Specifications

Publication 1794-SG002D-EN-P - May 2012

90 Select FLEX Ex I/O Modules

1797-OB4D Output Voltage/Current Capability

24V DC 4 Point Non-isolated Source Output Module

Specification 1797-OB4D

Number of outputs 4

Output load range 30…5000 Ω

Fault detection Fault bits in data table and LED (per channel) blinking red (1 Hz)

Protection Overload

Output delay time, OFF to ON ≤ 1.2 ms

Output delay time, ON to OFF ≤ 1.2 ms

Intrinsically safe output type II (1)2G Ex ib[ia] IIC T4

Class I,

Div. 1, Groups A-D and Class I, Zone 1,

AEx ib/[ia] IIC

Noxious gas exposure Tested to severity level G3, ISA-S71.04-1985

FLEX Ex power consumption 7.5 W @ 9V

Power dissipation 5 W

Thermal dissipation, max 17.07 BTU/hr

Dimensions (H x W x D) 46 x 94 x 75 mm (1.8 x 3.7 x 2.95 in.)

94 x 94 x 91 mm (3.7 x 3.7 x 3.6 in.) installed

Voltage