Danfoss Prosa Telemetry Solution

Introduction

This user guide is intended for connecting the Danfoss Prosa Modbus telemetry solution with Optyma cold room controls (AK-RC 111, 113, 251, 204B, 205C, 305W) using an iPhone or Android smartphone. The installer should be trained and familiar with accessing and changing parameters on the Optyma cold room control. Parameter lists are found in the Optyma control installation guide.

Note: If the Prosa telemetry device location is changed, open the ProsaLink app, go to 'Tools', then 'Disconnect equipment' and 'Delete equipment' before moving the device.

Prosa PR-SC4 Modbus Functionality

The ProsaLink app mirrors Optyma cold room control alarms. Ensure relevant parameters are tested in the controller, including evaporator fan, door switch, high/low alarms, and alarm delays. Test alarm functions on the app after initial setup.

Note on Default Alarms:

• AK-RC 111/113: Default alarm delay ('ald') is 120 min. High temp alarm ('A2') is +99°C, low temp alarm ('A1') is -45°C.
• AK-RC 251, 204B, 205C, 305W: Default alarm delay ('A5') is 30 min. High temp alarm ('A1') is +99°C, low temp alarm ('A2') is -50°C.

To test alarm functionality, temporarily set alarm parameters outside trigger conditions and check 'Live Data' in the app. Alarms generated on the cold room control will appear on the ProsaLink app approximately 5 minutes later.

Note: Installers are responsible for checking, adjusting, and confirming application-specific control parameters.

App Requirements: Ensure your smartphone meets requirements (e.g., Android v5.0+ or iOS 11+). Enable Bluetooth and app notifications. Sharing location is required for device geolocation.

Download the app at: https://prosa.link/install

Subscription: Service subscription charges apply. A free 1-month trial can be selected during initial setup. The bill payer will receive email notifications to subscribe. End-user credentials must be entered during setup if the end user is paying.

Subscription Status Check: Press the 'IoT enabler' icon on the ProsaLink app dashboard. 'Active' (green) indicates the subscription is current; 'Disabled' (red) means the bill payer needs to subscribe.

Installation

Items within the ProsaLink kit

The ProsaLink kit includes:

• Modbus wiring connector block (Green)
• Prosa Modbus device 300B4326
• 2 pieces self-adhesive velcro
• Antenna
• 230 V power supply connection (White)
• Protection box (gasket must be installed for IP rating)
• Protection box lid, gasket, and screws

Use the velcro to secure the Prosa device to the bottom of the protection box. The device can be gently pulled from the velcro for access.

Device LEDs

The Prosa Modbus device has two LEDs:

• Red LED: Indicates Modbus communication status. Solid red means the device is powered on and communicating with the controller. A fast blink indicates the device has lost communication.
• Green LED: Indicates communication to the cloud. Solid green means GSM signal and transmission to the server are OK. A blink indicates GSM signal is OK, and transmission is in progress. Off means no or poor GSM signal.

Power Cable and Wiring

For AK-RC 111, 113:

Field/Prosa link kit wiring must be done with the 230 V power switched off. Connect the 230 V fused power supply to the white connector plug on the Prosa device.

Diagram Description: The diagram shows a 100-240V AC power input for the Prosa device. It also illustrates wiring connections for panels using Modbus network and/or Alarm/Aux relays directly on electronic card clamps.

Connecting 2-wire Modbus (Optyma to Prosa):

Diagram Description: This diagram illustrates connecting a 2-wire Modbus cable between the Optyma cold room control and the Prosa device. It shows the Prosa device terminals (A+, B-) and the Optyma control terminals (Modbus A, Modbus B). The example uses red for A and black for B wires.

Parameter Settings for AK-RC 111, 113:

• Variable 'bdr': Set to 7 (default in 101/103).
• Variable 'Ad': Set to 1.
• Variable 'AU': Set to 7 (only for 101/103).

Connect the 2-wire Modbus cables, ensuring polarity is correct (e.g., Red wire to A, Black wire to B on both ends).

For AK-RC 251, 205B, 205C, 305W:

Diagram Description: This section shows power cable connections for various AK-RC models (204B, 251/305W, 205C) and the Prosa device, indicating 100-240V AC or 230V AC power inputs.

Connecting 3-wire Modbus (Optyma to Prosa):

Diagram Description: This diagram illustrates connecting a 3-wire Modbus cable between the Optyma cold room control and the Prosa device. It shows Prosa device terminals (A+, B-, GND) and Optyma control terminals (RS485, GND). The example uses white, red, and black wires.

Parameter Settings for AK-RC 251, 204B, 205C, 305W:

• Variable 'b20': Set to 1 (Modbus address).
• Variable 'b21': Set to 1 (Communication speed, 19200 baudrate).

