Emerson VSG & VSSG Troubleshooting Guide download pdf (Page 25)

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

Compressor Setpoints and Alarms

· Prelube Oil Pressure – This is the low Prelube

Oil Pressure safety. The Trip will be active if the

compressor is in Pre-lube and the Oil Pressure

drops below the set-point value.

· Low Oil Pressure – This is the Low Oil Pressure

Safety. The Alarm and Trip will occur if the Oil

Pressure drops below the set-point(s) value.

· High Filter Differential Pressure – Start – This is

the High Filter Differential Pressure (at compres-

sor Start) Safety. The Alarm and Trip will occur

if the Oil Differential Pressure (Filter Inlet Pres-

sure – Manifold Pressure) at Compressor Start

is above the set-point(s).

· High Filter Differential Pressure – Run – This is

the High Filter Differential Pressure (while the

compressor is running) Safety. The Alarm and

Trip will occur if the Oil Differential Pressure (Fil-

ter Inlet Pressure – Manifold Pressure) while the

Compressor is running above the set-point(s).

· High Motor Amps – This is the High Motor Amps

Safety. The Alarm and Trip will occur if the Motor

Amps exceed the set-point(s).

· Motor Winding Temperature - This is the High

Winding Temperature Safety. The Alarm and

Trip will occur if the Motor Winding Tempera-

ture is above the set-point(s). These set-points

are only active when the compressor has been

selected to have Motor Winding Temperature

RTDs.

· Motor Bearing Temperature - This is the High

Bearing Temperature Safety. The Alarm and Trip

will occur if the Motor Bearing Temperature is

above the set-point(s). These set-points are only

active when the compressor has been selected

to have Motor Winding Temperature RTDs.

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Emerson VSG & VSSG Troubleshooting Guide Page 25