Emerson E2 Instrukcja Operatora Pobierz pdf (Strona 19)

Begin the process by logging on. To do this press the

“USER” in the username field and “PASS” in the pass-

word field. To access the screens shown in

figures 3.17 and 3.18:

1. Press menu to open the Main Menu.

2. Press 7 (System Configuration).

3. Press 7 (Network Setup).

4. Press 1 (Online Status).

5. Press F1 (CST Status).

Figure 3.19 CST Network Screen (Prior to Node

Recovery)

If modules have previously been commissioned they

will be listed on the CST Network Screen. If you are

repairing or replacing an existing module, please refer

to section 5 of this document. If no modules have

been commissioned, the screen should look like

figure 3.19 above.

3.11 Node Recovery

To begin the node recovery process, proceed as

follows:

1. Press F4 (Node Recovery).

2. You will be prompted to enter the number of nodes

to recover. Proceed by entering the number of

compressors that are connected to this rack

controller. They must all be powered up and con-

nected to the E2 via the RS485 network. There

are two other options that can be followed regard-

ing this node recovery process. Refer to Optional

Commissioning Procedures below for additional

information.

3. Press Enter to begin the node recovery process.

The nodes will be found in random order.

After communications have been established with a

module, the E2 screen will update and list the device

as Node Found. Because this process establishes

communications with each device individually, it may

take several minutes depending on the number of

modules present.

3.12 Optional Commissioning Procedures

Option 2: Another procedure is to work with one rack

at a time. To do this, turn the power on to the units that

are on the first rack, leaving the other rack “off”. For

the number of nodes, enter the number of

compressors that are connected to the E2 and have

power. When it is time to recover the nodes of the

second rack, turn off power to the first rack and

energize the second rack. Enter the number of

compressors that are on the 2nd rack that are

communicating to the E2.

Option 3: During the previous node recovery process

options, modules were randomly assigned a node

address as they were found by the E2 on the

communications network. This resulted in randomiza-

tion of the compressor order as they were located and

shown on the CST network screen (figure 3.4).

Option 3 may be used to identify the nodes in the

order that the compressors are located, left to

right. Option 3 does take more time (node recovery

takes approximately 1 1/2 minutes per compressor).

Begin the node recovery process by powering up only

the first compressor on the rack. For the number of

nodes enter “1”. After node number 1 is found, turn off

the power to compressor number 1 and power up only

the second compressor on the rack. Repeat the node

recovery process by entering “1” for the number of

nodes. Continue until all devices have been assigned

a node number—one compressor on at a time, one

node to recover at a time.

3.13 Configuring Applications

Once all of the communicating devices have been

found, the E2 will return to the CST Network Screen

to show a summary of the commissioning results

(refer to figure 3.20 below). Check the list to be sure

that all modules are present. If any are missing, refer

to sections 4.4.2 and A.3 to troubleshoot communica-

tions issues.

AE8-1337 R1

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 70 71

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