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Aeroqual AQM60 User Guide
1.11. Electrical Connections
RS485 Bus
The two wire RS485 bus connections are made using 20 cm CAT5 cables between the sensor modules. The
last module on the bus also has a blue termination dongle fitted.
The termination dongle should not be
removed.
12 VDC Power Bus
All modules inside the AQM60 operate from the 12VDC power. The power is supplied by a daisy chain of
black and red cables. A relay is activated by the Control Module on/off button to allow the sensor bus to be
powered.
Status LED
Each module includes a status LED which indicates that the electrical status of the module is functioning
correctly. It does not relate the calibration status of the module.
a) Continuous on indicates correct electrical functionality
b) Slow flash (1 second) indicates warm up period
c) Fast flash (0.2 seconds) sensor failure
d) LED not on indicates no power to module.
Controller
GTM
Power supply one
12V
Compressor
Module
power
relay
TMS
module
gas
module
gas
module
Heater
power
relay
T
M
S
h
e
a
te
r
12 V Power
Signal
Power supply two
12V
Mains Power
Mains power in
Fan
relay
T
M
S
f
a
n
s
TMS =
thermal
management system
Controller
GTM
Power supply one
12V
Compressor
Module
power
relay
TMS
module
gas
module
gas
module
Heater
power
relay
T
M
S
h
e
a
te
r
12 V Power
Signal
Power supply two
12V
Mains Power
Mains power in
Fan
relay
T
M
S
f
a
n
s
TMS =
thermal
management system
Controller
GTM
Power supply one
12V
Compressor
Module
power
relay
TMS
module
gas
module
gas
module
Heater
power
relay
T
M
S
h
e
a
te
r
12 V Power
Signal
Power supply two
12V
Mains Power
Mains power in
Fan
relay
T
M
S
f
a
n
s
TMS =
thermal
management system
Controller
GTM
Power supply one
12V
Compressor
Module
power
relay
TMS
module
gas
module
gas
module
Heater
power
relay
T
M
S
h
e
a
te
r
12 V Power
Signal
Power supply two
12V
Mains Power
Mains power in
Fan
relay
T
M
S
f
a
n
s
TMS =
thermal
management system
Controller
GTM
Power supply one
12V
Compressor
Module
power
relay
TMS
module
gas
module
gas
module
Heater
power
relay
T
M
S
h
e
a
te
r
12 V Power
Signal
Power supply two
12V
Mains Power
Mains power in
Fan
relay
T
M
S
f
a
n
s
TMS =
thermal
management system
Summary of Contents for AQM60
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