2.21 Main Menu - Analog I/O Option MCB 109 - Group 26
2.22.1 26-** Analog I/O Option MCB 109
The Analog I/O Option MCB 109 extends the functionality of VLT
®
Automation VT Drive FC 322 Series frequency converters, by adding a number of
additional, programmable analog inputs and outputs. This could be especially useful in control installations where the frequency converter may be used
as decentral I/O, obviating the need for an outstation and thus reducing cost. It also gives flexibility in project planning.
NB!
The maximum current for the analog outputs 0-10V is 1mA.
NB!
Where Live Zero Monitoring is used, it is important that any analog inputs not being used for the frequency controller, i.e. being used
as part of the Building Management System decentral I/O, should have their Live Zero function disabled.
Terminal
Parameters
Terminal
Parameters
Terminal
Parameters
Analog inputs
Analog inputs
Relays
X42/1
26-00, 26-1*
53
6-1*
Relay 1 Term 1, 2, 3
5-4*
X42/3
26-01, 26-2*
54
6-2*
Relay 2 Term 4, 5, 6
5-4*
X42/5
26-02, 26-3*
Analog outputs
Analog output
X42/7
26-4*
42
6-5*
X42/9
26-5*
X42/11
26-6*
Table 2.4: Relevant parameters
It is also possible to read the analog inputs, write to the analog outputs and control the relays, using communication via the serial bus. In this instance,
these are the relevant parameters.
Terminal
Parameters
Terminal
Parameters
Terminal
Parameters
Analog inputs (read)
Analog inputs (read)
Relays
X42/1
18-30
53
16-62
Relay 1 Term 1, 2, 3
16-71
X42/3
18-31
54
16-64
Relay 2 Term 4, 5, 6
16-71
X42/5
18-32
Analog outputs (write)
Analog output
X42/7
18-33
42
6-63
NOTE! The relay outputs must be enabled via
Control Word Bit 11 (Relay 1) and Bit 12 (Relay
2)
X42/9
18-34
X42/11
18-35
Table 2.5: Relevant parameters
Setting of on-board Real Time Clock.
The Analog I/O option incorporates a real time clock with battery back-up. This can be used as back up of the clock function included in the frequency
converter as standard. See section Clock Settings, parameter group 0-7*.
2 Parameter Description
VLT
p
Automation VT Drive FC322
Programming Guide
254
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p
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2
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