Emerson E2 Manuel de l'opérateur télécharger pdf (Page 14)

This will open the suction group setup screen as

shown below in figure 3.6:

Figure 3.6 Suction Group Setup Screen

From this screen you can edit the name of the suction

group, select the control type, and enter the number

of stages. The number of stages can be determined

as follows. A compressor with an unloader will

account for two stages. A compressor without an

unloader will count as one stage.

To continue the suction group setup process:

1. Press F2 (Next Tab) until the Comp Setup screen

is displayed.

2. Under Type, select Comp for compressor or Unld

for unloader.

3. Under HP/Amps enter the compressor horsepow-

er for each stage.

4. If run proofing is desired, select Yes under Proof.

Note: For a compressor equipped with an unloader

the horsepower should be divided between the

compressor and unloader stages. A compressor with

an unloader can be considered to be two different

compressors from a control standpoint. When the

suction group status screen shows the unloader to be

“off” and the comp (compressor) to be “on”, the

compressor is running “unloaded”, i.e. the unloaded

portion of the compressor is not contributing to gener-

ation of capacity (this is confusing since the unloader

solenoid in this case is actually “on”). If the comp and

unloader are both “on”, the compressor is running at

full capacity.

Sample Rack with Intelligent Store™ Discus® Compressors

- 25° Suction - 15° Suction

4DL3A150L-TSK

04I35625R

3DRHA100E-TFD

04I00300R

4DS3A220E-TSK

04I35631R

3DRHA100E-TFD

04I00439R

2DC3-050E-TFD

04I00435R

Subnet: 15

Node: 2

Subnet: 15

Node: 5

Subnet: 15

Node: 4

Subnet: 15

Node: 3

Subnet: 15

Node: 1

RACK1COMP1 RACK1COMP2 RACK1COMP3 RACK2COMP1 RACK2COMP2

Comp1

Address

Compressor

Name

Stages

Comp2

Comp3

(unloader)

Comp4

Comp5

(unloader)

Comp1

Comp2

(unloader)

Comp3

Figure 3.7 Suction Group Setup Screen (Comp Setup)

AE8-1337 R1

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 70 71

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Emerson E2 Manuel de l'opérateur Page 14

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