Table 3-4. Fault Configuration For Overtemp Alarm - Hamilton Sundstrand Company Gas Fuel Metering Valve HFG2.0 User Manual

Fault Type
Motor
Electronics

Table 3-4. Fault Configuration For OVERTEMP Alarm

Automatic Shutdown Feature
The HFG2.0 has a self-protective shutdown feature. The HFG2.0 will
shutdown if:
Property Damage and Injury Hazard – If the motor windings exceed
135° C
(100° C
electronics thereby allowing the actuator to move with load. When
power is removed, the return spring causes the poppets to return to
the soft seats, thereby closing the valve. Touching the HFG2.0 may
result in serious burn injury
Persist Time
10 Sec Motor temp > 130° C, Fault.
Motor temp > 135° C for 10 Sec, shutdown.
1 Sec
Motor temp > 130° C, Fault
temp > 130° C for 60 Sec, shutdown.
10 Sec Electronics temp > 110° C, Fault.
If fault exists and Electronics temp > 115° C for 10 Sec,
1 Sec
shutdown.
Electronics temp > 110° C, Fault.
If fault exists and Electronics temp > 100° C for 15 Sec,
shutdown.
• Any two motor winding temperatures exceed 135 °C for ten (10)
or more (130 °C for 60 seconds
seconds
• The electronics temperature exceeds 115 °C for 10 seconds
more (100 °C for 15 seconds
Note: The POSITION and MOTOR CURRENT feedback signals
will both be set to 0 mA when the current to the actuator
motor is removed.
(130°C
), the MCE will shut down power to the motor and
Fault Action
)
WARNING
) or the electronics exceed 115° C
CH. 3: OPERATING THE HFG2.0
. If fault exists and
. If fault exists and Motor
)
or
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