Eurotherm Drives DC Drive 955D8R1253A

The Eurotherm Drives 955D8R1253A is a 590 Digital Series regenerative DC drive assembly from the 590 DRV product family. The DRV format integrates the drive controller with associated power components on a common mounting plate, including an ABB Spectrum EHDB 220 solid state drive contactor rated at 600 V DC and 220 A continuous, AC supply fusing, a field regulator, and a cooling fan assembly. The nameplate identifies an input current of 174 A at 480/230 VAC, three-phase, 50/60 Hz. Armature current is rated at 205 A with an armature voltage output of 500/240 VDC. Field voltage is rated at 300/150 VDC with a field current of 10 A. Connection Diagram No. HI352346 is referenced on the nameplate. The catalog number 955D8R1253A identifies this as a regenerative (four-quadrant) unit within the 590 Digital Series, designed to control separately excited DC motors across a range of industrial applications. The 590 Digital Series platform features a 16-bit microprocessor and supports multiple speed feedback types. The ABB Spectrum contactor visible on the assembly carries a part number of EHDB 220, rated for solid state drive applications at 600 V DC, 220 A continuous. Semiconductor fusing conforming to the fuse replacement schedule on the assembly is required for proper circuit protection. The serial number field on the nameplate label is blank. Eurotherm Drives was later acquired by Parker Hannifin, and this product is also referenced in the market as a Parker SSD 590 DRV series drive.

Stock # 0226-596