{"id":537,"date":"2020-03-10T07:00:00","date_gmt":"2020-03-10T07:00:00","guid":{"rendered":"http:\/\/blog.demagcranes.com\/en-us\/?p=537"},"modified":"2023-11-01T15:24:44","modified_gmt":"2023-11-01T15:24:44","slug":"adding-a-demag-dc-chain-hoist-to-an-existing-bridge-trolley-what-you-need-to-know-for-a-successful-installation","status":"publish","type":"post","link":"https:\/\/blog.demagcranes.com\/en-us\/adding-a-demag-dc-chain-hoist-to-an-existing-bridge-trolley-what-you-need-to-know-for-a-successful-installation\/","title":{"rendered":"Adding a Demag DC Chain Hoist to an Existing Bridge & Trolley- What You Need to Know for a Successful Installation"},"content":{"rendered":"\n

Picture this. You\u2019re working on adding a new Demag chain hoist to an existing bridge and trolley for your customer. You have bought all the parts and equipment you think you need. You just got done installing everything and, as you press the button on the pendant to test whether it works, nothing happens. The trolley doesn\u2019t move and\/ or the hoist isn\u2019t moving. Or maybe the LED on the hoist is on, but nothing is running. What\u2019s your next move?<\/p>\n\n\n\n

This is a common situation our technical group hears. When\nyou\u2019re replacing or adding a new Demag chain hoist to an existing trolley or\nbridge, it\u2019s important to understand the interconnections and variants of the\nDemag model DC chain hoist you are using. Depending on the scenario and model\nyou\u2019re working with, there are specific parts you need to get the new hoist\nworking on an existing trolley or bridge. Don\u2019t get caught in the cold thinking\nyou have the right parts without reading the guide below. In this article, we\nwill go through the parts needed and some vital information so you can get the\njob done efficiently.<\/p>\n\n\n\n

Demag DC Chain Hoist Series 101<\/strong><\/p>\n\n\n\n

The Demag DC chain hoist series has two major variants based\non speed. The first type of DC has 2-speed control. Two-speed models include\nthe DC-Com, DC- Pro and DCM-Pro Manulift. These have a fast and slow lifting\nspeed with a smart contactor and relay system supplemented with programmed\nfunctions. <\/p>\n\n\n\n

The second type of chain hoist has stepless variable speed, meaning however hard you press the button is how fast or slow the load will travel, up to its maximum lift speed. Models with variable speed are the DCS-Pro and DCMS-Pro Manulift.\u00a0 Unlike the two-speed version of the hoist, the variable speed chain hoists have dedicated pendant and radio controls with buttons that create the special PWM waveforms needed for controlling the hoist.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

When you\u2019re adding any model of the DC chain hoist series to\nan existing crane or trolley set up, it\u2019s important to understand how the\nmodels interface with existing controls or any new radios and pendants. Knowing\nwhat parts you need will help you to get the job done right the first time.  <\/p>\n\n\n\n

2-Speed DC Chain Hoist Models<\/strong><\/p>\n\n\n\n

The DC-Com, DC-Pro, and DCM-Pro Manulift are all 2-speed\nmodels. These hoists are designed with a 24vac control system. It\u2019s a smart\ncontactor and relay system that is supplemented by an electronic\nprocessor-based system with programmed functions. The electronic system detects\nthe control commands triggered by the operator pressing the buttons on the\npendant. The control signals are 24vac tri-state signals, which means the\ncontrol voltage is directed through rectifiers to create half wave, full wave\nand no wave rectification. <\/p>\n\n\n\n

Adding a Demag EU 11-34 Trolley to the 2-Speed DC Chain\nHoist<\/em><\/p>\n\n\n\n

The EU trolley and DC chain hoist are designed to work together without additional modules. If pairing a DC chain hoist with a new Demag EU-trolley, the circuit boards are simply connected via a signal cable and the incoming power cable. If you are connecting the DC chain hoist and EU trolley, be sure to have the two cables with you for the install.<\/p>\n\n\n\n

Travel\nunit control cable #72007045
\nTravel Unit Supply Cable #72007245<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

It\u2019s easy to make\nthe connections. Simply remove the dummy plug with the single wire jumper from\nthe socket on the back side of the hoist control board. We highly recommend\nkeeping this dummy plug for future troubleshooting because the hoist requires\nit to be present to run independently. When you\u2019re adding a trolley to a\n2-speed Demag chain hoist, you\u2019ll also need to purchase a new pendant. If you\nhave been using the hoist without a trolley, there is not enough buttons on\nyour existing pendant control. You\u2019ll need to make sure to purchase controls\nwith an extra set of buttons so you can add trolley control. Don\u2019t forget, make\nsure the pendant or radio you choose has the ability to work with the hoist. <\/p>\n\n\n\n

Adding a 2-Speed DC Chain Hoist to an existing bridge and\/or\ntrolley with an existing control pendant<\/em><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

