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[Key points for selecting a UPS based on the usage environment] Transport elevators and sheet shutters
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In logistics and building management, transport elevators and sheet shutters are important pieces of equipment that are responsible for moving cargo, ensuring safety, and improving work efficiency.
If a power outage or power problem occurs, these facilities will stop functioning, significantly impacting business operations. To avoid such risks, the introduction of Uninterruptible Power Supplies (UPS) is being considered.
However, when installing a UPS in a transport elevator or sheet shutter, there are issues specific to motor-driven systems, and if you select a UPS without understanding these, you will encounter problems such as the UPS stopping or equipment breaking down after installation.
This article will explain in detail the risks of not having a UPS, common issues, and the features of recommended UPSs.
If a power outage occurs without a UPS, not only will the transport elevators and sheet shutters stop, but operations and equipment will be seriously affected.
Here we will take a closer look at specific problems and their background.
Elevators installed after September 2009 are equipped with an "automatic landing device in the event of a power outage" that automatically operates the elevator to the nearest floor in the event of a power outage. However, if there is no backup power source (such as a UPS) for the device, the elevator will not be able to automatically land at the nearest floor.
With sheet shutters, the entrances and exits of warehouses and factories remain closed, completely halting the loading and unloading of goods. When logistics operations come to a halt, shipping and delivery delays occur, leading to a loss of trust and losses for customers.
Example: A power outage occurs at a large logistics center, and trucks are unable to load cargo because the sheet shutters won't open, resulting in delays and losses of several hours.
When a motor suddenly stops during a power outage, a large load is placed on the brakes and gears, causing wear and tear.
Furthermore, if motors or control panels operate with an unstable power supply, overcurrent and overvoltage can occur, leading to damage to electronic components.
As a result, there are cases where the system does not function properly even after restarting after a power outage.
The transport elevators and sheet shutters store operating conditions and log data.
If this data is corrupted during a power outage, it will need to be reconfigured or adjusted, and recovery may take several hours or even days.
In addition, recovery work will have to wait for the manufacturer or maintenance company to respond, which may result in a prolonged suspension of business operations.
Installing a UPS can reduce the risks of power outages, but there are issues specific to transport elevators and sheet shutters.
Here we will discuss two major issues in detail.
The first issue is "overload due to starting current."
Motors in transport elevators and sheet shutters generate a "starting current" that can reach several times the rated current when they start up. For example, the current during startup can be more than five times the current during normal operation. This temporary overload can cause the UPS to activate its protective function and shut down.
UPSs are typically designed for a rated load. To withstand the starting current, the UPS must have a larger capacity. However, increasing capacity increases costs dramatically.
To solve this problem, it is important to select a UPS with high overload capacity.
The second challenge is the limited installation space.
The machine rooms and control panel areas of transport elevators are often packed with only the bare minimum of equipment, and large, heavy UPSs often cannot be physically installed due to constraints such as floor space, aisle width, and maintenance work space.In particular, in existing buildings and older facilities, the machine rooms themselves are often small, leaving no room to add new equipment.
A small, lightweight UPS with flexible installation options can be used in a variety of layouts, including wall mounting and shelf placement.
SANYO DENKI 's UPS "SANUPS N11D" has high overload resistance and flexible installation capabilities, making it the ideal UPS for transport elevators and sheet shutters.
Even during backup operation, it can withstand an overload of 200%*1, powerfully supporting the stable operation of equipment that temporarily requires large amounts of power, such as transport elevators, robots, and motor-driven devices.
With a normal UPS, it is necessary to select a UPS with a large capacity to accommodate temporary overloads, but with SANUPS N11D, you can select a UPS with a smaller capacity than usual to match the equipment, reducing the cost of installing the UPS.
*1 1 second for lead battery and lithium ion battery models, 0.2 seconds for EDLC models
For the first time in the industry*2, the N11D-Li is a long-life, lightweight lithium-ion battery model for single-phase, two-wire UPS systems, and the N11D-C is an EDLC model suitable for compensating for momentary voltage drops, in addition to the lead-acid battery model (N11D). You can select the model that best suits your application and maintenance requirements.
Its slim design allows it to be wall-mounted and easily incorporated into control panels and equipment. The UPS unit and battery unit can be installed separately*3, greatly expanding the flexibility of installation location.
*2 As of January 16, 2026, according to our research. For UPS with single-phase, two-wire power supply.
*3 Lead-acid battery model, lithium-ion battery model.
▼Lineup
We offer a lineup that is ideal for backing up transport elevators and sheet shutters.
January 16, 2026 SANUPS | Product News | Product Information | SANYO DENKI CO., LTD.
【Note】
This product is designed for general use and cannot be used for the following purposes:
●Emergency power supply for firefighting equipment based on the Fire Service Act and Fire Prevention Ordinance
●Backup power supply for fire prevention and disaster prevention equipment based on the Building Standards Act
In addition, elevators, lifts, and other elevators are subject to relevant laws and regulations, including the Building Standards Act and the Industrial Safety and Health Act, as well as technical standards specific to elevators.
If you intend to use this product in such equipment, please confirm its compliance with applicable laws and regulations and make appropriate decisions.
Supervisor: Ken Furuhata, Chief Engineer, Design Department SANYO DENKI CO., LTD. Electronics Company Ltd.
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