Installation and Operating Specification EUR EC
Example version "2" via MODBUS
MODBUS Master
1A (1D+), 1B (D-)
2A
5A
11A 12A
MODBUS
A (D+)
B (D-)
Controller
Slave
0...100 %
M
G1
A (D+)
B (D-)
Controller
Slave
0 / 100 %
M
G4
Function
Group 1 is continuously controlled (0 - 100 %), the other groups are switched on and off depending on
the degree of modulation (0 / 100%).
If the modulation level exceeds the switch-on point "ON Value Group2", the MODBUS Master switches
on the second group and the speed of the first group is reduced to an adjustable minimal value "nmin
at Group2".
Then the speed of the first group increases to maximum within the remaining range.
If a third group is programmed up to switch-on point "ON Value Group3" etc.
Switch-off point "OFF Value Group2" at diminishing speed requirement.
9.8.10
Display text for external message
Controller Setup
External error
External message
RCD Residual-current-operated protective device
L-BAL-E274-GB 1914 Index 003
On controlled group and three switched groups
Analog
In
100
A (D+)
B (D-)
50
Controller
Slave
0 / 100 %
M
G2
A (D+)
MODBUS Out: speed setting over MODBUS
B (D-)
S: Modulation level of the controller in %
Controller
Slave
G1: Group 1
G2: Group 2
0 / 100 %
G3: Group 3
G4: Group 4
M
G2, G3, G4 ON: ON Value Group2, 3, 4
G2, G3, G4, OFF: OFF Value Group2, 3, 4
nmin@G 2, 3, 4: nmin at Group2, 3, 4
G3
MODBUS Out Standard: Diagram wihout group control
25.08.2016
v_group_var_4_dig_out_cxe_master.vsd
Alternatively to the "External Error" display when an external message occurs (see IO
Setup / Digital Inputs "D1" / "D2" the following error texts can be programmed:
EC Motors
•
Filter
•
Frost protection
•
Adiabatik
•
Firealarm
•
Pressure switch
•
Gas alarm
•
Water alarm
•
RCD
•
Exhaust air
•
G3 ON @ 70 %
G2 ON @ 50 %
90
80
70
60
G1 2A
40
30
G3 OFF
20
G2 OFF
10
0
10
20
30
40
50
60
Part.-No.
55/117
Programming
G4 ON @ 85 %
MODBUS Out
2A = Standard
nmin @
G4= 40 %
G4 OFF
nmin @
G3= 30 %
nmin @
G2= 20 %
70
80
90 100
0...100 %
v_cxe_4_group_digswitch_dia.vsd
S
11.09.2014