Emerson VSG User manual

VSG/VSSG compact logix PLC
Operation manual
FOR UNITS BUILT BEFORE JULY 1, 2013

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VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
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).

4/Blank VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL

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VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
Important Note ................................................................................................. 3
VSG/VSSG 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 Timer Setpoints ........................................................................... 26
Compressor Control Setpoints......................................................................... 28
Additional Compressor Controls...................................................................... 33
Compressor Setpoints and Alarms................................................................... 34
Motor Speed Setpoints & Control Screen ......................................................... 36
Diagnostics Force Output ................................................................................ 38
Instrument Calibration .................................................................................... 39
Oil Mixing Valve............................................................................................... 45
Unit Start Screen (Start / Stop Logic)................................................................ 48
Device Names.................................................................................................. 51
Calibration Procedure of Optical Actuators...................................................... 52
Calibration Procedure of Optical Actuators...................................................... 53
Calibration Procedure of Optical Actuators...................................................... 54
Installation Instructions For Replacement Of Optical Actuator ......................... 56
Slide Valve Actuator Theory of Operation ........................................................ 57
Slide Valve Actuator Troubleshooting Guide .................................................... 58
Command Shaft Rotation and Travel................................................................ 60
Safety Failure Message .................................................................................... 62
Version Screen................................................................................................. 65
Trend Charts.................................................................................................... 66
Captured Data at Shutdown ............................................................................ 69
Table of Contents

6VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
VSG/VSSG 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.

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VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
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
Is
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).
Is
Filter Diff < Hi Filter
Diff Press Run Trip
setpt?
Oil Separator Temp
Safety Changeover
Timer expires. (5 min
after start)
Is
Oil Sep Temp > Lo
Oil Sep Run Reset
setpt:?
Run
Run Filter Diff Press Failure Lo Run Oil Sep Temp Failure
No
Yes
No
Yes Yes
No
Yes
Compressor Amperage Load Limiting High Disch Pressure Load Limit
Is
Motor Amps >
FLA (ON)
Setpt?
Is
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
Is
Disch Press >
Cutin (ON)
Setpt?
Is
Disch Press >
Cutout (OFF)
Setpt?
No
Yes
Yes
No
No
Yes
Yes
No
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

8VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
Suction Pressure Control
Is
Suction Press >
Suct Press Cap Inc
Setpt?
Is
Suction Press <
Suct Press Cap
Dec Setpt?
Reset Cap Inc Timers
Is
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
No
Yes Yes Yes
No
Suction Pressure Safety
No
Is
Suction Press <
Suct Press Trip
Setpt?
Lo Suction Press
Failure
Yes
Yes
No
No
Operational Flow Charts

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VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
Oil Cooler Fan Control
(Selectable Control Optional)
Increase Speed
Decrease Speed
Unit Start
30 sec
delay
Yes
Yes
Oil Cooler
outlet temp >
set pt?
Oil Cooler
outlet temp <
set pt?
NoNo
Oil Temperature Control Valve
Modulate valve
Modulate valve
Unit Start
30 sec
delay
Yes
Yes
Oil injection
temp > set pt?
Oil injection
temp < set pt?
No No
PID Control
PID Control
Operational Flow Charts

10 VSG/VSSG • Compact Logix PLC Manual •Vilter/Emerson • 35391CL
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
Is
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
Yes
No
No
Yes
No
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
No
Yes
Yes
No
Power Re-
establishing
WARNING: INCASE OF A POWER FAILURE A DELAYED RESTART MAY OCCUR:
Was Compressor
Running During Power
Failure?
No
No
Operational Flow Charts