Emerson E2 operation manual RMS Asset, RMS Scale, Log Information, Device Constraints

11.25Refrigerant Monitoring System (RMS)

The RMS enables the E2 ability to measure the refrig- erant used to add, remove and repair an asset that has a refrigerant charge. RMS is available for E2 versions 3.01 and above. The RMS comes with two components that are installed together, the RMS asset and the RMS scale. A total of 99 RMS applications can be supported by the E2. The RMS is a licensed application. For licensing instruc- tions, refer to the software licensing section (see Section 10.15, License Management).When an RMS Asset is licensed, this automatically includes one RMS Scale.

11.25.1 RMS Asset

There will be one E2 RMS asset instance for each

refrigerant charged asset. A refrigerant-charged asset can include HVAC, Rack, and Small Appliance.

The RMS asset can perform the following functions;

•Charge Asset - The asset will be filled with refrig- erant. The Cylinder Accumulated Weight and the Total Accumulated Weight will be reset to 0.0. If an RMS Scale is not present, manually input the end- ing weight and the starting weight of the cylinders. (This applies during charging or reclaim, if more than one cylinder is needed.)

(Note to cancel charging, press Enter from the Sta- tus screen and select Application Commands, 3. Close Ticket. Enter a reason in the Tech Comment field and press F10 to cancel the charge.)

•Reclaim Refrigerant - The refrigerant will be removed from the asset. The Cylinder Accumulated Weight and the Total Accumulated Weight will be reset to 0.0. If an RMS Scale is not present, manu- ally input the ending weight and the starting weight of the cylinders. (This applies during charging or reclaim, if more than one cylinder is needed.) (Note to cancel charging, press Enter from the Sta- tus screen and select Application Commands, 3. Close Ticket. Enter a reason in the Tech Comment field and press F10 to cancel the charge.)

•Change Cylinder/New Cylinder - The container of refrigerant will be removed and replaced with a new one. If an RMS Scale is not present, manually input the ending weight and the starting weight of the cylinders. (This applies during charging or reclaim, if more than one cylinder is needed.) (Note to cancel charging, press Enter from the Sta- tus screen and select Application Commands, 3. Close Ticket. Enter a reason in the Tech Comment field and press F10 to cancel the charge.)

•Close Ticket - Select to confirm charging, reclaim- ing or changing refrigerant. An ending weight, and the total accumulated weight will be displayed. If an RMS Scale is not present, manually input the ending weight and the starting weight of the cylin- ders. Close Ticket will open the Charge Asset or Reclaim Refrigerant Ticket screen depending on which action is being performed. If adding or removing refrigerant, the refrigerant ticket screen should be filled out. Press F1 to send.

•Cancel Ticket - Select to cancel the process. An entry for a reason for cancelling the ticket will be required. An entry will be written to the log.

•Refrigerant Ticket - When changing, adding, or removing refrigerant, the RMS Ticket screen for charges or reclaims (depending on whether refriger- ant is added or removed) is filled out. Press F1 to send.

11.25.2 RMS Scale

The RMS scale used for weighing the refrigerant tank for a specific asset. The RMS scale communicates using MODBUS. The RMS scale will appear as a device in the device summary list and will be consistent with other devices and their online/offline status.

11.25.2.1 Device Constraints

The RMS scale communicates using the ASCII MOD- BUS protocol. It can exist on the same MODBUS route as RTU MODBUS devices as long as the baud rate, and serial settings are the same ( # of bits, Parity, # of Stop Bits). On a mixed network (RTU and ASCII MODBUS) address 58 is not supported. 58 is the ASCII value for a “:”

11.26Detailed Setpoint Change Logging

Detailed Setpoint Change Logging stores in a log any setpoints that change, when the setpoint was changed, what the original value was, and what the value was changed to.

The log is always enabled except for start-up and restore and cannot be disabled by the user. This data is retrieved and displayed on the E2 front panel.

11.26.1 Log Information

The following information will be stored for detailed setpoint change logging:

•Time Stamp – the time and date of the setpoint change in local time.

Refrigerant Monitoring System (RMS) Software Overview • 11-57