Emerson E2 Manuel de l'opérateur télécharger pdf (Page 22)

3.16 Remote Reset

In the event of an oil pressure or discharge tempera-

ture lockout a manual reset is required to restart the

compressor. This can be accomplished by pressing

the reset button on the front of the Intelligent Store™

Discus® module or by remotely resetting the module

through the CPC UltraSite™ monitoring software

program. In order to enable this remote reset option,

follow these steps:

1. From the CST Setup Screen shown in figure 3.23,

Press F2 (Next Tab) to access the Alarm Tab.

2. Change the selection next to Oil Lock Reset to

“Enabled”. The screen should look like figure 3.27

below.

3. Repeat this process for each module.

Figure 3.27 CST Setup Screen (Alarm Tab)

3.17 Failsafe Operation

As with other devices controlled by the E2, each

module may be programmed to operate independent-

ly in the event that communications are lost. The

normal modes of operation are compressor ON or

compressor OFF. In the case where the module is set

for failsafe OFF the compressor will not run until

communication has been re-established with the E2.

In the case where the module is set for failsafe ON,

the compressor will continue to run until communica-

tion has been re-established with the E2. In this case

all compressor protection provided by the module will

still function as needed.

Each module is sent from the Emerson Climate

Technologies, Inc. factory with the failsafe set “ON”.

To check this setting or to program the module to fail-

safe OFF, follow these steps:

1. From the CST Setup Screen shown in figure 3.23,

press F2 (Next Tab) until the More tab is high-

lighted.

2. Press F4 (Look Up) to change the failsafe mode.

3. Repeat this process for each module.

Figure 3.28 Failsafe Setup Screen

3.18 Suction Group Setup

In order for the E2 to control compressor operation

the proper input and output values must be entered

into the system. This is accomplished by creating a

suction group application in the rack controller.

Programming of the suction group will depend upon

the system as well as the options desired by the end

user. The following section covers the steps neces-

sary to setup the sample rack shown in figure 3.21.

From the Main Menu:

1. Press 6 (Add / Delete Application).

2. Press 1 (Add Application).

3. Press F4 (Lookup) and select Suction Group from

the option list.

4. Enter the number of suction groups controlled by

this E2.

5. When prompted by the E2 to edit the application,

Press Y for yes.

This will open the suction group setup screen as

shown on the next page in figure 3.29:

AE8-1337 R1

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 70 71

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Emerson E2 Manuel de l'opérateur Page 22

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