118
FSM4000
ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E
… 10 Maintenance / Repair
Replacing the transmitter
The transmitter plug-in unit can be replaced without loss of
function for nominal diameters DN 3 to DN 1000.
When replacing the FRAM-calibrated flowmeter sensor
(identifiable by the Cs and Cz values on the name plate), please
take into consideration the following points:
• Does the replacement transmitter plug-in unit use the
same power supply?
• Does the replacement transmitter plug-in unit have the
same input/output functions or use the same type of
communication?
NOTICE
Important for plug-in units with PROFIBUS PA /
FOUNDATION Fieldbus
If the transmitter is located at the bus end and if the bus
termination is activated via both hook switches, the bus
termination is canceled when the transmitter plug-in unit is
removed. The bus is no longer terminated properly.
WARNING
Warning - Electrical dangers!
When the housing is open, EMC protection is impaired and
there is no longer any protection against accidental contact.
• Power to all connection leads must be switched off.
1.
Switch off the power supply before installing the
replacement transmitter plug-in unit. After waiting 40
minutes, remove the housing cover from the field housing
unit. First, remove the shock protection covers (3 screws).
Next, remove the upper mounting screw and the center stay-
bolt on the plug-in. The plug-in module can now be pulled up
and off the connection plug. Install the replacement
transmitter plug-in in reverse order.
1
Shock protection cover
2
Fixing screw cover
Figure 64: Removing the shock protection cover
1
Fixing screw for plug-in unit
2
Transmitter plug-in unit
3
Stud bolt for plug-in unit
Figure 65: Disassembling the transmitter plug-in unit
2. Power-up the power supply; the model number for the
transmitter and the current software revision are displayed.
The flowmeter sensor and system data from the external
FRAM are imported:
a) The following information is displayed:
• Warning 7 – External data is loaded.
When replacing the transmitter all flowmeter sensor and
measuring point parameters are imported by the
replacement transmitter. After successful data transfer,
the ‘Warning 7’ message is deleted after approx. 30 sec.
b) Transmitter and sensor are recommissioned (e.g., after a
power failure):
No warning is displayed; the transmitter runs
automatically with the data from the internal and external
FRAM.
c) Only the transmitter is replaced; order numbers are not
identical. The external sensor and system data is
imported. The following message is displayed:
• Warning 7 – External data is loaded.
d) If the order number, unit number, Cs, Cz and nominal
diameter are identical (e.g., if the transmitter is used
from a delivery with identical configuration data), the
process data is imported from the internal to external
FRAM. The sensor data continues to be imported from
the external to internal FRAM. The following message is
displayed:
• Warning 8b – (Update external data).
