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 speci€cally 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
Monitoring unit, type PR-OCTO
Product speci€cation
Layout
Figure 1 and Figure 2 illustrate the layout of the PR-OCTO device.
Figure 1: Side A
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R |
GGreen LED: Status of the mobile connection and the connection with the Alsense Platform.
RRed LED: Status of the power supply and the communication with the electronic thermostat.
See Table 1 for details on the operation.
Figure 2: Side B |
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P |
Power supply connector: 100 – 240 V ~ |
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Optional connector: the RS485/RS232 |
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communication port for suitable thermostat. |
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COMM connector: The TTL communication port |
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with the electronic thermostat. This is also the |
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connector for the temperature probe inputs. |
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See Connections with an electronic controller for details on the connectors.
Table 1: LED operation details
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 |
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© Danfoss | Climate Solutions | 2022.03 |
AI374325612722en-000201 | 2 |
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
Manufacturer |
Models |
Danfoss |
ERC111, ERC112, EETa |
Eliwell |
EWPLUS400, EWPLUS961, EWPLUS974, EWPLUS974 Smart, EWPLUS978 |
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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 |
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A |
Electronic Thermostat |
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B |
PR-OCTO |
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C |
COMM cable |
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D |
This distance has to be at |
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least 5 cm in case the power |
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A |
C |
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supply is not double |
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insulated. |
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100 – 240 V AC ~ |
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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.
Standard fast-on |
Easy plug double fast-on (for indirect mating) |
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Lumberg 3611 02 K1
© Danfoss | Climate Solutions | 2022.03 |
AI374325612722en-000201 | 3 |
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