Rockwell Automation 1769-OB32 Installation Instructions - Manual (Page 17)

Compact 32-point Solid-state 24V dc Source Output Module 17
Publication 1769-IN031A-EN-P - April 2003
Output Specifications
Specification 1769-OB32
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 32
Bus Current Draw (max.) 300 mA at 5V dc (1.5W)
Heat Dissipation 4.5 Total Watts (The Watts per point, plus the minimum Watts,
with all points energized.)
Signal Delay (max.) – resistive load turn-on = 0.1 ms
turn-off = 1.0 ms
Off-State Leakage (max.)
(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 (min.) 1.0 mA
On-State Voltage Drop (max.) 1.0V dc at 1.0 A
Continuous Current Per Point (max.)
See the derating graphs on page 18. 0.5A at 60°C (140°F)
1.0A at 30°C (86°F)
Continuous Current Per Common (max.)
See the derating graphs on page 18. 4.0A at 60°C (140°F)
8.0A at 30°C (86°F)
Continuous Current Per Module (max.)
See the derating graphs on page 18. 8.0A at 60°C (140°F)
16.0A at 30°C (86°F)
Surge Current (max.)
(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.
2.0A (Repeatability is once every 2 seconds for a duration of 10
msec.)
Power Supply Distance Rating 6 (The module may not be more than 6 modules away from the
power supply.)
Output Point to Bus 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 to 15 (internally connected to DC COM 1)
Group 2: outputs 16 to 31 (internally connected to DC COM 2)
Vendor I.D. Code 1
Product Type Code 7
Product Code 73