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ANALOG IN 15 BIT VOLTAGE/CURRENT 8CH IC220ALG221
Electrical Isolation
Figure 4
Electrical isolation of the individual
function areas
Connection Notes
Do not simultaneously apply current and voltage signals to one input channel as you will
not obtain valid measured values.
Do not connect voltages above ±2.5 V to a current input. The electronics module will be
damaged if the maximum permissible current of ±100 mA is exceeded.
Always connect the analog sensors using shielded, twisted-pair cables.
Connect the shielding to the VersaPoint terminal using the shield clamp. The clamp con-
nects the shield directly to FE (functional earth ground) on the terminal side. Additional
wiring is not required.
Isolate the shielding at the sensor or connect it with a high resistance and a capacitor to
the PE potential.
4
6226B_GE
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