Connections - Danfoss AK-LM 330 Design Manual

3

Connections

Here is a survey of the possible connections. The texts can be read
in context with the table in point 4.
Analog inputs
Temperature sensors
Temperature sensors that can be used by thermostats for
monitoring, relay control and alarm functions (Saux1 - Saux10).
Voltage signal
Voltage signals that can be used for monitoring, relay control and
alarm functions (Volt input 1-5).
Pressure transmitters
Pressure transmitter signals that can be used by pressostats for
monitoring, relay control and alarm functions (Paux1 - Paux5).
On/Off-inputs
Contact function (on an analog input)
or
Voltage signal (on an extension module)
On/off signals that are used for monitoring, relay control and
alarm functions (DI1-DI16).
• Defrosting signals that are used to extend alarm delays for
thermostats.
• Appliance cleaning signal to stop alarms from the thermostat.
• Signal to reset the alarm relay (mute function).
Example
• Temperature reading with temperature shown on the display
(Saux1)
• Temperature reading (Saux2) and one 230 V signal for activation
during defrosting so that the alarm delay is postponed (DI1) and
one 230 V signal detecting that the appliance is not in operation
(DI2).
• Temperature reading with relay function (Saux3).
• Voltage reading (U1).
32 RS8FR302 © Danfoss 2015-08
Pulse inputs
• Energy reading
• Synchronisation
On/off outputs
Relay outputs
• Thermostat functions 1-10
• Voltage signals 1-5
• Pressostat functions 1-5
• Digital input functions 1-16
• Alarm relays 1-2
• Voltage reading with relay function (U2).
• Pressure reading to 12 bar (Paux).
• Pressure reading with relay function to 34 bar (Paux2).
• 230 V signals from compressor monitoring (DI3 and DI4).
• Pulse signal from gauge unit (E).
• Alarm relay (AL) ("mute" of alarms takes place from the external
display).
Data from this example is used on the next page.
The result is that the following modules should be used:
• AK-LM 330 Monitoring unit
• AK-XM 102B extension module with digital high voltage inputs
• AK-XM 107A extension module with pulse inputs
• EKA 164B
AK-LM 330