Danfoss PR-OCTO Data sheet
Data Sheet
Monitoring unit
Type PR-OCTO
IoT Enabler for remote control and tracking of refrigeration equipment
The PR-OCTO device is an IoT Enabler
specically designed for cooling applications
like bottle coolers, ice cream cabinets and other
refrigeration type of equipment. This Enabler
allows connectivity and access to the Alsense™
Cloud solutions from Danfoss.
The OCTO can operate connected to existing
electronic controllers, gathering the data from
the controller using a communication port or as
a stand alone device, using the 4 available
inputs to gather temperature and status
information. Using the embedded modem, the
Bluetooth link and the WiFi capabilities of the
device, it can provide multiple options of
communications with the cloud and very
accurate positioning.
AI374325612722en-000201
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Danfoss
80G8251
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Green LED: Status of the mobile connection and
the connection with the Alsense Platform.
Red LED: Status of the power supply and the
communication with the electronic thermostat.
Danfoss
80G8252
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POC
Power supply connector: 100 – 240 V ~
Optional connector: the RS485/RS232
communication port for suitable thermostat.
COMM connector: The TTL communication port
with the electronic thermostat. This is also the
connector for the temperature probe inputs.
RED LED OFF
The device is not correctly powered.
RED LED blinking
The device is powered and the communication with the electronic thermostat is not established yet.
RED LED ON
The device is powered and the communication with the electronic thermostat is correctly established.
RED LED fast blinking
The device is powered while the communication with the electronic thermostat has been interrupted.
GREEN LED OFF
The modem is not running
GREEN LED fast blinking
The modem is not registered to the network
GREEN LED blinking
The modem is registered to the network
Monitoring unit, type PR-OCTO
Product specication
Layout
Figure 1 and Figure 2 illustrate the layout of the PR-OCTO device.
Figure 1: Side A
See Table 1 for details on the operation.
Figure 2: Side B
See Connections with an electronic controller for details on the connectors.
Table 1: LED operation details
© Danfoss | Climate Solutions | 2022.03 AI374325612722en-000201 | 2
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A
B
100 – 240 V AC ~
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Danfoss
80G8253
ABCDElectronic Thermostat
PR-OCTO
COMM cable
This distance has to be at
least 5 cm in case the power
supply is not double
insulated.
Manufacturer
Models
Danfoss
ERC111, ERC112, EETa
Eliwell
EWPLUS400, EWPLUS961, EWPLUS974, EWPLUS974 Smart, EWPLUS978
Standard fast-on
Easy plug double fast-on (for indirect mating)
Lumberg 3611 02 K1
Monitoring unit, type PR-OCTO
Compatibility
The PR-OCTO device gives the possibility to execute the lock command and to collect the diagnostic information
only in conjunction with an electronic thermostat.
The current version of the PR-OCTO includes the compatibility with the thermostats listed in Table 2.
Table 2: Compatible electronic thermostats
List of compatible controllers is updated frequently, please consult your Danfoss representative for controllers not
included.
Connections with an electronic controller
Figure 3: Connection to an electronic controller
The PR-OCTO requires two connections, one for the power supply, the other with the electronic thermostat.
The power supply must be shared with the electronic thermostat: the PR-OCTO must be powered on only when the
thermostat is also powered on. If the PR-OCTO is powered on when the thermostat is o, a “Controller
communication failure” alarm is raised after 60 minutes.
NOTE:
Neither the cables nor the connectors are included in the PR-OCTO package.
For the POWER SUPPLY connector of the PR-OCTO, either two standard fast-on connectors or one connector with
screw terminal can be used. In Table 3, illustrates the Lumberg 3611 02 K1, an easy plug connector with lift clamp
and protection against misplacing and fast assembling. Neither the easy plug connector nor the standard fast-on
connectors are included in the PR-OCTO package.
NOTE:
If the power supply cable is not double insulated, it must be physically separated from the COMM cable.
Table 3: Two possible PR-OCTO terminations for the power supply cable.
© Danfoss | Climate Solutions | 2022.03 AI374325612722en-000201 | 3
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