Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
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Pneumatic Module<br />
Operation <strong>and</strong> <strong>Maintenance</strong><br />
Double Acting Pneumatic Relay<br />
The double acting pneumatic relay amplifies the pressure from the I/P <strong>and</strong> provides a<br />
pair of high flow output signals for operating a double acting cylinder actuator. The<br />
double acting relay operates on any supply pressure that is at least 5 psi (.345 bar, 34.5<br />
kPa) above the required actuator pressure, up to 150 psi (10.35 bar, 1035 kPa). The<br />
two output pressures may be balanced by means of an adjustable seat assembly. The<br />
average of the two pressures is adjusted to equal 70% of the supply pressure. The<br />
double acting relay is rated for supply pressure to 150 psi (10.35 bar, 1035 kPa).<br />
I/P Current to Pneumatic Converter<br />
Output 2 Gauge<br />
Double Acting<br />
Relay<br />
Vent<br />
Output 1 Gauge<br />
Supply Gauge<br />
Supply Inlet<br />
Output 1 "Act 1"<br />
Output 2 " Act 2"<br />
Figure 76 Double Acting Pneumatic Relay<br />
Double Acting Supply Pressure Balance<br />
After installation on the actuator, set supply pressure in accordance with actuator<br />
specifications. Do not exceed the maximum pressure rating of the actuator. The double<br />
acting relay is adjusted at the factory <strong>and</strong> set to 70% of supply pressure. If adjustment is<br />
required consult the factory.<br />
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