Section 2 Transmission Media and Components Network Voltage Tolerance Design Stack Up
9ARD000015-600 55
Network Voltage Tolerance Design Stack Up
Table 49 outlines the stack up of tolerances leading to +/- 4% required by the
DeviceNet. By using the specification provided, performance trade-offs can be
made on the power supply and the Schottky diode specifications to meet the
Temperature Coefficient 0.03% per degree C maximum
Output Ripple 250 mV p-p
Load Capacitance Capability 7000 uF maximum
Temperature Range Operating
(1)
: 0° C ... +60° C
Nonoperating: -40° C ... +85° C
Inrush Electric Current Limit Less than 65 Amps peak
Over Voltage Protection Yes (no value specified)
Over Electric Current Protection Yes (electric current limit 125% maximum)
Turn-on Time (with full load) 250 msec maximum/5% of final value
Turn-on Overshoot 0.2% maximum
Stability 0 to 100% load
(all conditions)
Isolation Output isolated from AC and chassis ground.
Output Voltage 24 Volts +/- 1%
Output Electric Current Upto 16 A continuous
Surge Electric Current Capability 10% reserve capability
(1) De-rating acceptable for 60° C operation.
Table 48. DeviceNet Power Supply Specifications (Continued)
Specification Parameter
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