Effective Date: 2/04
IL17574C
Page 3-15
IQ 300
Effective Date: 2/04
Page 3-15
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3.3.5
Inputs and Outputs
(IQ 330 and IQ 330M only)
The IQ 330 offers additional inputs and outputs. In order to achieve the emissions
and immunity standards, shielded cable should be used. The cable should be
grounded on the non-IQ Base side of the cable. These inputs and outputs include
the Digital Inputs labeled IN1 and IN2, the Analog Input labeled AN1 and the two
Outputs labeled A1 and A2.
Digital inputs and long Modbus responses compete for the same processor
bandwidth. In order to ensure accurate input readings, limit block requests in
Modbus to 3 variables (6 Modbus registers) when reading digital inputs with pulse
width of 200 ms between 5 and 10 Hz. Limit block requests in Modbus to 6
variables (12 Modbus registers) when reading digital inputs with pulse width of 200
ms.
A1-1
A1-2
+ V
A2-1
A2-2
+ V
Maximum Input Voltage: 125 Vac / 176 Vdc
Maximum Current Rating: 96 mA
Input/Output Isolation
Voltage:
3750 Vrms
A1-1
A1-2
+ V
A1-1
A1-2
+ V
A2-1
A2-2
+ V
A2-1
A2-2
+ V
Maximum Input Voltage: 125 Vac / 176 Vdc
Maximum Current Rating: 96 mA
Input/Output Isolation
Voltage:
3750 Vrms
AN1R
AN1I
4 – 20 mA
AN1R
AN1I
4 – 20 mA
AN1R
AN1I
4 – 20 mA
IN1R
IN1I
IN2I
IN2R
IN1R
IN1I
IN2I
IN2R
IN1R
IN1I
IN2I
IN2R
Figure 3.17 Inputs and Outputs
