Flowserve MX-100 Field Unit - Manual (Page 60)

MX/DDC-100 Field Unit Installation and Maintenance FCD LMENIM2329-01 – 03/11
60
Register 12
Digital Inputs 1 register. Read-only. 16-bit unsigned value. Contains field unit status and digital input status.
Bit 00 Remote Selected – Monitors the actuator LCS. Indicates the LCS has been switched to the Remote position.
The host is in control of the actuator. Value of 1=True, Value of 0=False.
Bit 01 Thermal Overload Fault – Indicates the motor has overheated and the thermistor has opened. This unit
is unable to operate and time is required for the motor to cool and reset the thermistor. Value of 1=True, Value of
0=False.
Bit 02 Open Torque Switch – Indicates an overtorque condition while traveling in the open direction. This condition
will also be true if the actuator is 100% open and torque-seated. Value of 1=True, Value of 0=False.
Bit 03 Open Limit Switch – Open limit switch is engaged. Valve is fully opened. Value of 1=True, Value of 0=False.
Bit 04 Close Torque Switch – Indicates an overtorque condition while traveling in the close direction. This condition
will also be true if the actuator is 0% open and torque-seated. Value of 1=True, Value of 0=False.
Bit 05 Close Limit Switch – Close limit switch is engaged. Valve is fully closed. Value of 1=True, Value of 0=False.
Bit 06 Not Used
Bit 07 Not Used
Bit 08 User Input 0 – User Input 0 setting is configurable (factory default is ESD). Referenced as Terminal 30.
Connect with 120 VAC or 24 VDC. Minimum ON voltage 19.2 VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of
1=True/ON, Value of 0=False/OFF.
Bit 09 User Input 1 – User Input 1 setting is configurable (factory default is Open Inhibit). Referenced as Terminal 34.
Connect with 120 VAC or 24 VDC. Minimum ON voltage 19.2 VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of
1=True/ON, Value of 0=False/OFF.
Bit 10 User Input 2 – User Input 2 setting is configurable (factory default is Close Inhibit). Referenced as Terminal 35.
Connect with 120 VAC or 24 VDC. Minimum ON voltage 19.2 VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of
1=True/ON, Value of 0=False/OFF.
Bit 11 Remote Stop Input – Referenced as Terminal 26. Connect with 120 VAC or 24 VDC. Minimum ON voltage 19.2
VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of 1=False/OFF, Value of 0=True/ON.
Bit 12 Remote Open Input – Referenced as Terminal 25. Connect with 120 VAC or 24 VDC. Minimum ON voltage 19.2
VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of 1=True/ON, Value of 0=False/OFF.
Bits 14-15 Not Used
Bit 13 Remote Close Input – Referenced as Terminal 27. Connect with 120 VAC or 24 VDC. Minimum ON voltage
19.2 VAC/DC; maximum OFF voltage 5.0 VAC/DC. Value of 1=True/ON, Value of 0=False/OFF.
Register 13
Digital Inputs 2 register. Read-only. 16-bit unsigned value. Contains field unit status and digital input status.
Bit 00 Analog Board 1 Present - Indicates optional analog board #1 is present
Bit 01 Analog Board 2 Present - Indicates optional analog board #2 is present.
Bit 02 Analog Input 1 Lost - Indicates analog Input 1 is not receiving a 4-20 mA signal. Referenced as Terminals 39
and 28 (common). Value of 1=True, Value of 0=False.