Chapter 7 IO Module
Beijing HollySys Intelligent Technologies Co., Ltd. All Rights Reserved 183
(b)
Figure 7-9 Output Setting of LK710 Fault Mode
7.2.5.3 Over Current Protection
The LK710 module is provided with over-current protection. It can protect the module in case the
instant current is too great, such as output short circuit, etc. Over current protection can be realized by
connecting to a self-recovery fuse in series in the loop, with each two points sharing a self-recovery
fuse.
Figure 7-10 Electrical Schematic Diagram of LK710 Channel over Current Protection
7.2.6 Diagnosis
LK710 can conduct field power loss detection. Such a diagnosis is a device diagnosis.
Whether to enable power loss detection can be selected via the user parameter
Field Power Loss
Detection
, which is defaulted to Enable. The modification takes effect only upon full download.
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