Introduction; Application - Danfoss AK-LM 330 Design Manual

Application

AK-LM 330 is a complete monitoring unit with the option of regu-
lation functions via relay switches.
The monitoring unit is used to detect temperature, pressure,
functions etc. in and around appliance cases and cold rooms for
commercial and industrial cooling.
The monitoring unit is equipped with data communication and is
operated via a PC.
Functions
Temperature
• Temperature detection
• Temperature monitoring with alarm function
• Extension of the alarm delay when a defrost signal (DI) is re-
ceived
• Interruption of alarm monitoring when a switch signal (DI) is
received
• Temperature control with relay function
Pressure
• Pressure detection
• Pressure monitoring with alarm function
• Pressure control with relay function
Voltages of 0-10 V
• Voltage detection
• Voltage monitoring with alarm function
• Voltage monitoring with relay function
On/Off signals
• Detection of switch signals
• Alarm function with delay + relay function, if applicable
• The switch signal can be inverted
• Hour counter for On time
• Counter for number of changes
Pulse signals
• Registration of electricity, water, gas, etc.
• Energy reading
• Energy reading in a set synchronisation period
• Energy reading in a period between synchronisation pulses
• Receiving synchronisation signal
Alarm relay
• Two alarm relays that are enabled on different alarm priorities
Display
• 4 display connections for read-out of the signals received
Data communication
• Connection to system manager or gateway
• Monitoring and data collection
• Customised alarm texts
SW = 1.4x
AK-LM 330

1. Introduction

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