System Troubleshooting - ABB MAG-X 3000 Series Instruction Manual

INSTRUCTION MANUAL 10DX3111A&G Sizes 14 - 24 Inches

6.2 System Troubleshooting

If the Magnetic Flowmeter doesn't appear to be operating properly, the following procedure can be
used as a guide to isolate the malfunctioning device to either the primary meter or the Signal
Converter. A standard multimeter and an oscilloscope are suitable for making most of the test
measurements.
To supplement the following discussion refer to:
• Section 5.0 Circuit Description
• Applicable Signal Converter Instruction Bulletin
The Series 3000 Magnetic Flowmeter housing is supplied as a
sealed unit. Therefore, customer field repairs to these meters are
not recommended. In the event of a malfunction, repairs should
only be performed by an ABB Automation field service engineer, or
the complete meter returned (shipping charges prepaid) to ABB
ELECTRICAL SHOCK HAZARD. Equipment powered by an AC line
voltage presents a potential electric shock hazard. Servicing of the
Magnetic Flowmeter or Signal Converter should only be attempted by a
1. If the magnetic flowmeter does not appear to be operating properly, proceed as follows:
a) Remove access covers from the junction box and the Converter housing.
b) Inspect for evidence of water entry in the junction box and Converter housing.
If water is present in either the junction box or converter housing of the flowmeter, immediately
de-energize system power to eliminate the possibility of a shock hazard.
The presence of water in either the converter housing or the terminal box on the remote primary most
often results in irreparable damage to the circuit board assemblies inside. If such damage is evident,
the meter should be removed from the process pipeline and returned to ABB Automation for repair. It
is also important that the source of the water-entry be found so that the situation doesn't reoccur
when the meter is placed back into service.
Should water be found inside the wiring compartment of a Converter housing, the circuit board
assembly in this section may be replaced in the field (Consult the factory for additional instructions if
this procedure becomes necessary).
2. Since signal wiring and operating procedures depend on the type of Converter and the mounting
option selected, the user should refer to the instruction bulletin supplied with the associated Signal
Converter for system troubleshooting procedures. A static performance test for the primary mounted
components is discussed in Section 6.3.
6-2
NOTE
Automation for service.
WARNING
qualified electronics technician.