7
Installation
Page 114
gas-lab
Q1
7.2.2.6
MFA6 output board
The multi-functional MFA6 output board contains 1 relay contact for the output
of a message as break contact (
D1a
/
D1b
). Furthermore, there are 3 transistor
outputs for the output of additional messages or volume pulses (
D2+/D2-
,
D3+/D3-
,
D4+/D4-
). The output assignment can be parameterised as desired
within a certain range.
The MFA6 output board also provides 2 analogue outputs for the output of
measurements. The current limits can be parameterised in a range of 0 to
20 mA. The associated terminals are marked
I1+/I1-
and
I2+/I2-
, respectively.
The outputs are electrically isolated from each other and from the rest of the
system.
The parameterisation for the analogue output assignment is unrestricted.
Connect the cable shielding for the outputs to the
SH
terminal of the board.
7.2.2.7
DA12 output board
The digital output board DA12 has 12 transistor outputs for the output of
messages or volume pulses (to be connected to terminals
D1,
…, D12
with the
common reference point
COM
). Connect the cable shielding for the outputs to
the
SH
terminal.
7.2.2.8
LMFA7 output board
The LMFA7 output board offers 3 digital outputs: one relay output (active break
contact) for the output of a message and two transistor outputs for the output of
messages or pulses. Connect the outputs via terminals
D1, D2, D3
with
common ground
DC
.
Furthermore, the LMFA7 board is equipped with 4 analogue outputs 0/4..20 mA
(terminals
I1, I2, I3, and I4
with common ground
I-
).
The terminals named
LA
and
LE
right at the top of the board are fibre-optics
connections for an external I/O expansion (LA = fibre-optics output, LE = fibre-
optics input).
Connect the cable shielding to the
SH
terminal of the board.