VAF instruments 667 - 6.6 MODBUS INPUT FOR T-SENSE AND TT-SENSE; 6.7 ANALOGUE INPUT FOR TORQUE-, SPEED- AND POWER

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6.6 MODBUS INPUT FOR T-SENSE
®
AND TT-SENSE
®
The T-Sense
®
or TT-Sense
®
signal will be connected to the J1 Modbus input connection (Channel 1).
When a second T-Sense
®
or TT-Sense
®
is installed the signal will be connected to the J2 Modbus input
connection (Channel 2).
Both the J1 and J2 Modbus input connections (resp. channel 1 and 2) can also be used for connection
of Auxiliary Engines (AE) input. See section 6.9.
In such situation two, or more, Modbus input signals can be connected to the J1 and/or J2 Modbus input
connection.
Therefore the inputs will be set on “Channel 1” or “Channel 2”, with each input a different slave address
equal to the slave address of the connected device.
The T-Sense
®
or TT-Sense
®
stator box slave address is factory set by VAF Instruments.
6.7 ANALOGUE INPUT FOR TORQUE-, SPEED- AND POWER
It is possible to connect a torque-, speed- and power-meter to the SPU3 system. This torque-, speed and
power-meter needs to be equipped with analogue 4–20mA outputs.
The analogue 4–20mA signals can be connected to the SPU3 (Backplane-X) representing the
torque-, speed- and power-signal.
Analog input
Signal
Type of input
signal
Terminal number on SPU3
Backplane-`X`
Shaft torque signal
4–20mA - active
Terminal nr. X1 and X2
Shaft speed signal
4–20mA - active
Terminal nr. X3 and X4
Shaft power signal
4–20mA - active
Terminal nr. X5 and X6
The number of Backplane-“X” might differ per configuration, depending on the total system.
Please refer to the connection diagram what comes with the project.
Make sure that the torque meter settings in the SPU3 system itself are set correctly. You are able to
adjust these torque meter settings in the “Settings menu” (advanced level only).
When passive analogue outputs have to be connected to the SPU3 system please contact VAF
Instruments.