Digital Input / Output Module P30A, P31, P33; Introduction; Features - Novatech Bitronics M87X Series Manual

9.0 DIGITAL INPUT / OUTPUT MODULE P30A, P31, P33

9.1 Introduction

The high speed Digital I/O module features 8 (P30A) or 16 (P31) inputs that are fully
isolated from each other and the case. The terminals of 4 of these are shared with 4
output relays. Other than the terminals themselves, the output relay circuits are
completely independent of the inputs. The P33 has no inputs and 8 output relays.
Because the output relay terminals are shared with inputs, they may be monitored to
provide feedback verifying proper operation of output commands. Protection and control
industry standard-type output relays ensure system reliability.
The inputs are jumper-selectable for input level and threshold (thresholds of 15Vdc or
70Vdc). The outputs are jumper-selectable for "normal" output state (Normally Open or
Normally Closed) and for relay condition (energized or de-energized). The input LED
indicator is green when an input is driven high, and the output LED is amber when an
output is activated (relay activated).
The Digital I/O Module inputs can be read by the Host Processor Board and/or the Analog-
Digital Signal Processor Board. Input transition times are time-stamped. Outputs can be
turned on or off by the Host Processor based on commands received over communication
links, or by internal states generated by energy pulses, recorders, etc.
The Analog-Digital Signal Processor Board reads the state of the digital inputs every time it
samples the analog inputs, and the sample rate of the digital inputs is tied to the frequency
of the analog inputs. The Waveform and Disturbance Recorders may be configured to
record the status of the digital inputs.
Consult the appropriate Protocol manual for information on reading the digital inputs or
setting the digital outputs.

9.2 Features

Two input ranges, for nominal system voltages of up to 100V or from 100 to 300V.

Inputs protected against continuous overload to 300Vdc on low input range.

All Input / Output terminals protected with internal transient limiting devices.

Protection and control industry standard-type output relays and circuitry ensure system

reliability.
Outputs on the P30A/P31 have "wrap-around" inputs to allow confirmation of circuit

operation.
2000Vac, 1min isolation, I/O to Case; 1500Vdc, 1min isolation, I/O to I/O

Removable terminal block for ease of installation

ML0021 August 15, 2018
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