When you are mounting a Demag DC-Com or DC-Pro to an\nexisting bridge or trolley with an existing control pendant, it is likely the existing\nequipment has 110vac conventional control. The DC chain hoist you are adding requires\n24vac tristate signals. With the pre-existing pendant control running on\n110vac, you will need to convert signals with a KT3 conversion module. This\nmodule converts the 110vac to the 24vac tri-state control signals required to\nrun the hoist.<\/p>\n\n\n\n

Adding a 2-Speed DC Chain Hoist and EU 11-34 Trolley to\nan existing bridge with an existing control pendant<\/em><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

When pairing the DC chain hoist with a new Demag EU-trolley,\nthe circuit boards are simply connected with a signal cable and the incoming\npower cable. The KT3 conversion module is capable of controlling the EU trolley\nalong with the DC 2-speed chain hoist.<\/p>\n\n\n\n

Adding a 2-Speed DC Chain Hoist and EU Trolley to an\nexisting bridge using the new control pendant at the chain hoist.<\/em><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Adding a Demag DC-Com or DC-Pro chain hoist along with an EU\ntrolley to an existing bridge with a new control pendant connected at the chain\nhoist will provide 24vac tri-state control signals originating from the hoist.\nThe 24vac tri-state signals will need to be converted to 110vac in order to control\nthe pre-existing bridge. The module that converts the 24vac tri-state signals\nto 110vac conventional signals for the old bridge is the 3TK module. The 3TK\ncan also control a pre-existing 110vac trolley if you\u2019re not using the Demag EU\ntrolley.<\/p>\n\n\n\n

Adding a Radio System to a 2-Speed DC Chain Hoist<\/em><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

If you select a Demag brand radio system, the receiver\nsimply plugs in where the pendant would normally attach. Generally speaking,\nmost popular radios can be readily used with a Demag 2-speed chain hoist. You\njust need to use the Demag Radio Interface. Many customers choose to use a\nFlex4EX2 or Flex6EX2 radio system. These work well for the 2-speed application,\nbut does not provide the PWM signals required for the variable speed DCS\nchain hoist.<\/p>\n\n\n\n

Variable Speed Demag DCS Chain Hoist Models<\/strong><\/p>\n\n\n\n

Demag\nDC chain hoists with variable speed have a dedicated line of pendant\ncontrollers. To create a proportional variable speed signal, special PWM\npushbuttons are used that produce the variable waveform signal necessary\nfor creating the variable speeds of the hoist. These pendants are listed below.\n    <\/p>\n\n\n\n

  • DSC-S #77350033<\/li>
  • DSE-10CS #77335345<\/li><\/ul>\n\n\n\n

    Adding a Radio System to a DCS Variable Speed Chain Hoist<\/em><\/p>\n\n\n\n

    \"\"<\/figure><\/div>\n\n\n\n

    A Demag radio system should be used with Demag DCS variable\nspeed chain hoists to have the proper input signals for variable speed. The Demag\nDRC MP Radios can be programmed for use with either 2-speed or variable speed\napplications. If you connect a non-Demag brand radio through a radio interface\nto a DCS chain hoist, the variable speed nature of the chain hoist is lost and\nonly two speeds are provided.<\/p>\n\n\n\n

    When adding a new Demag DC series chain hoist to an existing\nbridge and trolley, always make sure you know what type of chain hoist you are\nadding and understand the interconnections necessary to have a successful\ninstall. You have options to use different pendants and radios when using a\n2-speed chain hoist. Even better, when connecting a Demag chain hoist and EU\ntrolley, the system is made to work together so it\u2019s plug-and-play. Variable\nspeed always requires the use of a Demag radio or pendant to continue to use\nthe hoist with the variable speed feature. Always check to make sure you are\nordering the correct pendant for the model DC chain hoist you are working on.\nNow, you can have all the needed parts ready to get the install completed\nefficiently for your customer.<\/p>\n","protected":false},"excerpt":{"rendered":"

    When you\u2019re replacing or adding a new Demag chain hoist to an existing trolley or bridge, it\u2019s important to understand the interconnections and variants of the Demag model DC chain hoist you are using. Don\u2019t get caught in the cold thinking you have the right parts without reading our guide. In this article, we will go through the parts needed and some vital information so you can get the job done efficiently.<\/p>\n","protected":false},"author":3,"featured_media":543,"comment_status":"open","ping_status":"open","sticky":false,"template":"blog-contact-single.php","format":"standard","meta":{"_acf_changed":false,"nf_dc_page":"","footnotes":""},"categories":[8,7,46],"tags":[63,55,57,58,68,3,51],"class_list":["post-537","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hoists","category-service-training","category-technical","tag-chain-hoist","tag-dc-chain-hoist","tag-dc-com","tag-dc-pro","tag-manulift","tag-service-technician","tag-tech-tip"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/posts\/537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/comments?post=537"}],"version-history":[{"count":6,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":1002,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/posts\/537\/revisions\/1002"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/media\/543"}],"wp:attachment":[{"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/media?parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/categories?post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.demagcranes.com\/en-us\/wp-json\/wp\/v2\/tags?post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}