User's Manual

Shunt signal
52 A3276-8.0 HBM: public T40FM
7 Shunt signal
The T40FM torque flange delivers an electrical shunt sig
nal that can be activated 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 ac
tivation, adjust the amplifier output signal to the shunt
signal supplied by the connected transducer, to adapt the
amplifier to the transducer.
Information
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 plug 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 measuring mode.
The maximum permissible voltage is 30 V, current con
sumption at nominal (rated) voltage is approx. 2 mA and
at maximum voltage, approx. 18 mA. The voltage for trig
gering 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 software in HBM system solutions.