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GENERAL
The AQS51-KAM and AQS 61-KAM sensors/controllers for
duct mounting measure the carbon dioxide (CO
centration and the temperature in the return or outside air.
They are used in ventilation and air conditioning systems to
control the amount of fresh outside air being supplied to the
occupants for acceptable indoor air quality and to reduce
unnecessary conditioning of outside air during low-
occupancy periods.
This Demand Controlled Ventilation (DCV) is a cost effective
solution to conserve energy and to ensure that the fresh
outside air supplied is no more than is necessary to meet the
actual requirements of the occupants at any given time.
The sensors/controllers offer separate 0(2)...10Vdc or
0(4)...20mA outputs for CO
a digital ON/OFF relay output with switching hysteresis for
alarm or other purposes.
The UART interface (RS232) for serial communication allows
a PC to be connected in order to perform maintenance
checks or reconfigurations during normal operation. If used
as a controller, each of these outputs can be configured to
® U.S. Registered Trademark
Copyright © 2000 Honeywell Inc. • All rights reserved
) con-
2
and temperature and in addition
2
AQS51/61-KAM
COMBINED CO
DUCT SENSOR/CONTROLLER
provide a more complex ventilation strategy based on a
mixture of CO
plus temperature measurements and to
2
assign a number of functions, including hierarchy.
For this analog output configuration, the software program
STRATEGY is available, which is part of the User Interface
Program Software package AQS-USP22 used for re-
calibration, change of the measurement range or other
service or set-up purposes.
The switching setpoint and differential of the relay output for
CO
limit monitoring or plant/system ON/OFF control can be
2
adjusted within the measurement range. This output can be
used also as automatic fire threshold to switch off ventilation,
when CO
levels exceed normal limit of e. g. 2500 ppm in
2
case of fire.
FEATURES
• CO
measurement range 0...3000 ppm corresponding
2
to 0...0.3% CO
. Factory-calibrated 0...2000 ppm
2
• Multifunctional unit for temperature and CO
measurement or control
• State-of-the-art Non-Dispersion-Infrared (NDIR)
technology to measure carbon dioxide gas
• Automatic drift correction (ABC-algorithm) based on a
long term evaluation provides typical zero drift check
maintenance-intervals of up to 5 years
• Standard output signals 0(2)...10 Vdc or 0(4)...20 mA
each for CO
and temperature measurement or control
2
• Programmable mixed controller signal output(s)
provides ventilation control strategies to match
exactly the application requirements
• Digital ON/OFF relay output for CO
• RS232 interface for configuration, parameter setting
or data exchange with a PC using Windows 95/98
• User interface program on diskette for service,
recalibration and change of measurement ranges
• Optional with 4-digit LCD display with the selectable
indication of:
• - CO
and room temperature alternating
2
- Error code
- CO
-concentration (ppm)
2
- Temperature (° ° ° ° C)
- Analog Output1
- Analog Output2
-/TEMPERATURE
2
PRODUCT DATA
-
2
limit monitoring
2
EN0B-1023 GE02R0700
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Table of Contents
Related Manuals for Honeywell AQS51-KAM
Summary of Contents for Honeywell AQS51-KAM
- Page 1 If used - Analog Output1 as a controller, each of these outputs can be configured to - Analog Output2 ® U.S. Registered Trademark EN0B-1023 GE02R0700 Copyright © 2000 Honeywell Inc. • All rights reserved...
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Page 2: Technical Data
ACCESSORIES Type Order Number Description Order Number and Temperature Duct Service Software; 3.5” Diskette AQS51-KAM Sensor without LCD display (for changing the sensing range, the AQS-USP22 parametrization and the post calibration) and Temperature Duct AQS61-KAM Sensor with 4-digit LCD display... - Page 3 AQS51/61-KAM COMBINED CO -/TEMPERATURE DUCT SENSOR/CONTROLLER 0...10 Vdc / 2...10 Vdc, impedance 100 Ω Output signal or 0...20 mA / 4...20 mA, load ≤500 Ω Resolution 10mV (10Bits) ±2% of output voltage, +0.1 V D/A conversion accuracy ±2% of output current, ±0.3 mA Analog outputs Protection PTC fuse (auto reset), short-circuit proof...
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Page 4: Operation
0(2) to 10 Vdc or 0(4)...20 mA depending on the adjusted measurement ranges. MOUNTING Directly connected to the analog inputs of Honeywell DDC systems it allows the required flexibility for a wide range of The AQS51-KAM and AQS61-KAM sensor/controllers are... -
Page 5: Mounting Instructions
AQS51/61-KAM COMBINED CO -/TEMPERATURE DUCT SENSOR/CONTROLLER 9. Select the required output ranges by setting the three coding jumpers accordingly to Table 1. The default settings are for 0...10Vdc outputs as indicated by the darker jumper positions in Fig. 5. The outputs have to be configured before the unit is connected to the power supply. - Page 6 AQS51/61-KAM COMBINED CO -/TEMPERATURE DUCT SENSOR/CONTROLLER Jumper Marked Function Current Pin 1 and 2 provides 0(4)...20mA for OUT1 Current/Voltage Voltage Pin 2 and 3 provides 0(2)...10Vdc for OUT1 Current Pin 4 and 5 provides 0(4)...20mA for OUT2 Current/Voltage Voltage Pin 5 and 6 provides 0(2)...10Vdc for OUT2 20 - 100% Pin 7 and 8 provides 2...10Vdc or 4...20mA 9-10...
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Page 7: Led Signals
AQS51/61-KAM COMBINED CO -/TEMPERATURE DUCT SENSOR/CONTROLLER START UP After connected to a 24Vac power supply, the unit is ready for operation. 1. Select on the AQS61-KAM the needed display indication by short-circuiting the MENU zigzag trace with a screwdriver, default setting is ppm and °C alternating. If operational parameters different from from the standard values like converting range or special ventilation strategies are required, use a PC and the Service Software... -
Page 8: Self-Diagnostics
NOTE: If several errors are detected at the same time, the different error code numbers will be added together into one single error code. Home and Building Control Honeywell AG Böblinger Straße 17 D-71101 Schönaich Germany http://europe.hbc.honeywell.com Subject to change without notice. Printed in Germany...