Emerson Process Management Rosemount 2410 manual Reference Manual

Reference Manual

300530EN, Rev BA September 2012

Rosemount 2410

Symptom	Possible cause		Action
No communication with one or	Wiring	•	Check that the devices appear in the Device Live List
more devices on the Tankbus			(see “Device Live List” on page 6-4).
		•	Check diagnostics information, see “Diagnostics” on
			page 6-7for warning or error messages.
		•	Check that wires are properly connected to the
			terminals.
		•	Check for dirty or defective terminals.
		•	Check wire insulation for possible short circuits to
			ground.
		•	Check diagnostics information (see “Diagnostics” on
			page 6-7) for information that indicate bad
			communication on the Tankbus:
			- Input registers 1300 to 1328 provide general
			information on Tankbus communication
			- Input registers 1330 to 1648 provide information on
			specific devices on the Tankbus.
		•	Check diagnostics information (see “Diagnostics” on
			page 6-7) for possible hardware faults that indicate
			short circuits or ground faults:
			- check Input Register 1326 for short circuits
			- check Input Register 1328 for ground faults.
		•	Check that there are no multiple shield grounding points
		•	Check that the cable shield is grounded at the power
			supply end (2410 Tank Hub) only.
		•	Check that the cable shield is continuous throughout
			the Tankbus network.
		•	Check that the shield inside the instrument housing
			does not come into contact with the housing.
		•	Check that there is no water in conduits.
		•	Check for proper polarity at the terminals (Rosemount
			5300 and 5400).
		•	Use shielded twisted pair wiring.
		•	Connect wiring with drip loops.
		• Check the loop impedance.
	Incorrect Tankbus termination	•	Check that there are two terminators on the Tankbus
			(see section “Tankbus” on page 3-8).
		•	Check that terminations are placed at both ends of the
			Tankbus.
		•	Check that the built-in termination in the 2410 Tank Hub
			is enabled.
	Too many devices on the Tankbus	•	Check that the total current consumption of the devices
			on the Tankbus is less than 250 mA, see “Power
			Budget” on page 3-7.
		• Remove one or more devices from the Tankbus. The
			2410 Tank Hub supports a single tank. The multiple
			tank version of the 2410 supports up to 10 tanks.
	Cables are too long	•	Check that the input voltage on the device terminals is
			9 V or more (see section “Tankbus” on page 3-8).
	Software or hardware failure	•	Check diagnostics information, see “Diagnostics” on
			page 6-7.
		•	Check Device Status input register, see “Device Status”
			on page 6-23.
		• Contact Emerson Process Management/Rosemount
			TankGauging service department.

Section 6. Service and Troubleshooting 6-19