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Onboard connections
RTD connector
Digital input
Digital output
Communication port 1
3.7
Reinstall the I/O expansion board
To reinstall the optional I/O expansion board, if in use:
1.
For G4 IMV upgrades, reinstall the I/O expansion board. Using a small slotted
screwdriver, begin turning each captive screw a few turns each, moving
sequentially to each of the 4 (four) corners of the board to slowly seat the board
into the onboard connector. Continue until the board is fully seated.
2.
For G3 IMV communication board to I/O expansion board upgrades, install the
G4/G5 I/O expansion board. Move the G3 IMV communication board wires to
the corresponding pins on the G4/G5 I/O expansion board. See Table 3 for
communication wiring information and Table 4 for Digital I/O wiring information.
IMPORTANT NOTES: The G3 legacy terminal connectors are not a
direct swap to the G5. G4 connector terminals are a direct swap to the
G5 and no rewiring is required.
RS-485 bus terminations are software selectable in the G5 platform.
Please follow the instructions in the COMM 2 setup instruction section
of the startup guide included in this kit.
G5 Pin
RS-232
J2-1
Volts out
J2-2
Ground
J2-3
Sw. volts out
J2-4
Operate
J2-5
N/A
J2-6
Request to send
J2-7
Transmit data
J2-8
Receive data
J2-9
Clear to send
1
RTD wiring points differ from the G3 to G4/G5 µFLO and may require rewiring.
2
RS-485 communication wiring termination is set during communication setup in
PCCU32.
Table 3: Expansion board communication pinouts
G3 IMV
G4 IMV
1
J9
J3
NA
J12
N/A
J13
N/A
J10
RS-422
Volts out
Ground
Sw. volts out
Operate
RRTS
Transmit bus +
Transmit bus –
Receive bus +
Receive bus -
G5 IMV
1
J3
J12
J12
2
J10
RS-485
Volts out
Ground
Sw. volts out
Operate
RRTS
Transmit bus +
Transmit bus –
N/A
N/A
2105515-001 rev. AB | 11
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