Installation Process

For AK-RC 111, 113:

1. Complete all field, power, and Modbus wiring. Connect the antenna.
2. Switch on power to the Optyma control and Prosa device.
3. Set Optyma parameters: 'bdr' to 7 and 'Ad' to 1 to enable communication.
4. For older AK-RC 101/103 models: Turn off power, remove the white plastic cover, move the plastic link jumper to terminals 3-2 (default is 1-2), and set parameter 'au' to 7. The control type is on the data plate.
5. Check default parameter values in the Optyma control are set to site-specific requirements.
6. Observe the red and green LEDs on the Prosa device. Both solid LEDs indicate readiness for smartphone association. The red LED indicates Modbus communication; it flashes initially then turns solid. The green LED indicates cloud connection; it blinks on/off initially then turns solid green once established. Blinking green can also indicate signal variation.
7. Device signal strength can be checked in the ProsaLink app under 'Data' widget -> 'Network status'.
8. Ensure both red and green LEDs are solid before attempting smartphone association. This process typically takes a few minutes.

LED Meanings:

• Green LED: Off = No/poor GSM signal. On = GSM signal and transmission OK. Blink = GSM signal OK, transmission in progress.
• Red LED: Off = Device powered off. On = Device powered on and communicating. Blink = Device powered on but not communicating. Fast blink = Device powered on but lost communication.

For AK-RC 251, 205B, 205C, 305W:

1. Complete all field, power, and Modbus wiring. Connect the antenna.
2. Switch on power to the Optyma control and Prosa device.
3. Set Optyma parameters: 'b20' to 1 (Modbus address) and 'b21' to 1 (Communication speed).
4. Check default parameter values in the Optyma control are set to site-specific requirements.
5. Observe the red and green LEDs on the Prosa device for readiness (same as above).
6. Device signal strength can be checked in the ProsaLink app.
7. Ensure both LEDs are solid before attempting smartphone association.

LED Meanings: (Same as above)

Configuration

App Requirements and Setup

Ensure your smartphone meets requirements (Android v5.0+ or iOS 11+). Enable Bluetooth, app notifications, and location sharing.

Download the ProsaLink App from Google Play or the App Store. Create a ProsaLink user name and password if you are a new user.

Installation Steps:

1. Complete wiring to the Optyma control before associating the PR-SC4 telemetry device with a smartphone.
2. Connect the Antenna.
3. Connect the 230 V fused power supply to the Prosa and Cold room control.
4. Connect the 2-wire Modbus (+ & -) between the Optyma control and Prosa device as described previously. Switch on power and verify green and red LEDs are solid.
5. Open the ProsaLink app and select 'Add new device'. The phone's camera will open.
6. Scan the QR Code on the Prosa device to automatically upload the serial number and unlock pin. If the camera fails, manually enter the 15-digit serial number and unlock code.
7. Press 'Confirm' on the app screen.
8. 'Establish a device connection': Bluetooth connection and firmware update status should be automatically ticked. If not, leave the app open.
9. Press 'Next' to view the 'telemetry mobile network status' page, showing device signal strength. 'Registered to 4G' and 'Prosa cloud connection state' should be ticked.
10. Press 'Next'.
11. The scanned device will appear on the 'Search destination site' menu.
12. Press the device name.
13. On the 'Equipment nearby' screen, press 'Add new equipment'.
14. On the 'Equipment details' page, enter the equipment name (e.g., 'frozen food cold room') and type (e.g., 'cold room', 'display cabinet'), then press save.
15. 'Test control board connectivity' page will indicate the controller type. Press 'Next'.
16. Select who will pay for the telemetry service subscription ('Me?' or 'Somebody else'). If 'Somebody else', enter their email address.
17. 'Installation procedure complete': Check service subscriber details and press 'Close'.

ProsaLink App Dashboard

The asset will now be visible on the user's ProsaLink dashboard. The name of the cold room or asset is displayed; it can be renamed via the 'Info' tab.

HACCP Configuration: If 'HACCP not configured' is displayed, manually enter HACCP data (e.g., Frozen Food default is -18 to -21°C). Data is recorded hourly and can be exported. HACCP data is for logging purposes only and is not connected to temperature alarms.

Temperature data logging to the cloud begins approximately 30 minutes after setup.

Moving the Device: Use the 'Tools' widget to 'Disconnect equipment' and 'Delete equipment'.

Notifications: Configure app and email notifications in 'My Account' -> 'Notifications'. Push notifications are enabled by default.

Live Data vs. Data from Cloud: 'Live data' is available when near the device via Bluetooth. 'Data from cloud' is accessed when away from the equipment.

Testing: Generate a false alarm by temporarily adjusting alarm configurations to confirm alarms are activated and notifications are received.

