IC-MQ Datasheet, PDF (36/39 Pages) IC-Haus GmbH – PROGRAMMABLE 9-BIT Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

iC-MQ PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev D4, Page 36/39
When iC-MQ is used in 24 V systems, with supply volt-
ages of 5 V to 30 V for example, it can be combined
with iC-DL which acts as a line driver with an integrated
line adaptation feature (Figure 14).
A reduced driving capability of iC-MQ is sufficient
(SIK = 00) to operate iC-DL so that the current required
is reduced at the 5 V end. If an LDO voltage regulator
is selected, the circuit is suitable for a supply range of
4.5 V to 30 V without any changes having to be made.
The wiring of the iC-DL error message output (pin
NER) to the PLC is not necessary if the iC-MQ error
mask is set for output shutdown (EMASKO). In the
event of error the pull-down current sources ensure
that a low signal is produced at the iC-DL inputs on
all lines which the controller recognizes as an error. If
there is an overload at the outputs, via its temperature
protection unit iC-DL itself makes sure that the driver
outputs are shutdown (tristate) - which the controller
also classes as an error. In addition iC-MQ can trans-
mit the overload to the error memory as a system error
when information is returned to the bidirectional I/O pin
ERR (as shown).
iC-MQ
iC-DL
Figure 14: Example application with a 24 V line driver