Rockwell Automation 1769-OB8 Compact Solid State 24V dc Source, High Current Output Module - Manual (Page 16)

16 Compact™ Solid State 24V dc Source, High Current Output Module
Publication 1769-IN063A-EN-P - March 2003
Output Specifications
Specification 1769-OB8
Voltage Category 24V dc
Operating Voltage Range
20.4V dc to 26.4V dc (source
(1)
)
(1) Sourcing Output - Source describes the current flow between the I/O module and the field device. Sourcing output circuits
supply (source) current to sinking field devices. Field devices connected to the negative side (DC Common) of the field power
supply are sinking field devices. Field devices connected to the positive side (+V) of the field supply are sourcing field
devices. Europe: DC sinking input and sourcing output module circuits are the commonly used options.
Number of Outputs 8
Bus Current Draw (maximum) 145 mA at 5V dc (0.725W)
Heat Dissipation 2.20 Total Watts
(Watts per point, plus minimum Watts, with all points energized.)
Signal Delay (maximum) – resistive load turn-on =0.1 ms
turn-off =1.0 ms at 60°C maximum load 2A, minimum V in 20.4V
1.5 ms at 60°C minimum load 1mA, minimum V in 20.4V
Off-State Leakage (maximum)
(2)
(2) Typical Loading Resistor - To limit the effects of leakage current through solid state outputs, a loading resistor can be
connected in parallel with your load. Use a 5.6K ohm, ½ watt resistor for transistor outputs, 24V dc operation.
1.0 mA at 26.4V dc
On-State Current (minimum) 1.0 mA
On-State Voltage Drop (maximum) 1.0V dc at 2.0 A
Continuous Current Per Point (maximum) 2.0A at 60°C (140°F)
Continuous Current Per Module (maximum) 8.0A at 60°C (140°F)
Surge Current (maximum)
(3)
(3) Recommended Surge Suppression - Use a 1N4004 diode reverse-wired across the load for transistor outputs switching 24V
dc inductive loads. For additional details, refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-4.1.
4.0A (repeatability is once every 2 seconds for a duration of 10 ms)
Power Supply Distance Rating 8 (the module may not be more than 8 modules away from the
power supply.)
Output Point to Bus Isolation and
Output Group to Output Group Isolation Verified by one of the following dielectric tests: 1200V ac for 1
sec. or 1697V dc for 1 sec.
75V dc working voltage (IEC Class 2 reinforced insulation)
Isolated Groups Group 1: outputs 0-3 (internally connected to dc common 1)
Group 2: outputs 4-7 (internally connected to dc common 2)
Vendor I.D. Code 1
Product Type Code 7
Product Code 70