SECTION 9.2 +5 VDC INPUT The IM481H requires an external regulated +5Vdc power supply. The supply is connected
between pins 11 (ground), and 14 (+5vdc). A 22 microfarad 10v tantilum capacitor must
be placed as close to the IM481H as possible between the +5vdc input pin (14) and
ground.
The +5vdc supply ground and the motor supply ground should not be connected together
at the power supplies. The common ground connection between the motor power supply
and the +5vdc supply should be made at the ground pin of the additional electrolytic
capacitor used for the motor supply (see section 9.1)
Figure 5 shows the proper connection of the external +5vdc supply to the IM481H.
NOTE:
14 Care should be taken when using this supply not to couple noise from
external circuits into the IM481H which could cause erratic operation or
damage.
+5VDC
SUPPLY
Figure 5
MOTOR
SUPPLY