Manuale Utente Honeywell Scheda Di Rete Hc900 [171/228 Pagine]

Honeywell scheda di rete HC900

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Specifications - Analog Input, Analog Output Modules: Common Features

Revision 5 HC900 Hybrid Controller Installation and User Guide 161

9/03

Analog Input, Analog Output Modules: Common Features

Feature Description

Micro Controller

Motorola 68HC11 micro controller

12k One-time programmable PROM

built-in diagnostics

Analog Input Module

Feature Description

Input types

RTD, T/C, Ohms, mV, Volt, mA.

See Table 38 for PV Input types and ranges.

Input Impedance

10 megohms for T/C and mV inputs; > 1 megohm for volts and 250 ohms for

mA inputs

Number of inputs

8 per module

Input Device

Photo-MOSFET Relay

Isolation

400 Vdc point-to-point, solid state switching; 1k Vdc to logic

RTDs are isolated in pairs (I

RTD

is common to two inputs.)

Noise Rejection

Series mode > 60dB

Common mode > 130 dB at 120 Vac

Burnout

T/C, mV, V (except for following ranges) are configurable for Upscale,

Downscale, Defined Value, or None:

Volt: -500 mV to 500 mV; -1 V to 1 V; -2 V to 2 V; -5 V to 5 V; 0 V to 10 V; -10

V to 10 V; inherent to zero volt

RTD: Inherent Upscale

MA: Inherent Downscale

T/C Break Detection

Via current pulse

Faulty thermocouple detection

If greater than 100 ohms, a warning status is provided as an output for the AI

block

Accuracy

Factory configured accuracy - ± 0.1% of range

Cold Junction accuracy = ± 0.5% of range

Field calibration accuracy = ± 0.05% of range

Reference conditions:

Temperature = 25 °C ± 3 °C (77 °F ± 5 °F)

Humidity = 45% to 55% RH non-condensing

Line voltage = Nominal ± 1 %

Source resistance = ohm

Series mode and common mode = 0 V

Frequency = Nominal ± 1 %

Temp. effect on Accuracy

±0.01% of full scale/°C

A/D converter

One per card

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