Multidrop Configuration | Omega Vehicle Security DRA-RTM-8 manual

11. MULTIDROP CONFIGURATION

In the disabled state (E=0), the multiplexer outputs no current and exhibits a high Z state. This mode allows the connection of several DRA-RTM-8 units to one PLC's analog input, by tying their output terminals and the address lines in parallel, and applying individual Enable lines to select the desired multiplexer by disabling all but one (see fig 7).

12. SPECIFICATIONS

ANALOG INPUTS:

RTD INPUT:

Zero adjustability: Span adjustability:

Lead Compensation Error: Max Lead Resistance: Pt-100 linearization:

CURRENT INPUT

Max Input Current: Reverse Polarity Protection:

Output Accuracy (Refer to Current Input):

CONTROL INPUTS:

Logic:

Logic Levels:

OUTPUT:

SWITCHING TIME:

INDICATORS:

SUPPLY VOLTAGE:

SUPPLY CURRENT CONSUMPTION: FUSE:

TEMPERATURE STABILITY: OPERATING TEMPERATURE: STORAGE TEMPERATURE: HUMIDITY:

HOUSING:

Box:

Terminal:

WEIGHT:

DIMENSIONS:

ANALOG +

ANALOG -

PLC

ANALOG

INPUT

MODULE

ENABLE 1

ENABLE 2

MSB DISCRETE

OUTPUT

LSB MODULE

Figure 7.

8, Pt-100 Channels a=0.00385

8, 0/4-20mA Channels

50 to +200 oC

50 to 750 oC

0.025 oC for 10W lead resistance 120W two ways

0.1% of span max.

30mA

Yes

0.1% of span max.

4 Address

1 Enable input

True High or True Low (User selectable) Low: "0" < 0.5V High: 5 < "1" < 60V

4-20mA, Current Loop

< 20mSec (into a resistive load)

1 Yellow LED, Power-On indicator

8 Red LEDs, current activity indicators

24 10% Vdc (regulated)

120 mA 10mA

150 mA, Fast Blow (5x20mm)

0.01% of span/1 oC

0 to 60 oC (32 to 140 oF)

-25 to +85 oC (-13 to 185 oF)

5 to 95% Relative humidity, non-condensing

Plastic Polycarbonate According to IP50 DIN 40050 According to IP20 DIN 40050

0.9 Kg. (2.0 lb.)

73Hx200Wx121mmD (2.88"x7.88"x4.76")