Power Loss: The Prosa system will send a 'no sign of life' alarm if the device loses power or cannot transmit data for 45-60 minutes.

App Sections Explained:

• Sites: Lists assets or cold rooms associated with your account.
• IoT enabler installation: Shows devices visible via Bluetooth. 'Associated' devices are configured.
• Add new device: To add a new Prosa device.
• Accounts Manager: For managing permissions and access for additional users.
• My account: Review personal data, change password, manage notifications, privacy policy, or log out. Subscription module is here.
• App settings: Select language, units (km/miles), and default temperature (Celsius/Fahrenheit).
• Notification center: View all account alarms.
• Logout: Exit the ProsaLink app.

Account Management Analogy: An installer purchases hardware, associates the device with a smartphone, and enters credentials. The end user can add other users via 'Account management'. The installer cannot add/remove users unless they own the account.

ProsaLink App Dashboard Navigation

The app interface provides access to various data and settings:

• Info: Contact and location details of the end user/account owner.
• Equipment Details: Type and name of the equipment.
• Sensor Data: Evaporator/Defrost sensor temperature and Internal Temperature. A HACCP traffic light (Green OK, Red High temperature) is displayed. 'HACCP' below indicates configuration.
• Live Data: Accessed via Bluetooth when close to the equipment.
• Data from Cloud: Accessed when away from the equipment.
• Asset Picture: Displays a picture of the asset if added.
• Active Alarms: Shows currently active alarms.
• Closed Alarms: Stores past alarms. Pressing the symbol shows the alarm log.
• Graphical Data: Expandable graphs for evaporator/defrost sensor and internal temperature.
• Info Tab: Displays device name, code, and address. Asset can be renamed. Code and manufacturer code are not used for SC4 Modbus.
• Data Tab: View site data from the cloud or live data via Bluetooth.
• IoT enabler Tab: Check service status (active/disabled), subscription status, model number, device serial number, and firmware version.
• Tools Tab: Used for relocating equipment (disconnect and delete).

Alarm Log: Displays alarm type, date, and time. 'Alarm Management' allows closing or managing alarms.

HACCP Data View: Access historical HACCP data. The dashboard provides a quick reference view.

Data Views and HACCP

Door Switch Status: Shows the percentage of time the door switch was active in the last 12 hours.

Compressor Status: Shows the percentage of time the compressor relay was active in the last 12 hours.

Info Tab: Adjust asset name. Code and manufacturer code are not relevant for SC4 Modbus.

IoT enabler Widget: Displays subscription status. Red indicates an expired or inactive subscription; green indicates active service. Device serial number and firmware version are also shown.

Tools Widget: Allows disconnecting and deleting equipment.

HACCP Tabular Data View:

Use the 'Spanner' symbol to view and modify HACCP settings and product type. Change data views (hourly, daily, 24 hours, last week, last month, custom). Orange color indicates a defrost cycle. View hourly temperature log intervals, minimum, maximum, and average temperatures. Export HACCP reports to Excel.

Note: HACCP data is recorded hourly and is for temperature monitoring and data logging only. System alarms are mirrored from the cold room controller. Data is collected every 5 minutes and transmitted to the cloud every 20 minutes.

Prosa Device Signal Strength

Signal strength can be checked via 'Live Data' (Bluetooth connection) or 'Data from Cloud' (no Bluetooth connection).

• Data from Cloud: Displays signal strength in dBm. Green OK, Amber, or Red indicates signal status.
• Live Data: Shows real-time data and alarms from the Optyma control via Bluetooth.

Signal Strength Indicators: A signal strength higher than -93 dBm is barely acceptable, while -105 dBm is insufficient for transmission. Signal strength varies based on proximity to towers and obstructions.

If the antenna needs relocation, a longer antenna can be purchased.

Ordering

Model: PR-SC4K Modbus

Description: Telemetry Kit (full kit)

Code no.: 300B4327

For aftersales support, subscription, and account questions, contact: support.prosa@danfoss.com

Access the PC version of the Prosa IoT portal at: https://vbx.prosa.com/vebox/login?logout. The PC version also allows finding earlier HACCP data.

Installer Checklist

Before handing over to the customer/end user/subscription bill payer/account owner, verify the following:

• Application-specific alarm parameters and time delay adjusted on the Optyma cold room control.
• HACCP min/max temperatures set, and tabular data logging enabled.
• Digital inputs connected to the Optyma control configured and tested (alarms should mirror on the app).
• Account owner/end user credentials entered into the app during initial setup.
• App (push) and email notifications enabled for installer and end user.
• A false alarm triggered to verify alarm data is emailed to the customer.
• Connected assets are clearly labeled, matching on-site names for easy identification by the end user (e.g., 'Fruit and Veg chiller').