necessary, use
separate floating transformers for sensor and controller /
DDC system.
1. Connect the correct wires to the terminals and securely
tighten each terminal screw. Follow the actual job wiring
diagrams if available or refer to Table 2 for terminal
designations. A sticker is located on the inside of the
terminal cover that identifies the terminals (see Fig. 5).
All wiring must comply with local electrical codes,
ordinances and regulations.
2. Place the wiring terminal cover by fitting the notches of
the cover into the hooks of the wall plate. Tighten the
locking screw (see Fig. 6).
Fig. 6. Installing the wiring terminal cover
Electrical Connections
CAUTION
The power supply must be connected to G+ and G0.
G0 is considered as system ground. If the analog
output is connected to a controller, the same ground
reference must be used for the AQS51/61 unit and for
the control system! Unless different transformers are
used, special precautions must be taken!
NOTE: The signal ground of the AQS 51/61 is not
galvanically separated from its power supply!
Table 1. Default output configurations for AQS51/61
Terminal Default output Default output range
OUT1 0...10 Vdc 0...2000 ppm CO
2
OUT2 0...10 Vdc 0...50 °C
closed > 1000 ppm CO
2
Relay
open < 900 ppm CO
2
closed > 2000 ppm CO
2
OUT4
open < 1900 ppm CO
2
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