| Introduction - Weidmuller
Power Delivery Solutions |
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| One of the biggest challenges facing process
control and manufacturing automation managers today is minimizing unplanned
downtime and their associated costs. Weidmuller's Reliable Power Delivery
Solutions for control electronics offer solutions to these problems |
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| In analyzing the cause for unplanned plant
standstills, Weidmuller identified a number of problems attributed to
inadequate design practices for automation and control electronics when uptime
is a key design goal. Weidmuller has developed its Power Delivery Solutions for
control with high uptime as a key design objective. |
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| Among others, these solutions address the problem
of protecting switched mode DC power supplies against load failures. Switched
mode, regulated DC power supplies are designed to initiate a protective
self-shutdown routine in the event of an overload or short-circuit condition at
their output. When this happens, the switched mode power supply may stop
providing power to its DC circuits. |
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| However, despite the fact that the switched mode
DC power supply has protected itself from damage, the circuits that depend on
this power supply may experience a loss-of-power condition or malfunction. This
can likely create an entire control panel shutdown and ultimately unplanned
service interruptions. Therefore, it is necessary to isolate overloads or
short-circuit occurrences from the rest of the active elements in a control
panel. Weidmuller has solved this problem through its WAVEguard electronic
fusing system, which prevents load failures from propogating back to the DC
power delivery system, prevents drops in DC power to the control panel, and
eliminates nuisance-tripping. |
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| In addition, Weidmuller's electronic fuses
improve failure identification and location time and reduce associated costs,
since these fuses can be wired to a control room, enabling personnel to
remotely identify the failure without testing multiple load circuits. This can
cut troubleshooting time and associated costs by more than 50 percent, and
ultimately prevent further revenue losses. |
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| Diode moduled ane another component of
Weidmuller's Power Delivery Solutions for control that can increase the
reliability of a process control system. They enable parallel connectivity of
two or more power supplies for power redundancy, or they can be used to deliver
increased power to the load. |
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| Weidmuller offers a full range of single phase
and three phase advanced and general purpose Power Delivery Solutions available
in 24 VDC and other output voltage variants. All power supplies have power
boost capability and all Power Delivery Solutions components are TS-35
DIN-rail-mountable. |
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| No industry can afford unplanned downtime because
of an overload condition or short-circuit in control panel electronics.
Weidmuller support teams conmbined with products like electronic fuses, diode
modules, switched mode DC power supplies, and battery backup units (BBUs)
provide the most reliable Power Delivery Solution available for process control
and automation control panels in the industry. |
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| Solving DC Power System Problems
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Switch mode DC power supplies are typically used
for power delivery in control panels, but even a highly reliable power supply
is not sufficient to ensure a reliable Power Delivery Solution. A faulty load
may cause a protective power supply shutdown, essentially bringing down all
circuits feeding off of the supply. A faulty AC Power Distribution System
affects both the load side and the AC input side, so AC POwer Distribution
System break downs must be prevented.
Weidmuller Power Delivery
Solutions are designed to solve these common DC power for control problems:
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- Protect and Monitor DC Power of Contol Systems
- Provide Uninterrupted DC Power with Redundancy
- Provide Uninterrupted DC Power with Redundancy and
Fault Indication
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- Guarantee DC Power to Critical Loads
- Eliminate Step-down Transformers
- Manage Medium and Large Inductive Loads
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