Berger Lahr Positec Manual
WDM3-004 Replacement Recommendations Preface With the discontinuation and unavailability of the WDM3-004 family of PRODUCTS there is a direct need for product replacement recommendations. This was the reason for this product recommendation document. The recommended Schneider Electric product for replacing the Berger Lahr / SIG Positec WDM3-004 product is two of the Schneider Electric SD326DU25S2.
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It is important to realize that it will require two SD326DU25S2 drives to replace one WDM3-004. This is because the WDM3-004 is a two axis motor drive whereas the SD326 is a single axis motor drive.
Schneider Electric does not offer a two axis motor drive in a single hardware configuration. The SD326 product dimensions are different than that of the WDM3-004 so the mounting location of the SD326 drives must be considered. The current mounting location of your WDM3-004 product may not accommodate two SD326 PRODUCTS so please consider mounting issues prior to ordering any PRODUCTS! Please see the product dimensions section of this document for detailed information on the product dimension differences. Functionally two SD326DU25S2 PRODUCTS will directly replace the WDM3-004 product.
Both PRODUCTS are 3 phase stepping motor drives used in conjunction with Schneider Electric (Berger Lahr) 3 phase stepping motors. The SD326 product features the latest in design technologies and will provide years of trouble free service. Robust and durable, the SD326 product offering is the best choice for replacing the WDM3-004 product.
WDM3-004 overview There are two main types of WDM3-004 PRODUCTS. The WDM3-004.0801 is a 2.5 amp stepping motor drive designed to be used in conjunction with Schneider Electric (Berger Lahr) 3 phase LW series stepping motors rated for up to 2.5 amps. This type uses 24 volt signal inputs.
The WDM3-004.1801 is a 2.5 amp stepping motor drive designed to be used in conjunction with Schneider Electric (Berger Lahr) 3 phase LW series stepping motors rated for up to 2.5 amps. This type uses 5 volt signal inputs. Schneider Electric offers signal cables to simplify the replacement process. The section on accessory cables selection in this document will assist you in selecting the appropriate signal cables for your particular application. WDM3-004 product types with identification numbers WDM3-004.0801 Id# 3 or 4 3 phase 2.5 amp stepping motor drive for use on 115vac or 230vac. Inputs for pulse, direction and gate/enable are designed for 24 volt signal level. WDM3-004.1801 Id# 3 or 4 3 phase 2.5 amp stepping motor drive for use on 115vac or 230vac.
Berger Lahr Positec
Inputs for pulse, direction and gate/enable are designed for 5 volt signal level. Replacement cross reference WDM3-004 to SD326 For all WDM3-004 type drives use the following SD326 type Use two pieces of SD326DU25S2 ordering number SD326DU25S2 Recommended Pulse/Direction cable selectio n When replacing a WDM3-004.1801 with two SD326 drives use two of the 5 volt cables from list above based on your required length. (One cable for each SD326 drive) When replacing a WDM3-004.0801 with two SD326 drives use two of the 24 volt cables from list above based on your required length.