necessary)
• H5-12 (0x43D): Run command, default=0 (bit 0=forward start/stop, bit 1= reverse
start/stop)
• b1-01 (0x180): Frequency Reference selection 1, default = 2 (via Modbus)
• b2-01 (0x181): Run command selection 1, default = 2 (via Modbus)
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
• Eventual 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).
LS
LS frequency converters are controlled via Modbus. Communication, alarms and certain indications
can be read:
Address Modbus register Name Scaling Type
27 30027,40027 FB Status word - Binary
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