APC ACRA100 Installation Manual download pdf (Page 31)

23Pumped Refrigerant System Operation and Maintenance

Group Configuration

Group settings determine which modules are available in each group and how the groups should operate.

Modify a Cooling Module (CM) ID

Path: Main > Cooling Modules > Select CM > Configuration > Modify CM ID

RDU ID.

The unique identification number of the RDU.

Group #. Select a new Group number.

CM #. Select a new CM number.

Assign CM. Select to apply the changes to the selected CM. Once selected, the confirmation screen

comes up. Select Yes or No.

View the groups

Path: Main > Groups

Select Group.

Select the group you want to view.

CM List. From the group number you selected, you can view the CMs by ID number.

Number of Units. Select the number of CMs you expect to be in the group. The Group

Communications Loss alarm is initiated if the CMs detect less or more CMs than this value.

Unassign CMs

Two menu paths are available to unassign cooling modules.

1. From this menu, select the CM ID to unassign. Press the

ENTER key and Select Ye s.

Path: Main > CMs in Network > All Assigned CMs

2. From this menu, press the ENTER key and select.

Path: Main > Cooling Modules > Select CM > Configuration > Unassign CM

Configure Modbus

Path: Main > Configure Modbus

Modbus.

Enable or Disable the Modbus communication protocol.

Target Id. Each Modbus device must have a unique target identification number. Enter a unique number

from 1 to 247 for the RDU.

Baud Rate. 9600 bps.

CAUTION

HAZARD TO EQUIPMENT OR PERSONNEL

All work must be performed by American Power Conversion (APC

) by Schnieder Electric

authorized personnel.

Failure to follow these instructions can result in death, serious injury, or equipment

damage.

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APC ACRA100 Installation Manual Page 31