Figure 1-16. Typical Discrete Output Alarm Connections; Figure 1-17. Typical Rs232 Serial Interface Connection - Hamilton Sundstrand Company Gas Fuel Metering Valve HFG2.0 User Manual

Discrete Outputs
The discrete outputs are +24 VDC. They are electrically isolated up to 500
VAC. See Figure 1-16 for a typical discrete output alarm connection.
CONTROLLER DISCR ETE INPUT
CONTROLLER DISCRETE INPUT

Figure 1-16. Typical Discrete Output Alarm Connections

RS232 Serial Communications Interface
Signal levels for the serial communications input and output are per
RS232 standards. See Figure 1-17 for a typical RS232 serial interface
connection. See Table 1-5 for computer COM port pin-outs for RS232.

Figure 1-17. Typical RS232 Serial Interface Connection

FAULT ALARM [ORN]
OVERTEMP ALARM [BLK]
FAULT RTN [WH T/ORN]
OVERTEMP RTN [WH T/BLK]
FAULT RTN [WHT/ORN]
OVERTEMP ALARM RTN [WHT/BLK]
FAULT ALARM [ORN]
OVERTEMP ALARM [BLK]
HFG2.0 DISCRETE OUTPUT
HFG2.0 DISCRETE OUTPUT
INSTALLING THE HFG2.0
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