Intelligent Technologies (IT.) D77A I/O Module Products
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Discrete Combination Modules

The input and output features found in the input and output modules are also found in the combination modules.

Analog Input Modules

•Four Analog Channels — Each module has four analog input channels.
•Adjustable Input Filter — Each analog channel can be set for frequencies between 50 and 500 Hz.
•Type Selection — Each analog channel can be set as a voltage input or a current loop input.

Analog Output Modules

•Two Analog Channels — Each analog channel has two analog output channels.
•Type Selection — Each module can be set as a voltage output or a current loop output.

Approval Certifications

Table 1: Approvals/Certifications
Standard Approval/Certifications
Agency Certifications UL 508
CE (Low Voltage Directive, ATEX Directive)
CUL (CSA C22.2 No. 14)
Radiated and Conducted Emissions EN 5011 Class A
Electrical/EMC
ESD Immunity (IEC 61000-4-2) ±8 kV air, ±4 kV contact
Radiated Immunity (IEC 61000-4-3) 10 V/m 80 – 1000 MHz, 80% amplitude modulation @ 1 kHz
Fast Transient (IEC 61000-4-4) ±2 kV supply and control
±1 kV communications
Surge (IEC 61000-4-5) ±1 kV line-to-line
±2 kV line-to-ground
RF Conducted (IEC 61000-4-6) 10V, 0.15 – 80 MHz
Magnetic Field (IEC 61000-4-8) 30 A/m, 50 Hz
Ingress Protection Code IP20