CORRIGO E VENTILATION VARIABLES FOR EXOLINE AND MODBUS 3.6 MANU

74 Chapter 7 Frequency converters
Omron frequency converters are controlled via Modbus. Communication, alarms and certain
indications can be read.
The following signals can be read/written from/to the frequency converter:
Address
Modbus register
Name
Scaling
Type
3
30003, 40003
FB Speed reference (SP)
10
%
2
30002, 40002
Password
-
-
36
30036, 40036
Motor frequency
100
Hz
63
30063, 40063
Motor speed
1
+/- Rpm
39
30039, 40039
Current
10
A
40
30040, 40040
Output
10
kW
38
30038, 40038
DC voltage
10
V
33
30033, 40033
Status change
-
Binary
34
30034, 40034
Alarm
-
Binary
93
30093, 40093
Acc. Motor output
1
kW
The variables presented in the display of the Corrigo are:
Frequency (Hz), Current (A), Output (kW), Accumulated power (kWh).
Emerson Commander
Connections RS485-RJ45:
 RJ45:2 (orange) is connected to B on port 1 or 2
 RJ45:7 (white/brown) is connected to A on port 1 or 2
 Possible termination resistor is connected between RJ45:1 (white/orange) and RJ45:8 (brown).
If Modbus communication is not initialised after powering up, disconnect the termination resistor and
try again.
Terminals
 Connect terminal B4 (Drive enabled) to B2 (+24V)
 Connect terminal B5 (Forward) to B2 (+24V)
Parameters
The following parameters must be set from the display of the frequency converter:
 44: Slave address, set to = 1 (default) for Supply air fan and = 2 for Exhaust air fan
 43: Baud rate: 9.6 (default: 19.2)
 Default values should be used for remaining parameters.
Changing parameters
 Deactivate the unit. The display should read “iH 0.0”. This is performed by
opening terminal B4.
 Set parameter 10 to ”L3”, i.e. all parameters up to and including 95 can then be altered.
 Set parameter 43 to 9.6 (9600 baud).