RS485 Remote I/O
Instrumentation Inputs

q

Number of channels

8

Lowest voltage range

+/- 0.062 Volts

Maximum voltage range

+/- 10 Volts

Auto-polarity current range

0-20 mA and 4-20 mA

Thermocouple types (see note 1)

J,K,E,R,T,B,C,N,S

A/D resolution

16 bits

Full scale accuracy (@ 20 ° C)

+/- 0.02%

Input span and offset adjustability

+/- 25%

Span and offset temp. coefficient

+/- 30 ppm per ° C typical

mV and voltage input impedance

200K Ohms

CMRR (at 50/60 Hz)

140 db

DMRR (at 50/60 Hz)

66 db

Common mode input voltage

+/- 25 VDC (between two input terminals), 1200 Volts (between inputs and ground)

No damage input voltage

+/- 50 VDC

Typical scan rate (all 8 channels)

800 mS - 1,000 mS, depending on

   using 100 mS / channel mode

signal types (revised 6/30/04)

   (See Notes 2 and 3 below)

Typical scan rate (all 8 channels)

300 mS - 500 mS, depending on

   using 60Hz-50 mS / channel mode

signal types (revised 6/30/04)

   (See Note 2 below)

Typical scan rate (all 8 channels)

400 mS - 600 mS, depending on

   using 50Hz-50 mS / channel mode

signal types (revised 6/30/04)

   (See Note 2 below)

Fastest scan rate (all 8 channels)

100 mS (revised 6/30/04)

   using 16 mS / channel mode

   (See Note 2 below)

Serial communication information

See System Specs

RS485 isolation

1200 Volts RMS 1 minute

Required supply voltage

10-30 VDC (1.5 watt typical)

Operating temperature range

-30 to 70° C

Storage temperature range

-40 to 85° C

Humidity (non-condensing)

5 to 95%

Flammability (module plastic)

UL 94V-0 materials

Electrical safety

UL 508, CSA C22.2/14; EN61010-1 (IEC1010), CE

EMI emissions

FCC part 15, ICES-003, Class A; EN55022, CE

EMC immunity

EN50082-1 (IEC801-2, 3, 4) CE

Surge withstand

IEEE-472 (ANSI C37.90)

Vibration

IEC68-2-6

Hazardous locations

UL 1604, CSA C22.2/213-M1987, (Class I, Div 2, Groups A, B, C, D), EN50021 (zone 2)

Marine/offshore locations

Det Norske Veritas (DNV) No. 2.4 (Class A and B)