Main Menu - Analog I/O Option Mcb 109 - Group - Danfoss VLT AQUA Programming Manual

2. Parameter Description
25-91 Manual Alternation
Option:
[0]
2

2.22. Main Menu - Analog I/O Option MCB 109 - Group

26
2.22.1. Analog I/O Option MCB 109, 26-**
The Analog I/O Option MCB 109 extends the functionality of VLT
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.
Terminal
X42/1
X42/3
X42/5
X42/7
X42/9
X42/11
Table 2.2: 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.
244
* 0 = Off - Number of
Pumps
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.
Parameters Terminal
Analog inputs
26-00, 26-1*
26-01, 26-2*
26-02, 26-3*
Analog outputs
26-4*
26-5*
26-6*
MG.20.O2.02 - VLT
Function:
This parameter is only active if the options
Stating or Command are selected in
25-50.
The parameter is for manually setting of what pump to be as-
signed as variable speed pump. The default value of Manual
Off
Alternation is [0]. If a value other than
alternation is carried out immediately and the pump that is se-
lected with Manual Alternation is the new variable speed pump.
After the alternation has been carried out, the Manual Alterna-
Off
tion parameter is reset to
number which equals the actual variable speed pump, the pa-
rameter will be reset to [0] immediately after.
Parameters
Analog inputs
53 6-1*
54 6-2*
Analog output
42 6-5*
®
is a registered Danfoss trademark
®
VLT AQUA Drive Programming Guide
At Command
or
Lead Pump Alternation , par.
Off
[0] is set, the
[0]. If the parameter is set to the
® AQUA Drive FC 200 Series
Terminal Parameters
Relays
Relay 1 Term 5-4*
1, 2, 3
Relay 2 Term 5-4*
4, 5, 6
At