Burkert 8745 MFC Ethernet, Руководство по эксплуатации

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Electrical installation
Type 8745 Ethernet, 8745 Analogue
d-sub de-9 male
connector
pin assignment
1
2
3
4
5
6
7
8
9
1 Digital input
2
GND for the digital input
and the power supply
3 +24 V DC
4
Relay - Normally closed
contact (Break contact)
5 Relay - Reference contact
6 Set-point input
7 GND for the set-point input
8
Analogue output for the
measured value
9
GND for the analogue
output
Housing FE
Fig. 26: MFC Analogue: Pin assignment of the D-sub DE-9 male
connector
→ To get more information on the digital input, refer to
chpt. 8.5.1.
→ To get more information on the relay output, refer to chpt. 8.5.2.
→
Connect the D-sub DE-9 female connector to the D-sub DE-9
male connector.
→ Tighten the screws to a torque of 0,5...0,6 N·m, that is
0,37...0,44 lbf·ft.
→
Do the functional earthing of the product. Refer to chpt. 8.7.
8.5.1 Digital input
The D-sub DE-9 male connector has a digital input. A digital
input is used to remotely trigger a function. The following func -
tions are some examples of the available functions:
•
MFC: Start the function autotune,
•
MFC: Trigger the remote control of the actuator or trigger the
control of the actuator by the product.
•
MFM or MFC: Reset the totaliser for the active gas,
•
MFM or MFC: Select which gas is active among 3 gases
Tab. 31 shows the function that is assigned by default to the
digital input of the D-sub DE-9 male connector of an MFM or an
MFC.
Tab. 31: Default assignment of the digital input of the D-sub DE-9 male
connector
product variant analogue default assignment
MFM No assignment
MFC start autotune
→ To choose the function to be remotely triggered over the digital
input, use the Bürkert Communicator software. To connect
the product to the Bürkert Communicator software, refer to
chpt. 10.4 . Only one of the available functions can be associated
to the digital input.
A function has 1, 2 or 3 possible switching levels. If a function
has several switching levels, then each switching level triggers
another action. Tab. 32 gives the actions that are associated to
the switching levels, and shows how each level is activated.
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