Shunt Signal - HBM T40FM Mounting Instructions

T40FM
6

Shunt signal

The T40FM torque flange delivers an electrical shunt signal that can be activ-
ated from the amplifier for measuring chains with HBM components. The
transducer generates a shunt signal of about 50 % of the nominal (rated)
torque; the precise value is specified on the type plate. After activation, adjust
the amplifier output signal to the shunt signal supplied by the connected trans-
ducer to adapt the amplifier to the transducer.
The transducer should not be under load when the shunt signal is being
measured, as the shunt signal is mixed additively.
Triggering the shunt signal
Applying a separated extra‐low voltage of 5  30 V to pins 6 (+) and 7 ( ) at
connector 1 or 3 triggers the shunt signal.
The nominal (rated) voltage for triggering the shunt signal is 5 V (triggering at
U > 2.5 V), but when voltages are less than 0.7 V, the transducer is in meas-
uring mode. The maximum permissible voltage is 30V, current consumption at
nominal (rated) voltage is approx. 2mA and at maximum voltage, approx.
18mA. The voltage for triggering the shunt signal is electrically isolated from
the supply and measuring voltage.
Tip
The shunt signal can be triggered by the amplifier or via the operating soft-
ware in HBM system solutions.
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HBM