9.9.9.2
Version
“
1
”
: Two controlled groups
The programming described below applies equally for group control by the analogue outputs
“
A1
”
/
“
A2
”
and by the MODBUS interface.
Required allocation: Function
|
2A
|
for activation of Group1, function
|
5A
|
for Group2.
Controller Setup
Group 2 ON value
Switch-on value for Group2
Setting range: 0 - 100 %
Factory setting: 50 % *
50 %
Group 2 ON value
Controller Setup
OFF Value Group2
Switch-off value for group2
Setting range: 0 - 100 %
Factory setting: 45 % *
45 %
OFF Value Group2
Controller Setup
nmin at Group2
Minimum Value for Group2
Setting range: 0 - 100 %
Factory setting: 20 % *
20 %
nmin at Group2
*
Display as long as no group assignment via analogue output, relay, MODBUS:
|
- - - -
|
Example version
“
1
”
: Two controlled groups
MODBUS
Master
S
ig
n
a
l
Controller
Slave
G1
M
Analog
In
0 – 10 V
Analog
In
2A
Analog Out
A1
5A
Analog Out
A2
0...100 %
Controller
Slave
G2
M
Analog
In
0...100 %
0 – 10 V
11.09.2014
v_2nd_gr_analog_cxe_master.vsd
Second Group over analog out-
put
MODBUS
Master
S
ig
n
a
l
Controller
Slave
G1
M
Analog
In
MODBUS
2A
1A (1D+), 1B (D-)
5A
0...100 %
Controller
Slave
G2
M
0...100 %
11.09.2014
v_2nd_gr_modbus_cxe_master.vsd
A (D+)
B (D-)
A (D+)
B (D-)
Second Group over MODBUS
output
11.09.2014
v_cxe_2nd_group_analog_modbus_dia.vsd
80
70
60
50
40
30
20
10
10
20
30
40
50
60
70
80
90
100
0...100 %
0
90
100
Analog / MODBUS Out
2A = Standard
nmin @ G2 = 20 %
Analog / MODBUS Out
@ G1 = 2A
Analog / MODBUS Out
@ G2 =
5A
x1
x
1.
4
G 1
G 2
G2 ON = 50 %
G2 OFF = 45 %
A
n
a
lo
g
O
u
t
[V
]
1
2
3
4
5
6
7
8
9
1
0
M
O
D
B
U
S
O
u
t
[%
]
S
MODBUS Out:
speed setting over MODBUS
Analog Out:
speed setting over analog output 0 - 10 V
G1:
Group 1
G2:
Group 2
S:
Modulation level of the controller in %
G 2 ON:
Group 2 ON value
G2 OFF:
OFF Value Group2
nmin @ G2:
nmin at Group2
Analog / MODBUS Out Standard:
Diagram wihout group control
Function
If the modulation level of the controller exceeds the switch-
on point of group 2 (On Value Group2), group 1 is reduced
to
“
n-min at Group2
”
. From here on both groups run parallel
at maximum power.
If group control is activated (Function =
|
5A
|
) the gradient of
the output curve of group 1 is automatically increased by
factor 1.4 (gradient without group control = 1).
Operating Instructions
UNIcon MODBUS Master
Programming
L-BAL-E207-GB 1723 Index 003
Part.-No.
61/114