Emerson VSG & VSSG Instructions de montage

VSG & VSSG

Single Screw Compressor

Software Manual

Compact Logix PLC

Important Note

Before applying power to the control panel, all wiring to the panel shall be installed per NEC. Specifically

check for proper voltage and that the neutral is grounded at the source. An equipment ground should also

be run to the panel.

*See Wiring Instructions and Diagrams before proceeding.

NOTES:

• Before start-up you need to enter all system values and options, see section on Setpoint Values.

• Power circuits entry on left side of enclosure

• Instrument circuits entry on right side of enclosure

Electrical installation shall be completed by a licensed electrician qualified in field wiring

located in Class 1 Div 2 Hazardous Locations per the National Electric Code (NEC).

Important Note .................................................................................................3

VSG STANDARD VILTER WARRANTY STATEMENT ............................................... 6

Operational Flow Charts ....................................................................................7

Main Screen.....................................................................................................15

Log On Screen ................................................................................................. 16

Set Up Screen ..................................................................................................17

Vilter Only Screen............................................................................................19

Menu Screen ...................................................................................................20

Compressor Alarm and Trip ............................................................................. 24

Compressor Control Setpoints......................................................................... 27

Additional Compressor Controls...................................................................... 32

Compressor Setpoints and Alarms................................................................... 34

Motor Speed Setpoints & Control Screen ......................................................... 35

Diagnostics Force Output ................................................................................ 37

Instrument Calibration ....................................................................................38

Oil Mixing Valve............................................................................................... 43

Unit Start Screen (Start / Stop Logic)................................................................47

Device Names..................................................................................................50

Calibration Procedure of Optical Actuators...................................................... 51

Calibration Procedure of Optical Actuators...................................................... 52

Calibration Procedure of Optical Actuators...................................................... 53

Installation Instructions For Replacement Of Optical Actuator ......................... 54

Slide Valve Actuator Theory of Operation ........................................................ 55

Slide Valve Actuator Troubleshooting Guide .................................................... 56

Slide Valve Actuator Troubleshooting Guide .................................................... 57

Slide Valve Actuator Troubleshooting Guide .................................................... 58

Command Shaft Rotation and Travel................................................................ 59

Safety Failure Message .................................................................................... 60

Safety Failure Message .................................................................................... 61

Safety Failure Message .................................................................................... 62

Version Screen.................................................................................................63

Trend Charts....................................................................................................64

Trend Charts....................................................................................................65

Captured Data at Shutdown ............................................................................ 67

Appendix A: Slide Valve Actuator Troubleshooting Guide

Appendix B: Drawings and Parts Lists

Table of Contents

VSG STANDARD VILTER WARRANTY STATEMENT

Seller warrants all new single screw gas compression units and bareshaft single screw compressors

manufactured by it and supplied to Buyer to be free from defects in materials and workmanship for a period

of (a) eighteen (18) months from the date of shipment or (b) twelve (12) months from the date of

installation at the end user’s location, whichever occurs first.

If within such period any such product shall be proved to Seller’s satisfaction to be defective, such product

shall be repaired or replaced at Seller’s option. Such repair or replacement shall be Seller’s sole obligation

and Buyer’s exclusive remedy hereunder and shall be conditioned upon (a) Seller’s receiving written notice

of any alleged defect within ten (10) days after its discovery, (b) payment in full of all amounts owed by

Buyer to Seller and (c) at Seller’s option, Buyer shall have delivered such products to Seller, all expenses

prepaid to its factory. Expenses incurred by Buyer in repairing or replacing any defective product

(including, without limitation, labor, lost refrigerant or gas and freight costs) will not be allowed except by

written permission of Seller. Further, Seller shall not be liable for any other direct, indirect, consequential,

incidental, or special damages arising out of a breach of warranty.

This warranty is only applicable to products properly maintained and used according to Seller’s

instructions. This warranty does not apply (i) to ordinary wear and tear, damage caused by corrosion,

misuse, overloading, neglect, improper use or operation (including, without limitation, operation beyond

rated capacity), substitution of parts not approved by Seller, accident or alteration, as determined by Seller

or (ii) if the product is operated on a gas with an H2S level above 100 PPM. In addition, Seller does not

warrant that any equipment and features meet the requirements of any local, state or federal laws or

regulations. Products supplied by Seller hereunder which are manufactured by someone else are not

warranted by Seller in any way, but Seller agrees to assign to Buyer any warranty rights in such products

that Seller may have from the original manufacturer. Labor and expenses for repair are not covered by

warranty.

THE WARRANTY CONTAINED HEREIN IS EXCLUSIVE AND IN LIEU OF ALL OTHER REPRESENTATIONS AND

WARRANTIES, EXPRESS OR IMPLIED, AND SELLER EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED

WARRANTY OF MERCHANTABILITY OR IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Any description of the products, whether in writing or made orally by Seller or Seller’s agents,

specifications, samples, models, bulletins, drawings, diagrams, engineering sheets or similar materials used

in connection with Buyer’s order are for the sole purpose of identifying the products and shall not be

construed as an express warranty. Any suggestions by Seller or Seller’s agents regarding use, application or

suitability of the products shall not be construed as an express warranty unless confirmed to be such in

writing by Seller.

