12
FLEX Ex 24V dc Non-Isolated Source 4 Output Module
Publication
1797-5.6 - December 2003
Specifications - 1797-OB4D 4 pt Non-Isolated Source Output Module
Number of Outputs
4, non-isolated, sourcing
IS Output Type
EEx ia IIB/IIC T4,
AEx ia IIC T4,
Class I, II, III Division 1 & 2 Groups A-G T4
IS Module Type
EEx ib IIB/IIC T4,
AEx ib IIC T4,
Class I Division 1 & 2 Groups A-D T4
V-I Characteristics
Refer to “Output Voltage/Current Capability” on
page 27
Load Range
30-5000
Ω
Fault Detection
Fault bits in data table and LED (per channel) blinking
red (1 Hz)
Electronic Protection
Lead break, overload, short circuit
Maximum Output
Delay Times
OFF to ON
ON to OFF
<1.2ms
<1.2ms
Indicators
4 yellow status indicators
4 red fault indicators
1 green module power indicator
Output (Intrinsically Safe)
(16 pin Male and Female
Flexbus Connector)
U
i
< 5.8V dc
I
i
< 400mA
L
i
= Negligible
C
i
< 1.35µF
Isolation Path
Output to Power Supply
Output to Flexbus
Power Supply to Flexbus
Output to Output
Isolation type
Galvanic to DIN EN 50020
Galvanic to DIN EN 50020
Galvanic to DIN EN 50020
None
Power Supply
(+V, -V Intrinsically Safe)
U
i
< 9.5V dc
I
i
< 1A
L
i
= Negligible
C
i
= Negligible