9 Troubleshooting PROline Promag 53
114 Endress+Hauser
Wall-mounted housing: removing and installing printed circuit boards (Fig. 55)
#
Warning:
• Risk of electric shock. Exposed components carry dangerous voltages. Make sure
that the power supply is switched off before you remove the cover of the electronics
compartment.
• Risk of damaging electronic components (ESD protection). Static electricity can
damage electronic components or impair their operability. Use a workplace with a
grounded working surface, purpose-built for electrostatically sensitive devices.
1. Remove the screws and open the hinged cover (1) of the housing.
2. Remove the screws securing the electronics module (2). Then push up electronics
module and pull it as far as possible out of the wall-mounted housing.
3. Disconnect the following cable plugs from amplifier board (7):
– Electrode signal cable plug (7.1) including S-DAT™ (7.3)
– Coil current cable plug (7.2)
– Ribbon cable plug (3) of the display module
4. Remove the cover (4) from the electronics compartment by loosening the screws.
5. Remove the boards (6, 7, 8, 9):
Insert a thin pin into the hole (5) provided for the purpose and pull the board clear
of its holder.
6. Remove submodules (8.2):
No tools are required for removing the submodules (inputs/outputs) from the I/O
board. Installation is also a no-tools operation.
"
Caution:
Only certain combinations of submodules on the I/O board are permissible
(see Page 54). The individual slots are marked and correspond to certain terminals
in the connection compartment of the transmitter:
“INPUT / OUTPUT 2” slot = terminals 24 / 25
“INPUT / OUTPUT 3” slot = terminals 22 / 23
“INPUT / OUTPUT 4” slot = terminals 20 / 21
7. Installation is the reverse of the removal procedure.
"
Caution:
Use only original Endress+Hauser parts.
To Next Page
Loading...
