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