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Parker SSD Drives 591C (Old Type) Series - 35A Two Quadrant DC Thyristor Drive for 220V to 500V Main Supply with 220V Control circuit.
Typical Motor output - up to 15kW (20HP) at 460V DC for DC motor speed and torque control.

Keypad and analogue Tachogenerator feedback board are included.
Simple to set-up in Digital, fully-isolated Single Quadrant form.
Size 1 - 250mm Wide x 180mm Deep x 415mm High.

Terminals include:-
5 x Analogue Inputs (4 x Configurable).
2 x Analogue Outputs (2 x Configurable).
Tacho input (or internal AVF) Feedback.
5 x Digital inputs (3 x Configurable).
3 x Digital Outputs (all Configurable).
+ & - 10V for Potentiometers.

Input Current - 28.7A for Armature + up to 10A for Field.
Input Voltage - 220V to 500V 3 phase +-10% at 50/60Hz.
Input fuse - 40A - to suit input bridge at 800A²s
Use a choke in the supply at 50uH minimum.

Rated at 40C Ambient.
Ventilation space above - 100mm.  Ventilation space below - 100mm.  Ventilation space at sides - 0mm.
Heat Loss at max output - 105W.
Panel mount with screw fixings on 400 x 200mm centres.

Full part number is 591C/0350/6/3/0/1/0/00. 

Interchangeable with 591C-0350-3-3-0-1-0-00-000,  591C-0350-4-3-0-1-0-00-000,  591C-0350-5-3-0-1-0-00-000, 591C-0350-7-3-0-1-0-00-000,   591C-0350-8-3-0-1-0-00-000,  591C-0350-9-3-0-1-0-00-000, and  591C-0350-A-3-0-1-0-00-000.   591C-0350-3-4-0-1-0-00-000,  591C-0350-4-4-0-1-0-00-000,  591C-0350-5-4-0-1-0-00-000,  591C-0350-6-4-0-1-0-00-000, 591C-0350-7-4-0-1-0-00-000,   591C-0350-8-4-0-1-0-00-000,  591C-0350-9-4-0-1-0-00-000, and  591C-0350-A-4-0-1-0-00-000.  Exactly the same as Eurotherm Drives 591C part numbers.