Elster EnCal 3000, Technical Documentation Manual, Page: 84 / 118

page 78 EnCal 3000
7.2.2.4 MFE11 Input Board
A multi-functional MFE11 input board is equipped with 8 digital message inputs 0/24 V DC; however, it is also possible to
use these channels as pulse inputs with a maximum input frequency of 25 Hz. Connect the inputs at terminals D1+ to
D8+ with the common ground D- .
In addition, the MFE11 input board provides 3 analog inputs for the connection of measuring sensors with 0/4 to 20 mA
output signals. Connect the inputs via terminals A1+ / A2+ / A3+ with the common ground A- .
The analog inputs of the MFE11 board are electrically isolated from the digital inputs. Besides, all channels are
electrically isolated from the rest of the system. Connect the cable shielding for the inputs to the SH terminal.
7.2.2.5 AE12 Input Board
The AE12 input board offers 12 analog inputs for the connection of measuring sensors with 0/4 to 20 mA output
signals. Connect the inputs via terminals I1+ to I12+ with the common ground I- . Connect the cable shielding to
the SH terminal.
7.2.2.6 MFA8 Output Board
A multi-functional MFA8 output board contains one PhotoMos output for the output of a message as break
contact ( D1a / D1b ). In addition, there are three PhotoMos outputs for the output of additional messages or
volume pulses ( D2+/D2- , D3+/D3- , D4+/D4- ). The output assignment can be parameterized as desired within a
certain range.
The MFA8 output board also provides four analog outputs for the output of measurements. Current limits can be
parameterized in a range of 0 to 20 mA. The corresponding terminals are marked I1 to I4 with the common
ground I- .
The message and pulse outputs are electrically isolated from each other and from the rest of the system; the
analog outputs are electrically isolated from the rest of the system but not from each other.
Connect the cable shielding for the outputs to the SH terminal of the board.
The analog output assignment can be parameterized as desired.
7.2.2.7 DA12 Output Board
The digital DA12 output board 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 the common ground DC .
Furthermore, the LMFA7 board is equipped with four 0/4 to 20 mA analog outputs (terminals I1, I2, I3, I4 with the
common ground I- ).
The terminals named LA and LE on top of the board are reserved for later expansions (LA = fiber-optics output,
LE = fiber-optics input).
Connect the cable shielding to the SH terminal of the board.