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Product Description
SBM51/06
Datasheet 2.50-40.051-71-EN
Project Planning: Frequency Inverter - SBM51/06
Commissioning (Using the VLT 6000 as an Example)
You can connect one to eight different types of Danfoss frequency inverter to theSBM51/06.
For commissioning, make the following settings on the frequency inverter:
■
“FI Parameter 500, protocol: FC protocol (default setting)
■
“FI parameter 501, bus address: set an address between 1 and 8
■
“FI parameter 502, baud rate: 9600 Bd (default setting)
■
“FI parameter 106, rated motor speed: is important when the speed is to be displayed on the
parameter “User-defined display 2253/01”.
■
“FI parameter 006, unit of the “Free display”: 0, when the SBM51/06 is to perform configuration
for determining speed.
Refer to the commissioning instructions from Danfoss for further information.
Determining Speed (Using the VLT 6000 as an Example)
Parameter 2253/01 can be used to determine the speed if parameter
2252/01 “Absolute Speed”
is
not supported by the FI type at hand. To do this, enter the nominal motor speed for FI parameter 005
(maximum value for user-defined display) on the frequency inverter. This value must completely
match the output frequency value.
FI parameter 2253/01 then outputs the speed.
If the SBM51/06 is to apply the speed via parameter
2253 “Analog actual value 7”
, FI parameter
006 (unit of the scaled display) must be left at 0 (= default setting).
The unit from FI parameter 006 (nominal motor speed) is automatically set to rpm.
If the free display is to be used in another way, FI parameter 006 (unit of the scalable value) must be
set such that it is not equal to “0”. In this case, automatic configuration of the SBM51/06 remains
undone. The value displayed in the first respective software menu, SBM51 gateway, parameter
2253
“Analog actual value 7”
is then a different value.
Malfunction messages
The parameter
2222 “Malfunction”
of the first respective software menu, SBM51 gateway, is
generated in the frequency inverter using all bits from the frequency inverter alarm word.
Every alarm in the frequency inverter triggers the following actions:
■
Sets the malfunction message contact and sets parameter
2222 “Malfunction”
to “1”
■
Switches the frequency inverter off
Acknowledge the alarm by pressing the reset button on the frequency inverter. Alternatively, there is
a way to acknowledge alarms via the DDC system (see page 19).
Warnings do not lead to a collective malfunction message.
Thermal Monitoring
Parameter
2224 “Digital actual value 2”
of the second respective software menu, SBM51 gateway,
indicates motor thermal overload.
Thermal overload on the motor is determined either via monitoring of the electrical values of the motor
in the frequency inverter or by a thermistor installed in the motor. The motor protection type is set on
the FI (e.g. using parameter 117 for the VLT6000).
Thermal monitoring messages for the FI are reported in the collective malfunction message
parameter
2222 “Malfunction”
of the first respective software menu, SBM51 gateway.
V-Belt Monitoring (Load shedding)
On the frequency inverter (e.g. using parameter 221 for the VLT6000), set the
Lower current limit
that corresponds to load shedding due to a V-belt tear. Doing this makes it possible for parameter
2228 “Digital actual value 6” of the second respective software menu, SBM51 gateway, to display the
“V-belt malfunction” message correctly.