Operational Flow Charts

Volume and

Capacity slides are

less than 5 %.

Requirements to Start Compressor

Oil Separator Temp

> Oil Sep Start Trip

Setpt.

Filter Diff Press <

Start Filter Diff

Trip Setpt

Oil Pump On: Prelub Oil Press is > Prelub Oil

Press Reset Setpt for “Min Compressor Prelub

Timer” setting (Default 7 Seconds) Start Compressor

Critical Compressor Run Logic @ Compressor Start

Run Oil Press >

Run Oil Press

Reset setpt?

(Default 40 PSI)

Run Oil Press Failure

“Filter Diff Press Safety

Changeover” timer expires

(60 sec after start).

Filter Diff < Hi Filter

Diff Press Run Trip

setpt?

Oil Separator Temp

Safety Changeover

Timer expires. (5 min

after start)

Oil Sep Temp > Lo

Oil Sep Run Reset

setpt:?

Run

Run Filter Diff Press Failure Lo Run Oil Sep Temp Failure

Yes

Yes Yes

Yes

Compressor Amperage Load Limiting High Disch Pressure Load Limit

Motor Amps >

FLA (ON)

Setpt?

Motor Amps >

Max (OFF)

Setpt?

Normal Loading &

Unloading

Capacity Decrease

until Amps < FLA x

1.0625

Normal Loading &

Unloading

Capacity Decrease until

DischPress < ON Setpt x

1.0625

Disch Press >

Cutin (ON)

Setpt?

Disch Press >

Cutout (OFF)

Setpt?

Yes

Capacity INC Disabled Capacity INC Disabled

Start

Compressor

Prelube 5

Seconds Satified Oil

Pressure

Compressor

Start Mode Is Run Oil Press >

Run Oil Press setpt? Yes

Suction Pressure Control

Suction Press >

Suct Press Cap Inc

Setpt?

Suction Press <

Suct Press Cap

Dec Setpt?

Reset Cap Inc Timers

Suction Press <

Suct Press Alarm

Setpt?

Lo Suction Press

Alarm

Is Cap Inc ON Timer

Timed Out? Is Cap Inc OFF Timer

Timed Out?

Capacity Inc WAIT

Capacity Dec

Is Cap Dec. ON Timer

Timed Out? Is Cap Dec. OFF Timer

Timed Out? Reset Cap Dec Timers

Yes Yes Yes

No No No

Yes Yes Yes

Suction Pressure Safety

Suction Press <

Suct Press Trip

Setpt?

Lo Suction Press

Failure

Yes

Oil Cooler Fan Control

(Selectable Control Optional)

Increase Speed

Decrease Speed

Unit Start

30 sec

delay

Yes

Oil Cooler

outlet temp >

set pt?

Oil Cooler

outlet temp <

set pt?

NoNo

Oil Temperature Control Valve

Modulate valve

Unit Start

30 sec

delay

Yes

Oil injection

temp > set pt?

Oil injection

temp < set pt?

No No

PID Control

Shutdown due to

Operational

Failure

Delayed Lockout Timers

WARNING: FOR THE FOLLOWING SHUTDOWNS, A DELAYED RESTART MAY OCCUR:

High Discharge Pressure Failure

High Compressor Discharge Temp Failure

High Package Outlet Temp Failure

High Oil Injection Temp Failure

Shutdown Value

Below Reset

Value?

1 min Delay

Have

There Been 3 Shutdowns of “Any

of the Above Failure Conditions”

in H2 Hours

Auto Restart if All Other Values

Are In Range

Lockout

Requires

Manual Restart

Has

It been *H1

Hours Since

Shutdown?

H1= Timer Set Between .5-6 Hours.

Default Value= .5 Hours

H2= Timer Set Between 4-100 Hours.

Minimum and Default Value= 4 Hours

H2 must be equal to or greater than 4 x H1

Yes

Shutdown Due

to Power Failure

1 min Delay Have

There Been 3 Shutdowns

of This Same Condition

in H4 Hours

Auto Restart if All Other Values

Are In Range

Lockout

Requires

Manual Restart

Has

It been *H3

Hours Since

Shutdown?

H3= Timer Set Between .5-6 Hours.

Default Value= .5 Hours

H4= Timer Set Between 4-100 Hours.

Minimum and Default Value= 4 Hours

H4 must be equal to or greater than 4 x H3

Yes Yes

Yes

Power Re-

establishing

WARNING: INCASE OF A POWER FAILURE A DELAYED RESTART MAY OCCUR:

Was Compressor

Running During Power

Failure?

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